Dentist Abroad
The gas with greatest solubility in blood:
1) Nitrous oxide
2) Nitrogen
3) Oxygen
4) Hydrogen
Although the solubility of nitrous oxide in blood is less than other inhalational agents its solubility is 35 limes more than nitrogen and 15 times more than oxygen
Which of the following is NOT an indication for a pulpotomy?
1) Primary teeth with carious pulpal exposure.
2) Presence of deep pits/fissure.
3) Extensive loss of tooth structure in primary molars.
4) Questionable or confirmed enamel caries.
A pulpotomy is not indicated for questionable or confirmed enamel caries.
Which of the following is the drug of choice in bupivacaine induced VT:
1) Lidocaine
2) Phenytoin
3) Digoxin
4) Quinidine
The drug of choice is bretylium but in its absence lignocaine can be used.
Slightly raised vesicles rupturing to form ulcers are a feature of
1) Rubeola
2) Rubella
3) Condyloma acuminatum
4) Chicken pox
Chicken pox presents with multiple dermal lesions characteristically with vesicles, pustules which may secondarily ulcerate
Drugs mostly cross biological membranes by
1) Passive diffusion
2) Active diffusion
3) Active transport
4) Carrier mediated transport
Passive diffusion: The movement of drug across a membrane in a manner driven solely by the concentration gradient.
What is the primary goal of behavioral management techniques in treating anxious patients in dentistry?
1) To eliminate all signs of anxiety
2) To reduce the patient's anxiety to a level where dental treatment can be performed comfortably
3) To induce sleep during the procedure
4) To replace the patient's fear with positive emotions
The main objective of behavioral management is to create a relaxed and cooperative atmosphere, making it possible to conduct the necessary dental procedures without causing undue distress.
For lower premolars, the purpose of inclining the handpiece lingually is to:
1) Avoid buccal pulp horn
2) Avoid lingual pulp horn
3) Remove unsupported enamel
4) Conserve lingual dentine
ADC Test Answer: 1
Inclining the handpiece lingually helps in avoiding the buccal pulp horn while preparing the cavity.
The biologic standard used to test the efficiency of sterilization involves the use of spores of a harmless bacillus
Which muscle protrudes the hyoid?
1) Suprahyoids
2) Infrahyoids
3) Geniohyoid
4) Stylohyoid
The hyoid bone is a U-shaped bone located in the neck, just above the larynx.
Brief explanation of the other muscles:
1) Suprahyoids: The suprahyoid muscles are a group of muscles that are situated
superior to the hyoid bone. Their primary function is to elevate the hyoid
during activities like swallowing. They include the digastric, stylohyoid, and
mylohyoid muscles. However, they do not directly protrude the hyoid.
2) Infrahyoids: The infrahyoid muscles are a group of muscles that are situated
inferior to the hyoid bone. They function to depress the hyoid bone during
activities like swallowing and speech. They include the sternohyoid, omohyoid,
thyrohyoid, and geniohyoid muscles.
4) Stylohyoid: The stylohyoid muscle is one of the infrahyoid muscles and it
originates from the styloid process of the temporal bone and inserts into the
lesser cornu and the body of the hyoid bone. Its main function is to elevate and
draw the hyoid bone backward and laterally. It does not directly protrude the
hyoid.
The geniohyoid muscle is the most specific in its action to protrude the hyoid
bone .
What is the primary ethical concern regarding informed consent in dental
tourism?
1) Cost of treatment
2) Quality of care
3) Patient autonomy and safety
4) Availability of specialists
Informed consent in dental tourism raises ethical concerns about ensuring that patients are fully informed about the risks, benefits, and continuity of care when seeking treatment abroad.
For geriatric patients with cognitive impairments, what is the best approach to
dental care?
1) Treating them without their consent
2) Involving caregivers in decision-making
3) Ignoring their concerns
4) Minimal interaction during treatment
Caregivers play a crucial role in the wellbeing of cognitively
impaired patients, and including them in treatment discussions ensures better
understanding and compliance.
Diabetic insipidus is due to the lack of 1 Insulin 2 Angiotensin. 3 Aldosterone. 4 A.D.H.
Physiology Answer: 4Diabetic insipidus is due to the lack of ADH
What is the most common site for oral cancer?
1) Hard palate
2) Lateral borders of the tongue
3) Lower lip
4) Buccal mucosa
The lower lip is the most frequently affected site for oral cancer, while the lateral borders of the tongue are also common sites within the oral cavity.
What is the primary purpose of a dental sealant?
1) To improve aesthetics
2) To prevent tooth decay
3) To strengthen enamel
4) To whiten teeth
Dental sealants are primarily used to prevent tooth decay by sealing the grooves and pits on the chewing surfaces of teeth, making them less susceptible to plaque accumulation.
Which of the following is an indication for a pulpotomy on a primary tooth?
1) Radiographic evidence of internal root resorption.
2) Involvement of interradicular bone with no fistula
3) Involvement of interradicular bone with a fistula
4) Signs and symptoms of reversible pulpitis.
Pulpotomy is indicated when inflammation is limited to the coronal pulp, preserving vitality of the radicular pulp.
What type of discharge is typically associated with vesiculobullous lesions?
1) Purulent
2) Bloody
3) Serous
4) Foul-smelling
Vesiculobullous lesions often present with a serous discharge, which is a clear, yellowish fluid resulting from the inflammatory response.
A picture of the tongue with an ulcer on the lateral border. What drug causes it?
1) ACE inhibitors
2) Calcium channel blockers
3) Potassium-sparing drugs
4) NSAIDs
ACE inhibitors can cause oral side effects, including ulcers on the tongue and other mucosal surfaces.
What is the relationship between the acidity of the mouth and the
progression of dental caries?
1) No relationship
2) Low acidity prevents caries
3) High acidity promotes caries
4) High acidity reverses caries
A pH below the critical level leads to demineralization and the progression of dental caries.
Which immunoglobulin is dimeric?
1) IgG
2) IgM
3) IgA
4) IgE
Secretory IgA is a dimeric form of immunoglobulin that plays a key role in mucosal immunity.
The tonsillar lymph node is situated at the level of:
1) Angle of the mandible
2) C6 vertebrae
3) Jugulodigastric crossing
4) Clavicle
ADC Test Answer: 1
The tonsillar lymph node, also known as the jugulodigastric node, is located near the angle of the mandible, making it significant in evaluating head and neck pathologies.
Local anesthetic which produces localized vasoconstriction and anesthesia?
1) Cocaine
2) Tetracaine (pontocaine)
3) Lidocaine (Xylocaine)
4) Prilocaine (Citanest)
Cocaine is a local anesthetic that produces localized vasoconstriction and anesthesia.
Ability of an orthodontic wire to spring back to Its original shape is evaluated by
1) Brittleness
2) Resilience
3) Tensile strength
4) Toughness
Resilience is the amount of energy absorbed by a structure when it is stressed to proportional Limit.
The elastic area of the stress-strain graph gives resilience; entire area up to breaking point is a measure of toughness.
The slope of straight Line gives Young’s modulus.
Central neuraxial anesthesia is not contra indicated in:
1) Patient on Aspirin
2) Patient on oral anticoagulant
3) Platelet count <80,000
4) Pt on LV heparin
Local Anesthesia Answer: 3
Platelet Count <80,000 Absolute Contraindication a.
b. Patient refusal.
c. Severe hypovolemia (shock)
d. Patient on anticoagulants
e. Patient on thrombolytic/ fibrinolytic therapy
f. Bleeding disorders/ coagulopathy.
g. Septicemia and bacteremia.
h. Infection at local site.
Relative Contraindications
a. Fixed cardiac output lesions
b. Mild to Moderate Hypotension and Hypovolemia
c. Severe ischemic heart disease.
d. Heart block and patient on ?-Blockers.
e. Patient on Aspirin
f. Patient on minidose heparin subcutaneously.
g. Psychiatric disorders.
What is the most common complication associated with local anesthesia in the
elderly?
1) Dizziness and lightheadedness
2) Inadvertent intravascular injection
3) Increased risk of infection
4) Prolonged numbness
Due to altered pharmacokinetics, elderly patients may experience prolonged anesthesia and delayed recovery of normal sensation.
What suture material is used on lips?
1) Prolene
2) Nylon
3) Vicryl
4) Both 1 and 2
Prolene and nylon are both commonly used suture materials for lip closures due to their strength and minimal tissue reaction.
Which of the following is NOT a component of a comprehensive dental record?
