Dentist Abroad
An orthopantomogram (OPG) and a PA (posteroanterior) mandible X-ray are essential radiographic views for diagnosing mandibular fractures and determining management strategies.
The administration of penicillin G along with probenacid results in 1. increased excretion of probenacid in the feces and perspiration 2. increased excretion of probenacid in urine 3. increased metabolism of penicillin G 4. decreased renal excretion of penicillin G
Pharmacology Answer: 4The administration of penicillin G along with probenacid results in decreased renal excretion of penicillin G
Which bacteria is most commonly associated with acute dentistry-related infections?
1) Streptococcus viridans
2) Staphylococcus aureus
3) Escherichia coli
4) Neisseria meningitidis
Streptococcus viridans is part of the normal oral flora and frequently implicated in dental infections, particularly endocarditis following dental procedures.
A patient with osteitis and pus after a third molar extraction. Which antibiotic should be prescribed?
1) Amoxicillin
2) Metronidazole
3) Clindamycin
4) Cephalexin
Metronidazole is commonly used to treat infections associated with dental procedures, particularly those involving anaerobic bacteria, such as in cases of osteitis.
Which factor is likely implicated in the excessive fibrinolysis observed in localized alveolar osteitis?
1) Platelets
2) Fibrinogen
3) Plasmin
4) Thrombin
Excessive local fibrinolytic activity, primarily due to elevated levels of plasmin, is implicated in the development of localized alveolar osteitis after tooth extractions.
Which of the following is/are associated with the presence of microorganisms in
the bloodstream?
1) Anachoresis.
2) Cavernous sinus thrombosis.
3) Bacteremia
4) All of the above.
All the options listed (Anachoresis, Cavernous sinus thrombosis, and Bacteremia) are associated with the presence of microorganisms in the bloodstream. Anachoresis refers to the process by which bacteria can localize in tissues, cavernous sinus thrombosis can occur due to the spread of infection from the oral cavity, and bacteremia is the presence of bacteria in the bloodstream itself.
Methemoglobinemia caused by?
1) Procaine
2) Prilocaine
3) Etidocaine
4) Ropivacaine
Methemoglobinemia is mainly caused by prilocaine but can also be caused by benzocaine and rarely reported with lignocaine.
All of following are effects of being unassertive, except:
1) Having low self-esteem.
2) Becoming aggressive.
3) Having a lack of purpose.
4) Developing social anxiety.
Being unassertive can lead to various negative effects, such as having low self-esteem, developing social anxiety, and having a lack of purpose. However, becoming aggressive is not typically associated with being unassertive. In fact, individuals who are unassertive may tend to avoid confrontation and conflict, which is the opposite of aggression.
What should a dentist do if a patient changes their mind about a treatment
after informed consent has been given?
1) Proceed with the treatment regardless of the patient's change of heart
2) Discuss the patient's concerns and possibly modify the treatment plan
3) Require the patient to obtain consent from a second dentist
4) Document the patient's withdrawal of consent and stop the treatment
Patients have the right to withdraw consent at any time. The dentist must respect this decision and stop the treatment. It is important to document the patient's wishes to avoid any misunderstandings or legal issues.
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.
Atenolol is a cardioselective beta-blocker used for hypertension management.
The Beta Blocker with local Anesthetic effect is
1) Pindolol
2) Atenolol
3) Esmorolol
4) Timolol
Local anesthetic action, also known as "membrane-stabilizing" action, is a prominent effect of several -blockers Acebutolol, Labetalol, Pindolol Propranolol.
This action is the result of typical local anesthetic blockade of sodium channels and can be demonstrated experimentally in isolated neurons, heart muscle, and skeletal muscle membrane.
What is the sex ratio for oral cancer?
1) 2:3
2) 1:2
3) 2:1
4) 3:1
In England and Wales, the male to female ratio for oral cancer is approximately 2:1, while in Scotland, it is about 3:1, indicating a higher prevalence in males.
What is the percentage of edentulous patients in England and Scotland?
1) 10%
2) 25%
3) 50%
4) 64%
Approximately 64% of adults over 65 years are edentulous in the UK, reflecting the impact of dental health over time.
The part of the removable appliance which provides the anchorage is
1) Adams clasp
2) Base plate
3) Active labial bow
4) Guided springs
SOLUTION Baseplate: The hard plastic part of some retainers that covers the gum and has the wire components of the retainers attached to it.
What is the most common cause of malignant hyperthermia during GA?
1) Halothane.
2) Ketamine.
3) Sevoflurane.
4) Desflurane.