1) Patient medical and dental history
2) Clinical examination findings
3) Treatment plans and consent forms
4) Social security number of the patient's next of kin
E. Financial information
While it's essential to have emergency contact information, including the next of kin, a social security number is not typically considered a necessary part of a comprehensive dental record. The primary components of a comprehensive dental record include the patient's personal and medical/dental history, clinical examination findings, diagnoses, treatment plans, consent forms, and radiographs/images.
Can a patient withdraw their informed consent at any time?
1) No, once given, consent cannot be withdrawn
2) Yes, but only if the treatment has not yet started
3) Yes, at any point during the treatment
4) Only if the patient has not signed a consent form
A patient has the right to withdraw informed consent at any time
during the treatment process, regardless of whether they have signed a consent
form or not.
A patient presents with a history of using an old diamond bur. What consequence might arise from this?
A. Faster cutting
B. Excessive heat generation
C. Reduced pain during procedures
D. Improved tooth surface finish
Using an old diamond bur can lead to inadequate cutting efficiency, forcing the dentist to apply excessive pressure which generates excessive heat—this can damage the dental pulp.
Apicoectomy is CONTRAINDICATED when
1) periodontal disease causes inadequate bony support.
2) there is a granuloma at the apex of the tooth.
3) more than one tooth is involved
4) the cortical plate is more than 4mm thick.
An apicoectomy is contraindicated in situations where the periodontal support is compromised:
- Periodontal disease causes inadequate bony support: If the tooth has significant periodontal disease leading to loss of supporting bone, the prognosis for the tooth after an apicoectomy is poor. The lack of adequate bony support can lead to tooth mobility and failure of the procedure.
- Granuloma at the apex: This is not a contraindication; in fact, granulomas are often the reason for performing an apicoectomy.
- More than one tooth involved: This is not a direct contraindication; it depends on the specific situation of each tooth.
- Cortical plate thickness: The thickness of the cortical plate is not a standard contraindication for apicoectomy.
- Diabetes: While diabetes can complicate healing, it is not an absolute contraindication for the procedure.
What is the best approach to ensure the cooperation of a patient with autism spectrum disorder during dental treatment?
1) Sticking strictly to a predefined treatment schedule
2) Providing a structured and predictable environment
3) Using bright, flashing lights in the operatory
4) Asking the patient to hold their mouth open without support
Patients with autism may benefit from a structured environment with minimal sensory stimulation.
Heat hardening is done in which orthodontic wire
1) Elgiloy
2) Stainless steel
3) TMA
4) NiTi
SOLUTION Elgiloy (Cobalt-Chromium) alloy is supplied in a softer state and can be heat hardened.
After hardening heat treatment, the softest elgiloy becomes equivalent to regular stainless steel.
In patients with disseminated intravascular coagulation (DIC), which laboratory finding is typically present?
1) Hypofibrinogenemia
2) High platelet count
3) Decreased D-dimer levels
4) Prolonged PT/APTT
In DIC, both prothrombin time (PT) and activated partial thromboplastin time (APTT) are usually prolonged due to extensive clotting factor consumption.
Which tooth is most commonly associated with dental impaction?
1) Maxillary canine
2) Mandibular first molar
3) Mandibular third molar
4) Maxillary central incisor
The mandibular third molar (wisdom tooth) is the most frequently impacted tooth due to limited space in the dental arch.
Which of the following restorations is the most appropriate for the replacement
of a maxillary permanent lateral incisor where there is 4.5mm of mesial-distal
space and an intact central incisor?
1) Implant supported restoration.
2) Cantilever pontic FPD using canine abutment.
3) Removable partial denture.
4) Three-unit metal-ceramic full coverage fixed dental prosthesis.
Cantilevered fixed partial dentures can be more successful in anterior quadrant than posterior because the forces are less in anterior region than posterior one. The cantilevered FPD requires at least two abutment teeth.
Three types of expansion that are possible in an investment are 1. thermal expansion, hygroscopic expansion, and setting expansion 2. thermal expansion, casting expansion, and metal expansion 3. casting expansion, hygroscopic expansion, and thermal expansion 4. thermal expansion, hygroscopic expansion, and metal expansion
Dental Material Answer: 1Types of expansion that are possible in an investment are thermal expansion, hygroscopic expansion, and setting expansion
Which material is commonly used for direct pulp capping?
1) Glass ionomer
2) Composite resin
3) Calcium hydroxide
4) Amalgam
Calcium hydroxide is commonly used for direct pulp capping due to its ability to promote healing and dentin formation.
What is the correct order for removing personal protective equipment (PPE)
at the end of a procedure?
1) Face shield, gown, mask, gloves
2) Gloves, mask, gown, face shield
3) Gown, face shield, mask, gloves
4) Mask, gloves, gown, face shield
The correct order for removing PPE is to first remove the gloves, then the mask, followed by the gown, and finally the face shiel4) This order helps to prevent contamination of the skin and mucous membranes during the removal process.
Lidocaine (Xylocaine) effect on ventilation response to hypoxia?
1) Enhanced response
2) Depressed response
3) No effect
4) Enhanced response and no effect
Lidocaine, also known as Xylocaine, has been found to have a depressant effect on the ventilation response to hypoxia.
During an inferior alveolar nerve block, the needle ideally passes?
1) Through medial pterygoid
2) Anterior and lateral to medial pterygoid
3) Posterior and medial to medial pterygoid
4) Inferior to medial pterygoid.
During an inferior alveolar nerve block, the needle ideally passes anterior and lateral to the medial pterygoid muscle.
Where is bone lost most in periodontal disease?
1) Buccal surface
2) Lingual surface
3) Interdental (approximal) areas
4) Palatal surface
Bone loss in periodontal disease is most pronounced in the interdental areas, where plaque accumulation and inflammation are often greatest.
The most appropriate gingival contour of a fixed partial denture connector is
1) concave.
2) convex.
3) flat.
4) none
A convex contour ensures proper hygiene by reducing plaque accumulation and
facilitates better gingival health.
Concave contours can trap debris and promote inflammation.
The muscle assisting in mastication but not supplied by mandibular nerve is tensor veli palatine
What is the primary feature of trigeminal neuralgia?
1) Constant dull pain
2) Intermittent sharp pain triggered by stimuli
3) Pain that worsens at night
4) Pain associated with swelling
Trigeminal neuralgia is characterized by sudden, severe, and sharp facial pain that can be triggered by light touch or other stimuli.
The oral lesion of warty dsykeratoma is described as a small whitish area of the mucosa with a central depression
After crown placement, when should a follow-up radiograph be taken?
1) Within 1 month
2) After 6 months
3) Annually
4) Every 2 years
Annual follow-up radiographs are necessary to monitor the health of the crown and surrounding structures.
Which of the following acids is commonly used for etching enamel surfaces? 1. Citric acid 2. Hydrochloric acid 3. Phosphoric acid 4. Picric acid
Dental Material Answer: 3Phosphoric acid is used for etching enamel
How should a patient's refusal of treatment be documented in the dental record?
- In a separate, sealed envelope
- In the treatment plan section with a notation of refusal
- In the financial section of the record
- It does not need to be documented
Refusal of treatment should be clearly documented in the patient's medical record to ensure that all parties are aware of the decision.
What is the most common site for oral cancer within the mouth?
1) Hard palate
2) L ateral borders of the tongue
3) Floor of the mouth
4) Buccal mucosa
The lateral borders of the tongue are the most frequently affected site for oral cancer, particularly in the context of squamous cell carcinoma.
The reaction used for estimating free amino, groups in proteins is: 1. Ninhydrin test 2. Deamination with HNO2 3. Biuret test 4. Formol titration
Biochemistry Answer: 2The reaction used for estimating free amino, groups in proteins is Deamination with HNO2
Which antihypertensive agent is a direct renin inhibitor?
1) Aliskiren
2) Ramipril
3) Valsartan
4) Verapamil
Aliskiren directly inhibits renin, reducing the production of angiotensin I and lowering blood pressure.
The most common cause of failure in root canal treatment is:
1) Over-filling the canal
2) Under-filling the canal
3) Instrument breakage
4) Infection during treatment
ADC Test Answer: 2
Inadequate filling of the root canal system allows for persistent infection, making it the leading cause of failure in root canal procedures.
Which of the following is the most commonly associated benign parotid gland tumor?
1) Mucoepidermoid carcinoma
2) Pleomorphic adenoma
3) Adenocystic carcinoma
4) Acinic cell carcinoma
Pleomorphic adenoma, also known as a benign mixed tumor, is the most common type of parotid gland tumor and represents around 75% of all cases.
What is the most effective preventive care for dental caries in geriatric
patients?
1) Daily flossing
2) Professional cleanings every six months
3) Fluoride applications
4) Routine radiographs
Frequent fluoride applications can strengthen enamel and reduce
caries incidence, especially in those with reduced salivary flow.
In mixed dentition, which of the following may be considered as a self correcting problem with age?
1) Unilateral loss of primary canine
2) Lack of interdental spaces
3) A distal step
4) Open bite
SOLUTION The possibility that a distal step would become class II is very real, and this not self correcting problem.
Normal child will go through a transitory stage of mandibular incisor crowding at age 8 to 9 even if there will eventually be enough room to accommodate all the permanent teeth in good alignment. In other words, a period when the mandibular incisors are slightly crowded is a normal developmental stage.
Continued development of the arches improves the spacing situation, and by the time the canine teeth erupt, space is once again adequate.
How many grams of high-density noble metal alloy is required for casting of a molar?
1) 3 gms
2) 6 gms
3) 9 gms
4) 12 gms
With high-density noble metal alloy 6 grams is adequate for premolar and anterior castings, 9 grams is adequate for molar casting and 12 grams is adequate for pontics.
Which diuretic class is most commonly used as first-line therapy in hypertension?
1) Loop diuretics
2) Thiazide diuretics
3) Potassium-sparing diuretics
4) Aldosterone antagonists
Thiazide diuretics are often the first-line choice in managing hypertension because of their efficacy and fewer side effects.
Which of the following statements about informed consent is true?
1) It is
only necessary for surgical procedures.
2) It must always be documented in writing.
3) It is a one-time process that does not require updates.
4) It should be tailored to the individual patient's needs and understanding.
;Informed consent should be personalized to ensure that the patient fully understands the information relevant to their treatment.
Which type of radiograph is particularly useful for evaluating the temporomandibular joint (TMJ)?
1) Panoramic radiograph
2) Periapical radiograph
3) Occlusal radiograph
4) Cone beam computed tomography (CBCT)
CBCT provides detailed 3D images of the TMJ, allowing for accurate assessment of its structure and potential pathology.
Which of the following is NOT a method for sterilizing dental instruments?
1) Autoclaving
2) Dry heat
3) Chemical vapor sterilization
4) Microwave sterilization
Microwave ovens are not designed for sterilization purposes and can
cause uneven heating and potential damage to instruments. Autoclaving, dry heat,
and chemical vapor sterilization are all valid methods for sterilizing dental
instruments.
The ideal treatment for a tooth (75) with caries touching the pulp horn at age 7 is:
1) Indirect pulp capping and steel crown
2) Pulpotomy and steel crown
3) Pulpectomy and steel crown
4) Extraction and space maintainer
ADC Test Answer: 2
At this age, a pulpotomy (removal of the coronal pulp) is appropriate as it preserves the remaining vital tissue while addressing caries.
Not a physical property of propofol:
- Water based preparation
- Colour of the solution is white
- It contains egg lecithin
- Used as 2% strength
Propofol is oil based preparation containing soybean oil, egg lecithin and glycerol.
What is the recommended fluoride concentration for community water fluoridation?
1) 0.5 ppm
2) 1.0 ppm
3) 1.5 ppm
4) 2.0 ppm
The recommended fluoride concentration for community water fluoridation is 1.0 ppm, which is effective in reducing dental caries.
The growth of the alveolar process has a major effect on
1) Anteroposterior jaw relationship
2) Vertical jaw relationship
3) Both
4) None of the above
The DMF index is commonly used to measure:
1) Oral hygiene
2) Dental radiograph efficacy
3) Prevalence and severity of dental caries
4) Tooth mobility
The Decayed, Missing, and Filled teeth (DMF) index is a standard epidemiological tool to assess the burden of dental caries in populations.
A patient experiences pain after an extraction. Which analgesic should be used?
1) Acetaminophen
2) NSAID
3) Opioid
4) Aspirin
Non-steroidal anti-inflammatory drugs (NSAIDs) are effective for managing pain and inflammation following dental extractions.
Clinical use(s) of EMLA applications:?
1) Myringotomy
2) Arterial cannulation
3) Venipuncture
4) Lumbar puncture
EMLA applications are used in clinical settings for various procedures.
What is a potential use of dental records in forensic dentistry?
1) To determine the patient's insurance coverage
2) To identify a dead or missing person
3) To track treatment costs
4) To evaluate staff performance
Dental records can provide antemortem information that assists forensic odontologists in identifying deceased individuals.
Which of the following new technologies uses light to detect dental caries?
1) Digital Imaging Fibre-Optic Transillumination (DIFOTI)
2) Laser fluorescence (DIAGNOdent)
3) Quantitative Light-Induced Fluorescence (QLF)
4) All of the above
DIFOTI, DIAGNOdent, and QLF are all new technologies that utilize light to detect dental caries. They work by identifying changes in light transmission or fluorescence caused by the presence of carious lesions.
When treating a patient with Down syndrome, which of the following is NOT a common oral health concern?
1) Increased risk of periodontal disease
2) Delayed tooth eruption
3) Large tongue size
4) High prevalence of dental caries
While individuals with Down syndrome may face challenges such as increased risk of periodontal disease and delayed tooth eruption, and often have a higher prevalence of dental caries, tongue size is generally not a concern specific to this condition.
Which is a commonly used medication for managing dental anxiety?
1) Antibiotics
2) Benzodiazepines
3) Analgesics
4) Antidepressants
Benzodiazepines are often prescribed for their anxiolytic effects, helping to alleviate anxiety in dental patients.
The gold casting alloy indicated for use in dental bridges is:
1) Type I
2) Type II
3) Type III
4) Type IV
ADC Test Answer: 4
Type IV gold casting alloys are suitable for use in bridges as they offer adequate strength and resistance to wear.
How often should dental records be updated?
- Annually
- With each appointment
- Only when there is a change in treatment plan
- It depends on the patient's dental insurance
Dental records should be updated at every appointment to reflect the most current information regarding the patient's oral health and treatments.
Increasing the powder to liquid ratio in a zinc phosphate cement will 1. increase the setting time and increase the strength 2. increase the setting time and decrease the strength 3. decrease the set time and increase the strength 4. decrease the setting time and decrease the strength
Dental Material Answer: 3Increasing the powder to liquid ratio in a zinc phosphate cement will decrease the set time and increase the strength
What suture material is used on lips?
1) Prolene
2) Nylon
3) Vicryl
4) Both 1 and 2
Prolene and nylon are both commonly used suture materials for lip closures due to their strength and minimal tissue reaction.
What is the minimum recommended level of surface barrier protection for
dental chair surfaces?
1) High-level disinfection
2) Intermediate-level disinfection
3) Low-level disinfection
4) No specific level is required
Intermediate-level disinfection is recommended for non-critical, semi-critical surfaces like dental chair surfaces, which come into contact with intact skin or mucous membranes but not with blood, body fluids, or other potentially infectious materials.
Which one of the following is the initial treatment for internal resorption?
1) Pulpectomy.
2) Pulpotomy.
3) Pulp capping.
4) Apicoectomy.
The initial treatment for internal resorption is typically a pulpectomy, which involves the complete removal of the pulp tissue. This procedure is necessary to halt the resorptive process and to allow for the potential healing of the tooth. A pulpotomy may be considered in some cases, but a pulpectomy is more definitive for internal resorption.
Maximum decrease in cardiac output is caused by:
1) Enflurane
2) Halothane
3) Sevoflurane
4) Methoxyflurane
Cardiac output is maximally decreased by enflurane followed by halothane.
Elgiloy arch wire is a 1. Cobalt chromium nickel alloy 2. Gold alloy 3. Optical fiber arch wire 4. Beta titanium arch wire
Dental Material Answer: 1Elgiloy arch wire is a Cobalt chromium nickel alloy
What is the strength of adrenaline typically used in dental anesthesia?
1) 1:100
2) 1:1000
3) 1:2000
4) 1:5000
The standard concentration of adrenaline used in dental procedures is 1:1000, which helps to control bleeding and prolong the effect of local anesthetics.
When were the RIDDOR regulations established?
1) 1990
2) 1995
3) 2000
4) 2005
The Reporting of Injuries, Diseases and Dangerous Occurrences Regulations (RIDDOR) were enacted in 1995 to ensure that employers report specific workplace incidents to improve safety.