ADC Test Answer: 1
Malignant hyperthermia is a life-threatening condition triggered by certain anesthetic agents, most commonly halothane, which leads to hypermetabolism in skeletal muscles and can cause muscle rigidity, high temperature, and acidosis.
What is the typical requirement for informed consent in dental tourism?
1) Written consent from the patient's regular dentist
2) Written consent from the patient
3) Consent from the patient's guardian if under 18
4) Verbal consent is sufficient
Informed consent remains essential in the context of dental
tourism, and patients should receive the same standard of care and information
as they would in their home country.
What is the average number of 15-year-olds who have lost 6-7 teeth?
1) 1.1
2) 3.1
3) 4.7
4) 5.5
Current statistics indicate that approximately 3.1% of 15-year-olds have lost 6-7 teeth due to caries or other dental issues.
What is the best method to disinfect a dental bridge before sending it to the lab?
1) Soaking in bleach
2) Autoclaving
3) Using 70% isopropyl alcohol
4) Rinsing with water
70% isopropyl alcohol is effective for disinfecting dental appliances as it kills bacteria and viruses without damaging the material of the bridge.
How can a cusp fracture immediate to a Class II inlay be detected?
1) History.
2) Visually.
3) Radiograph.
4) Percussion.
E. Touching the tip of the cusp / Pressure on the cusp.
ADC Test Answer: 3
A cusp fracture may not always be visible on a radiograph due to its location and extent, but it is often the best method to detect such a fracture in a clinical setting.
Which of the following is NOT a type of informed consent?
1) Implied consent
2) Verbal consent
3) Written consent
4) Digital consent
The recognized types of informed consent are implied, verbal, and written. Digital consent is not formally recognized as a distinct type.<
Which immunoglobulin is present in periodontitis?
1) IgA
2) IgM
3) IgG
4) IgE
IgG, especially IgG2, is commonly found in the gingival tissues of patients with periodontitis, indicating an immune response to bacterial infection. IgG plays a key role in protecting periodontal tissue by neutralizing toxins and aiding the elimination of pathogens through mechanisms like phagocytosis. Higher levels of immunoglobulins, particularly IgG, are associated with an increased immune response in inflamed gingival tissues. Secretory IgA (sIgA) is the main immunoglobulin in secretions and acts as the first line of defense, preventing microbial adherence to the oral mucosa. IgM can also be detected, particularly in inflamed states.
What role does the dental assistant play in managing an anxious patient?
1) To perform all clinical procedures
2) To provide medication to patients
3) To offer emotional support and reassurance
4) To make treatment decisions
Dental assistants can play a crucial role in offering emotional support, helping to soothe anxious patients during visits.
What is the primary advantage of using digital radiography in dentistry?
1) Lower radiation exposure
2) Immediate image availability
3) Enhanced image quality
4) All of the above
Digital radiography offers lower radiation exposure, immediate image availability, and enhanced image quality compared to traditional film radiography.
Which functional assessment tool is commonly used to evaluate the dental
treatment needs of geriatric patients?
1) Barthel Index
2) Katz Index of Independence in Activities of Daily Living (ADL)
3) Mini-Mental State Examination (MMSE)
4) Geriatric Depression Scale
The Katz Index assesses a patient's ability to perform daily
activities, influencing their capacity to maintain oral hygiene and attend
dental appointments.
What cement do you use to bond an alumina core ceramic crown?
1) Panavia
2) Resin modified glass ionomer cement
3) Zinc phosphate
4) Glass ionomer cement
Panavia is a resin cement specifically designed for bonding ceramic restorations, providing strong adhesion to alumina cores.
What is the primary purpose of maintaining accurate and complete dental records?
1) To comply with legal requirements
2) To facilitate effective communication among dental professionals
3) To ensure proper patient care and treatment planning
4) All of the above
Accurate and complete dental records serve multiple purposes, including legal documentation, communication among dental professionals, patient care and treatment planning, and insurance reimbursement. They are essential for continuity of care, patient safety, and practice management.
Typical features of Down’s syndrome (Mongolism) do not include:
1) Multiple immunodeficiencies
2) Severe caries but minimal periodontal disease
3) Susceptibility to infections
4) Multiple missing teeth and malocclusion
ADC Test Answer: 2
Individuals with Down syndrome often exhibit a higher incidence of periodontal disease rather than minimal periodontal issues.
Contraindication for supraglottic laryngectomy is all except:
1) Tumour involving pyriform sinus
2) Vocal cord fixidity
3) Tumour involving the preepiglottic spread
4) Post cricoid area expansion
Pre-epiglottic involvement is not a contraindication for supraglottic laryngectomy.