A mandibular primate space is usually found in the primary dentition between 1. first and second molars 2. central and lateral incisors 3. lateral incisor and canine 4. canine and first molar
Dental Anatomy Answer: 4A mandibular primate space is usually found in the primary dentition between canine and first molar
What is the recommended maximum safe dosage of epinephrine for geriatric
patients with cardiovascular diseases?
1) 0.04 mg
2) 0.2 mg
3) 0.1 mg
4) 0.5 mg
It's typically recommended to limit the total dose of
epinephrine to 0.04 mg due to the risk of cardiovascular events in older
patients.
A child with autism may exhibit:
1) Repetitive actions and sensitivity to light and noise
2) Social withdrawal and lack of eye contact
3) High intelligence and advanced verbal skills
4) All of the above
Autism spectrum disorder (AS4) is characterized by a range of behaviors, including repetitive actions such as hand-flapping or rocking, and sensory sensitivities like being overly sensitive to light and noise. While children with ASD can have varying levels of intelligence and verbal skills, the core features of the disorder are the presence of repetitive behaviors and sensory issues, which are crucial for diagnosis and understanding the condition's impact on daily functioning.
What is the primary advantage of computerized dental records in terms of patient care?
- Enhanced data security
- Improved legibility and reduced errors
- Reduced waiting times for appointments
- Increased marketing opportunities
Digital records can enhance patient care by reducing errors associated with handwritten notes and improving legibility, which facilitates better communication among dental professionals and safer treatment planning.
The diagnosis for a patient having a sinus tract associated with a nonvital pulp
who presents with no symptoms is
1) acute apical abscess (acute periradicular abscess).
2) asymptomatic apical periodontitis (chronic periradicular periodontitis).
3) periodontal abscess.
4) chronic apical abcess (chronic periradicular abscess).
Chronic apical abscesses typically present with sinus tracts and minimal symptoms
What type of reaction does an amalgam restoration cause?
1) Type I hypersensitivity
2) Type II hypersensitivity
3) Type IV hypersensitivity
4) Anaphylactic reaction
Amalgam restorations can lead to type IV hypersensitivity reactions, which are delayed and mediated by T lymphocytes rather than antibodies.
Nickel is a common alloying element that significantly increases the ductility of base metals, such as iron and steel.
Best clinical sign for adequate reversal is:
1) Spontaneous eye opening
2) Spontaneous limb movements
3) Able to protrude tongue
4) Able to lift head > 5 seconds
If patient is able to lift the head > 5 seconds it is considered the best clinical sign as it corresponds to train of four ratio > 0.7.
What is the primary legal obligation related to dental records?
- To store them for a minimum of five years
- To provide them to the patient upon request
- To destroy them after treatment is completed
- To never disclose them without the patient's consent
Dentists are legally required to provide patients with a copy of their dental records when requested.
A successful infraorbital nerve block will produce anaesthesia of the?
1) Maxillary anterior teeth.
2) Maxillary anterior teeth, their labial gingivae and the upper lip
3) Maxillary anterior teeth and their labial gingivae.
4) Maxillary anterior teeth, their labial gingivae, the upper lip and anterior hard palate
A successful infraorbital nerve block will produce anesthesia of the maxillary anterior teeth, their labial gingivae, and the upper lip.
The most likely reason for porcelain fracturing off a long and narrow metal-ceramic fixed partial denture is that the framework alloy had an insufficient:
1) Elastic modulus.
2) Proportional limit.
3) Fracture toughness.
4) Tensile strength.
FPD and RPD Answer: 1
Explanation: An insufficient elastic modulus means the framework cannot adequately resist deformation, leading to stress
and eventual fracture of the porcelain.
Which behavior should a dentist encourage to help reduce anxiety in patients?
1) Withholding information about the procedure
2) Encouraging patients to express their fears
3) Telling jokes unrelated to the procedure
4) Dismissing the patient's concerns as minor
Allowing patients to voice their concerns creates a supportive environment and can help alleviate anxiety.
A wax pattern made in the mouth will shrink appreciably as it is cooled to room temperature because :
1) The thermal expansion coefficient of wax is very high
2) The thermal expansion coefficient of wax is very low
3) Melting temperature is very high
4) Melting temperature is very low
A wax pattern made in the mouth will shrink appreciably as it is cooled to room temperature because the coefficient of thermal expansion of wax is very high.(This is the property which describes the thermal energy transport in watts per second through a specimen 1cm thick with a cross sectional area of 1 cm2 when the temperature differential between the surfaces of the specimen perpendicular to the heat flow 10 K) Co efficient of thermal expansion is defined as the change in length per unit of the original length of a material when its temperature is raised 10K.
Bitewing radiography is the main special test used to help in the diagnosis of proximal caries. What is a reasonable summary of the diagnostic accuracy of bitewing radiography for proximal caries diagnosis?
1) Moderate sensitivity and low specificity
2) Moderate sensitivity and moderate specificity
3) High sensitivity and high specificity
4) High sensitivity and moderate specificity
Bitewing radiography is known for its high sensitivity and specificity in detecting proximal caries, making it a valuable diagnostic tool.
The essential ingredient of dental inlay investment are :
1) Quartz, cristobalite
2) β hemihydrate
3) α hemihydrate
4) Ammonium phosphate
The essential ingredients of the dental inlay investment employed with the conventional gold casting alloys are a-hemihydrate of gypsum, quartz, or cristobalite, which are allotropic forms of silica.
Before restoring a tooth with composite, the area is etched. Accidental contamination occurs with saliva, Therefore
1) the area is re-etched before restoration
2) the area is air-dried using an air spray and continue with restoring
3) wipe the saliva with cotton and continue to restore.
4) add excess composie material and cure it
Etching of tooth surface with 37% phosphoric acid creates microporosities in the enamel and dentin.
After etching the surface energy of the enamel will increase. This will make it very sticky to any kind of contaminants. If salivary contamination will occur, the salivary proteins will precipitate in the microporosities. This will prevent the adequate penetration of the bonding agent, therby reducing the micotag formation. Hence, complete isolation is essential.
Angular cheilitis is most commonly associated with which condition in complete denture wearers?
A. Candidiasis
B. Nutritional deficiencies
C. Overextended flanges
D. Incorrect occlusion
Angular cheilitis, which appears as fissures or sores at the corners of the mouth, is often caused by overextended denture flanges that create friction and moisture retention, leading to secondary infections.
What is the primary study design to evaluate tetracycline as an adjunct to scaling and root planing for chronic periodontitis?
1) Cohort
2) Non-randomised controlled trial
3) Randomised controlled trial
4) Case-control
A randomized controlled trial (RCT) is the ideal design to assess the effectiveness of a treatment by removing bias and allowing for controlled comparisons.
Firm contact between approximating teeth is important because it
1) locates the marginal ridges of each tooth.
2) keeps the teeth from having any movement during function.
3) insures proper cusp form and increases masticatory efficiency.
4) stabilizes the dental arches and gives protection to the gingival papillae.
Firm contact between teeth helps maintain the stability of the dental arches, preventing unwanted movement during function. This contact also protects the gingival papillae by ensuring that the teeth are properly aligned and that the forces of mastication are distributed evenly, reducing the risk of periodontal issues.
Which of the following factors most significantly influences the oral health
of the geriatric population?
1) Socioeconomic status
2) Age
3) Gender
4) Location
Socioeconomic status can impact access to dental care, education about oral health, and the ability to afford dental treatments, influencing the overall oral health of elderly individuals.
What is the significance of the pH buffering capacity of saliva in
preventing dental caries?
1) It does not affect caries formation
2) It prevents the formation of lactic acid
3) It helps to maintain a pH above the critical threshold for demineralization
4) It promotes the formation of enamel
Saliva's buffering capacity helps to counteract the acidity produced by bacterial fermentation of sugars, maintaining a pH above the critical threshold and preventing demineralization.
What is the first line of treatment for a patient with a lower lateral tooth extracted while the alveolus heals to cover the gap?
1) Conventional cantilever
2) Partial denture
A partial denture is often the preferred option to replace missing teeth during the healing process, providing functional and aesthetic support.
Which investigation is most commonly used to rule out aspiration in mandibular fracture patients with missing teeth? 1) Chest X-ray 2) Orthopantomogram 3) PA mandible 4) CT scan
Oral and Maxillofacial Surgery Answer: 1A chest X-ray is commonly performed when missing teeth or denture fragments cannot be accounted for in a mandibular fracture patient. This helps to rule out aspiration of foreign bodies.
What is the purpose of using a biosafety cabinet during dental procedures?
1) To protect the patient from infection
2) To protect the dental staff from infection
3) To protect the environment from infection
4) To protect the instruments from contamination
A biosafety cabinet is used in the dental setting to protect the dental staff from infection by minimizing exposure to aerosols and splatter generated during procedures. It does not directly protect the patient or the environment but is part of a larger infection control strategy.
In a visual examination for caries, what change in the tooth surface texture
or color is a reversible sign of early enamel demineralization?
1) White spot
2) Brown spot
3) Black spot
4) Red spot
A white spot on the tooth surface indicates incipient caries, which is a reversible form of enamel demineralization. Brown or black spots are typically associated with more advanced stages of caries, while red spots are not a common sign of dental caries.
Which of the following is true about the supraeruption of unopposed molars?
1) Supraeruption occurs 60% of the time.
2) Supraeruption is more prevalent in the mandibular arch.
3) Unopposed molars have a mean supraeruption of 3.0mm.
4) Attachment loss is one of the main predictors.
Attachment loss reduces periodontal stability, making it a significant factor in
the supraeruption of unopposed teeth.
For which of the following is a written consent form NOT typically required?
1) Routine dental fillings
2) Dental radiographs
3) Surgical extraction of a tooth
4) Dental photography for educational purposes
Although the use of radiographs involves some risk, they are
considered part of the diagnostic process and do not typically require written
consent unless the patient specifically refuses them.
Only pure hinge movementsof the mandible occur at
1) centric occlusion
2) centric relation
3) lateral exursion
4) terminal hinge position
The functional movements of the mandible are combinations of hinge and glide movements. Within vertical limits, the mandible may make a pure hinge movement without a simultaneous glide. The one relation of the condyle to the fossae in which this pure hinge movement is possible is called terminal hinge position
Which of the following is used to decrease the toxicity of amphotericin B?
1) Dose reduction
2) Liposomal delivery systems
3) Supplementing glucose
4) Giving it along with flucytosine
Liposomal delivery systems decrease the amount of free drug in the blood Infected cells interact with the liposomes, resulting in the release of amphotericin B at the site of action.
What are the benefits of using computerized patient records?
- Improved access and data retrieval
- Reduced cost and errors
- Enhanced outcomes management and decision support
- All of the above
Electronic patient records offer benefits such as improved access, reduced cost and errors, and better outcomes management and decision support.
A dentist is using a Sof-Lex disc on an upper molar and lacks finger support. What is most likely to occur?
1) Gingival trauma
2) Mucosal burn
3) Mucosal trauma
4) Trauma to adjacent tooth
5) Gingival laceration
Lack of finger support while using a Sof-Lex disc can lead to improper control, resulting in potential trauma to the gingiva.
Which type of therapy is particularly beneficial for patients with significant intellectual disabilities when it comes to dental care?
1) Cognitive-behavioral therapy
2) Music therapy
3) Behavior modification therapy
4) Art therapy
Behavior modification therapy can help in training patients to accept dental treatment by providing positive reinforcement for cooperative behavior.
The angle of convexity
1) SNA
2) NAPog.
3) ANB
4) SNB
SOLUTION Angle of Convexity The angle of convexity is formed by the intersection of line from N to point A, to point A to pogonion.
What is the primary risk factor for the development of musculoskeletal disorders among dental professionals?
1) Prolonged periods of sitting
2) Repetitive motions
3) Working with vibrating instruments
4) Exposure to radiation
Repetitive motions, such as those involved in holding and using small hand instruments for long periods, are the primary risk factor for the development of musculoskeletal disorders among dental professionals.
What is the purpose of documenting informed consent in the dental record?
- To ensure the patient has read and understood the treatment plan
- To provide legal protection in the event of a malpractice claim
- To serve as a reminder for the dental team of the agreed-upon treatment
- To bill the patient for services provided
Documenting informed consent protects the dentist in legal matters by showing that the patient was fully informed and agreed to the proposed treatment.
Untrue about desflurane is:
1) Rapid induction and recovery
2) High vapour pressure
3) Induction is very smooth
4) Does not produce fluoride
Desflurane has a pungent odor, making induction unpleasant and potentially causing laryngospasm or bronchospasm.
Whom to contact if there is a 20% increase in radiation dose?
1) The clinic manager
2) The radiation protection advisor
3) The health and safety officer
4) The dental board
The radiation protection advisor should be contacted to assess and address any significant increases in radiation exposure.
The recommended level of fluoride in drinking water for temperate climate zones
is 1 ppm. This level is considered optimal for preventing tooth decay and
promoting dental health. It is important to maintain the right balance of
fluoride in drinking water as too little fluoride may not provide the desired
benefits, while too much fluoride can lead to dental fluorosis, a condition that
causes discoloration and damage to tooth enamel. Therefore, 1 ppm is the
recommended level to ensure the right amount of fluoride for dental health.
The function of 2% potassium sulphate in a gypsum product is
1) to regulate the setting expansion.
2) to regulate the setting time.
3) to act as a retarder.
4) none of the above.
Sodium chloride is an accelerator up to about 2% of the hemihydrates, but at a higher concentration, it acts as a retarder. Sodium sulphate has its maximum acceleration effect at approximately 3.4%; at greater concentrations, it becomes a retarder.
The most commonly used accelerator is potassium sulphate.
particles act as nuclei of crystallization.
Citrates. acetates and borates generally retard the reaction.
In a patient with thyroid surgery, the block to be given is:
1) Stellate ganglion
2) Upper cervical ganglion
3) Dorsal sympathetic ganglion
4) Any of the above
Local Anesthesia Answer: 2
Upper cervical ganglion Cervical plexus block is most commonly given for carotid endarterectomy but thyroidectomy and tracheostomy can be done under bilateral cervical plexus block.
Which of the following is a characteristic of affected dentin?
1) Bacteria-loaded and mushy
2) Requires complete removal
3) Completely cavitated
4) Dry and leathery
Affected dentin is dry and leathery, not invaded by bacteria, and does not need to be removed during restoration.
At the end of a balanced anaesthesia technique with non-depolarizing muscle relaxant, a patient recovered spontaneously from the effect of muscle relaxant without any reversal. Which of the below given is the most probable relaxant the patient received?
1) Pancuronium
2) Gallamine
3) Atracurium
4) Vecuronium
The patient must have received Atracurium, which is consistent with the description that he received a non-depolarizing muscle relaxant and recovered spontaneously from its effect without any reversal. Atracurium refers to a short-acting muscle relaxant. Non-enzymatic degradation (Hofmann elimination) inactivates it spontaneously in addition to that by cholinesterase. Therefore, reversal is usually not required when it is used.
What is the most common histological finding in pemphigus vulgaris?
1) Acanthosis
2) Acantholysis
3) Hyperkeratosis
4) Basal cell carcinoma
Acantholysis is the primary histological feature of pemphigus vulgaris, leading to the formation of intraepithelial vesicles.
In the mandible, the main growth site is in the:
1) Gonial angle.
2) Condylar cartilage.
3) Posterior border of the ramus.
4) Inferior and lateral aspects of the body of the mandible.
Orthodontics Answer: 2Excessive overjet is a hallmark of Angle Class II occlusion due to mandibular retrusion or maxillary protrusion, leading to an increased horizontal distance between the arches.
What concentration of sodium fluoride toothpaste is prescribed for patients aged 10 years and over with high caries risk?
1) 1,000 ppm
2) 2,800 ppm
3) 5,000 ppm
4) 10,000 ppm
Sodium fluoride toothpaste with 2,800 ppm is recommended for patients aged 10 years and above who have a high risk of caries.
Which antibiotic causes abdominal cramps in therapeutic doses?
1) Amoxicillin
2) Clindamycin
3) Metronidazole
4) Tetracycline
Clindamycin is known to cause gastrointestinal side effects, including abdominal cramps, even at therapeutic doses.
What is the primary mechanism by which fluoride helps prevent dental caries?
1) It acts as an antibiotic.
2) It increases the pH of saliva.
3) It inhibits the demineralization of enamel.
4) It promotes remineralization of enamel.
ADC Test Answer: 3
Fluoride forms a protective layer on the tooth enamel that inhibits the activity of bacterial enzymes responsible for demineralization, thereby preventing dental caries.
The secretory product of odontoblasts is:
1) Topocollagen.
2) Calcium salts.
3) Mantle dentin.
4) Hydroxyapatite
Dentinogenesis is the formation of dentin by odontoblasts of mesenchymal origin
located at the periphery of the dental pulp
Dentinogenesis is initiated by the inductive influence of the enamel organ
involving molecular signaling pathways, such as Wnt, Runx-2, and TGF-?. In the
molar tooth, dentinogenesis starts at the late bell stage, and occurs in the
crown as well as root regions.
Predentin, the first organic matrix secreted by odontoblasts, is composed by
proteoglycans, glycoproteins, and collagens.
What is the percentage of leukocytes required for extraction to be carried out?
1) 30 x 10^9
2) 50 x 10^9
3) 70 x 10^9
4) 100 x 10^9
A leukocyte count of 50 x 10^9 is often considered a threshold for safely performing dental extractions, as it indicates adequate immune function.
The primary mandibular central incisors usually erupt at 1. 6-8 months 2. 2 years 3. 10 - 13 months 4. 52 - 72 weeks
Dental Anatomy Answer: 1The primary mandibular central incisors usually erupt at 6-8 months
Which treatment is most effective for a patient exhibiting type I hypersensitivity to a kiwi?
1) Antihistamines
2) Corticosteroids
3) Immediate epinephrine
4) Intravenous fluids
For severe anaphylactic reactions related to type I hypersensitivity, such as from kiwi, immediate epinephrine administration is crucial for reversal of symptoms.
As far as surgical removal of wisdom teeth is concerned, which of the following is true?
1) Prophylactic prescription of antibiotics reduces dramatically the chances of infection
2) Raising a lingual flap will increase the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve
3) Prophylactic prescription of dexamethasone will dramatically reduce postoperative swelling
4) Inferior dental nerve injury is unlikely since the nerve passes medial to the wisdom tooth root
ADC Test Answer: 2
Raising a lingual flap can increase the risk of temporary nerve injury (neurapraxia) while potentially reducing the risk of more severe nerve damage (neurotmesis).
What is the typical healing time for a simple extraction of a tooth?
1) 3-5 days
2) 1-2 weeks
3) 2-4 weeks
4) 4-6 weeks
Healing after a simple tooth extraction typically occurs within 1 to 2 weeks, although complete healing may take longer.
What is the primary purpose of dental sealants?
1) To restore decayed teeth
2) To reduce caries in pits and fissures
3) To whiten teeth
4) To enhance the appearance of teeth
Dental sealants are protective coatings applied to the chewing surfaces of molars to prevent food particles and bacteria from collecting in pits and fissures, thereby reducing the risk of caries.
What is the primary mechanism by which S. mutans contributes to the
formation of dental caries?
1) Production of lactic acid
2) Formation of dental plaque
3) Secretion of hydrogen sulfide
4) Breakdown of collagen in dentin
S. mutans produces glucosyltransferases that convert dietary sugars into extracellular polysaccharides and lactic acid, which lowers the pH and leads to demineralization of tooth structure.
Which of the following is TRUE regarding the attachment of the mylohyoid muscle?
1) It attaches superiorly at the lateral border of the mandible and inferiorly at the body of the hyoid.
2) It attaches superiorly at the medial border of the mandible and inferiorly at the lesser horn of the hyoid
3) It attaches superiorly at the medial border of the mandible and inferiorly at the greater horn of the hyoid
4) It attaches superiorly at the medial border of the mandible and inferiorly at the body of the hyoid
It attaches superiorly at the medial border of the mandible and inferiorly at the body of the hyoid
Which of the following actions would be considered unethical in a dental practice?
1) Providing treatment based on the patient's informed consent
2) Discussing treatment options with the patient
3) Referring a patient to a specialist when necessary
4) Falsifying patient records to justify treatment
Ethics and Jurisprudence Answer: 4Falsifying records is unethical and illegal, as it compromises patient safety and trust, and violates legal standards of practice
First sign of complication of anaesthesia:
1) Tachycardia
2) Bradycardia
3) Hypertension
4) Convulsions
Tachycardia is often the first sign of many complications seen in anaesthesia.
Suppuration is mainly the result of the combined action of four factors; which of the following is not one of these factors?
1) Necrosis
2) Presence of lymphocytes
3) Collection of neutrophils
4) Accumulation of tissue fluid
ADC Test Answer: 3
While neutrophils are involved in the inflammatory response, they are not a direct factor in the process of suppuration, which primarily involves necrosis, tissue fluid accumulation, and autolysis.
What should a dentist do if a patient is unable to read the informed consent
form due to visual impairment?
1) Have a family member read it to the patient
2) Skip the consent process
3) Read the form to the patient and ensure they understand the information
4) Have the patient listen to an audio recording of the consent form
It is the dentist's responsibility to ensure that the patient
comprehends the information presented in the consent form. If the patient cannot
read, the dentist should read the form to them and answer any questions to
confirm understanding.
Glutamate-pyruvate trans-aminase is predominantly present In: 1. Skeletal muscle 2. Cardiac muscle 3. Brain 4. Liver
Biochemistry Answer: 4Glutamate-pyruvate trans-aminase is predominantly present In Liver
Which of the following medications is known to potentially cause a lichenoid reaction?
1) Amoxicillin
2) Beta blockers
3) Paracetamol
4) Antibiotics
Beta blockers and certain other medications, including NSAIDs and antimalarials, can cause lichenoid drug reactions, characterized by oral lesions resembling lichen planus.
All the following are non-verbal signs of attentive or active listening except:
1) Posture.
2) Eye contact.
3) Mirror.
4) Positive Reinforcement.
Positive reinforcement is not a non-verbal sign of attentive or active listening.
Non-verbal signs of attentive or active listening typically involve body language and facial expressions, such as maintaining good posture, making eye contact, and mirroring the speaker's body language.
Positive reinforcement,
on the other hand, is a verbal or non-verbal response that rewards or encourages
a behavior, and it is not directly related to the act of listening attentively.
There are some enzymes that cause protein to coagulate rather than to produce simpler compund These are known as 1. lab enzymes 2. coagulase 3. proteolytic enzymes 4. enmycin
Microbiology Answer: 1There are some enzymes that cause protein to coagulate rather than to produce simpler compund These are known as lab enzymes
'Programme Operation' in Community health care is same as:
1) Treatment
2) Approval
3) Treatment Planning
4) Diagnosis
In community health care, "Programme Operation" refers to the implementation and
execution of various health programs and interventions. This includes providing
treatment to individuals, ensuring that approved protocols and guidelines are
followed, planning and organizing treatment strategies, and diagnosing health
conditions. Therefore, "Programme Operation" can be equated to the concept of
treatment in community health care.
In partial dentures, guiding planes serve to:
1) Aid in balancing occlusion
2) Ensure predictable clasp retention
3) Form a right angle with the occlusal plane
4) Eliminate the need for posterior clasps
ADC Test Answer: 2
Guiding planes provide a surface to help achieve reliable clasp retention, essential for the stability and effectiveness of partial dentures.
The gas with greatest solubility in blood:
1) Nitrous oxide
2) Nitrogen
3) Oxygen
4) Hydrogen
Although the solubility of nitrous oxide in blood is less than other inhalational agents, its solubility is 35 times more than nitrogen and 15 times more than oxygen.
What is the main function of glucosyltransferase (GTF) produced by S. mutans?
1) It breaks down bacterial cell walls.
2) It converts sucrose into polysaccharides.
3) It neutralizes acids in saliva.
4) It promotes remineralization.
GTF converts sucrose into extracellular polysaccharides, aiding bacterial adherence to tooth surfaces.
What is the primary feature of the double-blind method in clinical trials?
1) Both the patient and the researcher know the treatment being administered.
2) Only the patient knows the treatment being administered.
3) Neither the patient nor the researcher knows the treatment being administered.
4) The researcher knows the treatment, but the patient does not.
The double-blind method is designed to eliminate bias by ensuring that neither the participants nor the researchers know which treatment is being given, thus maintaining the integrity of the study.
The largest sized pororsity is:
1) Micro porosity.
2) Pin hole porosity
3) Suck back porosity
4) Gas inclusion porosity
Main causes of the porosity of alloy castings are:
1) Solidification defects
2) Trapped gases
3) Residual air
1.
Solidification defects cold lead to two different manifestations of porosity;
localised shrinkage porosity and Microporosity.
Localised shrinkage porosity is caused by insufficient feeding of the alloy
during solidification.
Microporosity is also caused by solidification shrinkage, but generally happens
in fine grain alloys when the solidification is too rapid for the microvoids to
segregate. This in turn is caused the mould or casting temperature being too
low.
2. Trapped gases
Many metals dissolve or occlude gases when they are molten. On solidification,
these gases are forced out of the casting causing what is usually called pinhole
porosity. These voids are rather small.
3. Incomplete casting
If the molten alloy is prevented from fully or partially filling the mould and
incomplete or even no casting at all can result.
Addition of carbon is contraindicated in which of the following investment materials :
1) Gypsum bonded
2) Silica bonded
3) Phosphate bonded
4) All
Occurence of carbon contamination from investment can easily be observed in case casting temp.
Such contamination embrittles the alloy.
Ankylosed primary second molars may clinically exhibit
1) percussion sensitivity.
2) infra-occlusal position.
3) temperature sensitivity.
4) buccolingual displacement.
Ankylosed teeth fail to erupt with the adjacent teeth, leading to an infra-occlusal appearance as the jaw grows.
The initial treatment for acute necrotizing ulcerative gingivitis
(ANUG) typically involves:
1) Antibiotics only
2) Topical steroids
3) Surgical intervention
4) Debridement and mouth rinse with H2O2
ANUG is a severe form of gingivitis that requires immediate and aggressive treatment to prevent its progression. The primary treatment involves thorough debridement of necrotic tissue and plaque from the affected areas to reduce the bacterial load and promote healing. Antiseptic mouth rinses, such as hydrogen peroxide (H2O2), are also commonly used to further reduce bacteria and aid in the healing process. Antibiotics may be necessary in severe cases with systemic involvement.
Which of the following is a pharmacologic effects of cocaine:
1) It increases the uptake of catecholamines at adrenergic nerve endings
2) It increases the body temperature
3) It causes bradycardia in large doses
4) It causes tachycardia is small doses
Cocaine releases noradrenaline, adrenaline and dopamine as well as blocks their uptake.
Consent is needed from a patient to share information. Which of the following requires explicit consent?
1) To share information with an insurance company
2) To share information with other doctors in the practice
3) To share information with the therapist treating the patient
4) To share information with the patient's General Medical Practitioner (GMP)
Sharing patient information with an insurance company typically requires explicit consent due to the sensitive nature of the information and privacy regulations.
Which of the following is a characteristic of dentinogenesis imperfecta?
1) Abnormal enamel formation
2) Discolored teeth
3) Increased susceptibility to caries
4) All of the above
Dentinogenesis imperfecta is characterized by abnormal dentin formation, leading to discolored teeth and increased susceptibility to caries.
How should a dentist ensure that a patient fully understands the
information provided during the informed consent process?
1) Use complex medical terminology
2) Ask if the patient has any questions and encourage discussion
3) Provide the information in writing only
4) Assume the patient understands based on their age
Explanation: Engaging the patient in discussion and encouraging questions helps
ensure they understand the information provided, which is crucial for informed
consent.
Why must rests be rigid?
1) To provide flexibility to the denture
2) To ensure they receive positive support
3) To enhance aesthetics
4) To facilitate movement of the RPD
Rests must be rigid to ensure they provide adequate support and stability, receiving positive support from the abutment teeth.
Continuous education and training for dental staff on infection control practices are vital for maintaining a safe environment and reducing the risk of infection.
What is a potential complication of using midazolam in pregnant women?
1) Enhanced sedation effects
2) Withdrawal symptoms in the neonate
3) Rapid metabolism in the body
4) No contraindications noted
Midazolam can cause significant risks to the neonate if used during pregnancy, particularly during the third trimester, leading to withdrawal symptoms like hypotonia and respiratory issues after birth.
What hormone increases blood glucose and decreases potassium?
1) Insulin
2) Cortisol
3) Glucagon
4) Adrenaline
Cortisol increases blood glucose levels by promoting gluconeogenesis and decreases serum potassium levels by enhancing renal excretion.
Why must central and lateral incisors be splinted together when canines are
replaced?
1) To prevent lateral drifting of the bridge
2) To provide additional bone support
3) To improve the aesthetic outcome
4) To balance the bite force distribution
splinting is used to distribute occlusal forces and prevent lateral drifting, which is particularly important when replacing canine teeth.
The regional lymphatic drainage of the left side of the tip of the tongue is to the?
1) Left submandibular lymph node.
2) Left submental lymph node.
3) Left and right submental lymph nodes
4) Left and right submandibular lymph nodes.
The regional lymphatic drainage of the left side of the tip of the tongue is to the left and right submental lymph nodes.
What is the recommended approach to treat a patient with severe dental phobia?
1) Immediate comprehensive treatment
2) Gradual exposure to dental procedures
3) Immediate surgery under general anesthesia
4) Avoiding dental treatment altogether
Gradual exposure through a process like systematic desensitization can help patients with severe dental phobia to build tolerance and overcome their fears.
What is one of the main advantages of using templates for dental records?
1) They eliminate the need for documentation
2) They provide a structured format for organizing information
3) They are always flexible for individual cases
4) They reduce the need for training
Templates can help standardize record keeping and ensure that essential information is consistently documented, although they should be used with caution to avoid limitations.
Glucose can be synthesised from Glyerol, Acetoacetate, Lactic acid
Which of the following has a uricosuric action:
1) Allopurinol
2) Losartan
3) Ramipril
4) Atenolol
Losartan has a uricosuric action in addition to being an angiotensin receptor blocker. Allopurinol is a xanthine oxidase inhibitor which reduces the synthesis of uric acid.
In Dicumarol poisoning which Vit K is used
1) Menadione
2) Menaqunone
3) Phytonadione
4) None of the above
To reverse the effect of overdose of oral anticoagulants:
Phytonadione (K1) is the preparation of choice, because it acts most rapidly, dose depends on the severity of upoprothrombinemia & bleeding.
Cardio stable anaesthetic:
1) Etomidate
2) Propadanil
3) Ketamine
4) Thiopental
Etomidate is known for its cardio stability, making it a preferred choice in patients with cardiovascular issues.
What’s the percentage of individuals over 25 years old with periodontitis in the UK?
1) 30%
2) 50%
3) 64%
4) 75%
Approximately 64% of individuals over 25 years old in the UK are affected by periodontitis, highlighting the prevalence of periodontal disease.
Which of the following cements bonds to tooth structure, which has an anticariogenic effect, has a degree of translucency and does not irritate the pulp?
1) Polycarboxylate cement
2) Resin cement
3) Silicate Cement
4) Glass ionomer cement
Chelation of carboxyl groups of the polyacids with the calcium in the apatite of enamel and dentin is the main mechanism through which glass ionomer bonds to tooth structure. Glass ionomers release fluoride which results in the inhibiton of the progression of secondary caries.
They elicit a greater pulp reaction as compared to ZnoE but generally less compared to zinc phosphate cement.
Where in the periodontal ligament fibers are the fibers thinner?
1) Apical third
2) Middle third
3) Cervical third
4) None
The fibers in the middle third of the periodontal ligament are generally thinner than in the apical or cervical thirds, leading to reduced tensile strength and an area that is more susceptible to damage.
What is the correct sequence of events in tooth development?
1) Differentiation of odontoblast, elongation of enamel epithelium, dentine formation then enamel formation
2) Differentiation of odontoblast, dentine formation then enamel formation, elongation of enamel epithelium
3) Elongation of enamel epithelium, differentiation of odontoblast, dentine formation then enamel formation
4) None of the above
ADC Test Answer: 3
The processes in tooth development unfold with the elongation of the enamel epithelium followed by odontoblast differentiation and the sequential formation of dentine and enamel.
What is the primary responsibility of a healthcare provider when they suspect abuse?
1) Confront the abuser
2) Document findings and report to authorities
3) Discuss with the patient’s family
4) Ignore the signs if the patient is an adult
Healthcare providers must document findings and report suspicions of abuse to the appropriate authorities to ensure the safety and well-being of the patient.
The ethical principle of justice in dentistry relates to:
1) Fair treatment of patients
2) Distribution of dental resources
3) Compliance with legal regulations
4) Both A and B
Explanation: The principle of justice in dentistry involves both fair treatment
of patients, ensuring equitable care and respect for individual rights, and the
distribution of dental resources in a way that is fair and equitable among all
patients.
Which of the following can be caused by excessive consumption of soft drinks?
1) Digestive disorder
2) Tooth erosion
3) Tooth decay
4) Colorization of the tongue
Excessive consumption of soft drinks can cause tooth erosion. Soft drinks are
high in sugar and acid, which can weaken the enamel on the teeth over time. This
erosion can lead to tooth sensitivity, discoloration, and even tooth loss if not
addressed It is important to limit the consumption of sugary and acidic
beverages and maintain good oral hygiene to prevent tooth erosion.
A 64-year-old patient with a history of metastatic breast cancer presents with loose teeth, dental pain, and swollen gums. What is the most likely causative agent?
1) Osteonecrosis of the left mandible
2) Long-term use of bisphosphonates
3) Osteomyelitis
4) Periodontal disease
Patients on long-term bisphosphonates for metastatic cancer are at risk for osteonecrosis of the jaw, which can present with loose teeth and swelling.
Chelating agent contraindicated in iron and cadmium poisoning
1) Penicillamine
2) Des ferroxamine
3) EDTA
4) BAL
Dimercaprol (British antilewisite; BAL) 1.
2. As an adjuvant to Cal. Disod. Edentate in lead poisoning.
3. As an adjuvant to penicillamine in Cu poisoning and in Wilson’s disease – 300 mg/day i.m. for 10 days every second month.
It is contraindicated in iron and cadmium poisoning, because the dimercaprol-Fe and dimercaprol-Cd complex is itself toxic.
Patients with which blood pressure range should be encouraged to seek medical consultation despite being able to undergo dental treatment? 1) 110/70 mmHg 2) 120/80 to 140/90 mmHg 3) 180/110 mmHg 4) 160/110 mmHg
Pathology and Medicine Answer: 2Patients with blood pressure between 120/80 and 140/90 should be encouraged to consult a doctor, even though dental treatment can proceed.
Pethidine should not be given with:
1) Reserpine
2) Propranolol
3) Atenolol
4) MAO inhibitors
Pethidine can cause severe excitatory response and arrhythmias in patients on MAO therapy.
Which of the following anaesthetic agent can be given by both intravenous and intramuscular routes:
1) Thiopentone
2) Propanidid
3) Ketamine
4) Fentanyl-droperidol
Ketamine can be administered via intravenous, intramuscular, oral, and intrathecal routes. It is the second method of choice for induction in children, with the first being inhalational.
The best way to clean a cavity before the placement of GIC is:
1) H2O2
2) Phosphoric Acid
3) Polyacrylic acid
4) Saline
ADC Test Answer: 3
Polyacrylic acid is recommended for cleaning a cavity before using GIC as it helps create an effective bond while preserving the integrity of dentin moisture.
The percentage of total dentine surface dentinal tubules make up at 0.5mm away from pulp is:
1) 20%
2) 50%
3) 70%
4) 80%
ADC Test Answer: 2
Studies have shown that approximately 50% of the total dentin surface at this distance from the pulp chamber is occupied by dentinal tubules, which play a crucial role in sensitivity and responsiveness.
In a dental practice with multiple practitioners, what must be clearly noted in the patient record?
1) The patient's insurance information
2) The identity of the practitioners rendering treatment
3) The patient's payment history
4) The patient's family medical history
It is important to document which practitioner provided care to ensure accountability and continuity of care.
What is force applied per unit area?
1) Strain
2) Stress
3) Couple
4) Center of resistance
SOLUTION Stress is the force applied per unit area while strain can be defined as the internal distortion per unit area.
Stress and strain are inter-related terms as stress is an external force acting upon a body while strain is the resultant of stress on that body.
Strain can be expressed in the form of a change in either the external dimension or internal energy of the body.
Which of the following is a physical sign that a dental patient may be a victim
of abuse?
1) A history of poor oral hygiene
2) Multiple missing teeth
3) Evidence of previous dental restorations
4) Inconsistent explanations of dental injuries
Explanation: While poor oral hygiene and missing teeth can be indicators of
neglect, they are not exclusively signs of abuse. However, if a patient provides
inconsistent explanations for their injuries, it may raise suspicion of abuse. Dentists should be attentive to the patient's history and any inconsistencies
that could suggest intentional harm.
What is the difference between a horizontal mattress suture and a simple interrupted suture?
1) A horizontal mattress suture has a single loop, while a simple interrupted suture has multiple loops.
2) A horizontal mattress suture is used to compress tissues, while a simple interrupted suture is not.
3) A simple interrupted suture is used to approximate tissues in a straight line, while a horizontal mattress suture is used for more complex tissue relationships.
4) Both sutures have the same function and are used interchangeably.
ADC Test Answer: 2
A horizontal mattress suture is designed to compress tissues against each other, promoting healing and reducing tension.
An increase or decrease in the Y axis is related to:
1) The growth pattern
2) Extrusion of molars
3) Intrusion of molars
4) All of the above
SOLUTION
Which dental material is known for its use as a direct restorative material?
1) Resin composite
2) Glass ionomer cement
3) Amalgam
4) All of the above
Resin composites, glass ionomer cements, and amalgam are all commonly used direct restorative materials in dentistry.
Which of the following factors contributes to increased xerostomia in elderly
patients?
1) Increased salivary gland function
2) Systemic medications
3) Higher water intake
4) Increased oral hydration
Many medications taken by older adults, such as antihypertensives
and antidepressants, can lead to reduced saliva production, resulting in
xerostomia.
Benign migratory glossitis or Geographic Tongue manifests itself in the oral cavity as:
1) Irregularly outlined areas of hyperkeratosis of the dorsal surface of the tongue
2) Furrows outlined the dorsal surface radiating out from a central groove in the center of the tongue
3) Loss (atrophy) of filiform papillae in multiple irregularly outlined areas
4) Irregularly outlined erythematous area of hypertrophic fungiform
ADC Test Answer: 3
Geographic tongue is characterized by the loss of filiform papillae, leading to irregular, smooth, red patches on the tongue.
The first teeth to erupt in the dental arches of the human being are the, primary 1. mandibular cuspids 2. maxillary central incisors. 3. mandibular central incisors 4. maxillary first molars
Dental Anatomy Answer: 3The first teeth to erupt in the dental arches of the human being are the, primary mandibular central incisors
Maximum decrease in cardiac output is caused by:
1) Enflurane
2) Halothane
3) Sevoflurane
4) Methoxyflurane
Enflurane causes the maximum decrease in cardiac output, followed by halothane.
What is the difference between implied consent and informed consent?
1) Implied consent is given verbally, while informed consent is given in writing
2) Implied consent is used when the patient is unconscious, while informed
consent is used when the patient is conscious
3) Informed consent requires the patient to be fully aware of the risks and
alternatives, while implied consent assumes the patient agrees based on their
actions
4) Implied consent is never valid in dentistry, while informed consent is always
required
Informed consent involves an explicit understanding and agreement by the patient, whereas implied consent is when the patient's behavior (such as sitting in the dental chair) suggests they consent to the procedure. Informed consent is always necessary for significant procedures, while implied consent may be sufficient for minor, non-invasive treatments.
Which of the following conditions is an example of a mucous retention
phenomenon?
1) Nasopalatine cyst.
2) Koplik’s spots.
3) Ranula
4) Residual cyst.
A ranula is a mucous cyst caused by obstruction of the sublingual or
submandibular salivary glands.
It presents as a swelling in the floor of the mouth, typically painless unless
infected
What information should be clearly noted in the dental record when multiple dental practitioners are involved?
- The name of the primary dentist only
- The name and specialty of each practitioner who renders treatment
- The fee charged by each dentist
- The patient's preferred dentist
It is essential to have a clear record of which practitioner provided specific treatments for legal and quality assurance purposes.
What is the most common pharmacological agent used for conscious sedation in dentistry?
1) Midazolam
2) Diazepam
3) Lorazepam
4) Alprazolam
Midazolam is commonly used for conscious sedation in dentistry due to its rapid onset, short duration of action, and amnesic properties.
What is the primary function of a wedge in oral surgery?
1) To remove teeth
2) To split teeth
3) To expand the tooth socket
4) To elevate the tooth
A wedge is used to create space in the tooth socket, facilitating tooth elevation and reducing the risk of fracture during extraction.
What is the most appropriate treatment for an elderly patient with a loose
denture?
1) Relining the denture
2) Implant placement
3) Adhesive use
4) Removal of the denture
Relining the denture can help improve its fit and stability, making it more comfortable for the patient.
What type of disinfectant is most commonly used for surface disinfection in a
dental office?
1) Alcohol-based
2) Chlorine-based
3) Phenolic-based
4) Iodine-based
Phenolic disinfectants are commonly used in dental offices because
they are broad-spectrum, effective against a wide range of pathogens, and
suitable for disinfecting surfaces and equipment.