What information is included in a dental chart? 1) Patient's name and contact details 2) A visual representation of the patient's teeth and their conditions 3) Treatment notes and plans 4) All of the above
Dental Records Answer: 2A dental chart is a graphic representation of a patient's mouth that includes all teeth, their conditions, restorations, and any other relevant oral information. It does not typically include the patient's name and contact details or extensive treatment notes, which are usually kept in the patient's full dental record.
Naloxone reverses the actions of:
1) Morphine
2) Diazepam
3) Thiopentone
4) All of the above
Glycolysis occurs in: 1. Cytoplasm 2. Mitochondrion 3. Both In cytoplasm and mitochondria 4. Only in presence of O2
Biochemistry Answer: 1Glycolysis occurs in Cytoplasm
Hyperemia of the pulp is
1) an acute inflammation with intermittent paroxysms of pain which may become
continuous.
2) an increased volume of blood within dilated vessels and increased blood flow.
3) a chronic situation whereby minute arterioles of pulpal tissue are engorged
for long periods creating temporary
episodes of pain.
4) a transient invasion of bacterial elements into the outer lying stroma of the
pulpal tissue.
Hyperemia refers to an increase in blood flow to the pulp, often due to inflammation or irritation. This condition can lead to symptoms such as pain and sensitivity.
Drug class causing free water clearance:
a) Diuretic
b) Saluretic
c) Uricosuric
d) Aquaretic
Vasopressin antagonists like tolvaptan are aquaretics
Patients with which condition may require premedication with antibiotics before dental procedures?
1) Asthma
2) Congenital heart defects
3) Alzheimer’s disease
4) Hypertension
Patients with certain congenital heart defects are at an increased risk of bacterial endocarditis and may require prophylactic antibiotics before dental treatment.
The primary purpose of surgical therapy for the treatment of periodontitis is to:
1) Apically position the flap.
2) Eliminate periodontal pockets.
3) Remove the ulcerated epithelium of the periodontal pocket.
4) Improve access for removal of local etiologic factors.
Periodontics Answer: 4
Explanation: Surgical
therapy aims to provide better access to
subgingival deposits, ensuring thorough removal
of calculus and bacteria.
Which of the following is a sign of child abuse that a dentist might observe during a routine examination?
1) Frequent, unexplained oral injuries
2) Reluctance to speak openly about home life
3) Presence of dental caries
4) Fear of the dentist
Frequent, unexplained oral injuries such as fractured teeth or lacerations can be indicative of child abuse.
Which of the following is NOT a valid reason for a patient to refuse
informed consent?
1) Fear of pain
2) Lack of financial resources
3) Religious beliefs
4) Desire for a second opinion
While financial concerns may influence a patient's decision, they are not a valid reason for refusing informed consent. The other options (fear, religious beliefs, and desire for a second opinion) are all valid reasons for a patient to refuse or seek further information before consenting to treatment.
What is the primary concern when using templates for dental records?
- Lack of flexibility
- High cost of implementation
- Limited accessibility for patients
- Requires advanced IT skills
While templates can help organize information, the primary concern is that they may not capture all individual aspects of a patient's case or allow for the nuances of personalized care.
Common cause of allergy in orthodontics:
1) Composite resin.
2) Vinyl.
3) Nickel.
4) Acrylic.
ADC Test Answer: 3
Nickel is a common allergen found in many orthodontic appliances, particularly in metal brackets or wires.
A patient reveals to the dental hygienist that they are being physically abused at home. What should the hygienist do first?
1) Encourage the patient to confront the abuser
2) Report the abuse to the authorities
3) Offer to provide the patient with resources for help
4) Keep the information confidential
The hygienist is a mandated reporter and must report any disclosures of abuse to ensure the patient's safety.
What type of consent is required for a simple buccal pit restoration?
1) Implied consent
2) Verbal consent
3) Written consent
4) Informed refusal
Implied consent is sufficient for routine and non-invasive
procedures, such as a simple buccal pit restoration, as it is assumed the
patient agrees to the treatment based on their cooperation during the process.
What is the recommended time frame for administering nitrous oxide sedation to achieve its anxiolytic effect?
1) 5-10 minutes
2) 2-3 minutes
3) 30-60 minutes
4) 1-2 minutes
Nitrous oxide typically takes 5-10 minutes to reach its full effect, allowing patients to feel relaxed and less anxious about their dental treatment.
What is the main characteristic of dentinal lesions?
1) They are always cavitated.
2) They widen due to higher penetrability of dentin.
3) They are less susceptible to decay than enamel lesions.
4) They do not require removal during restoration.
Dentinal lesions widen due to the higher penetrability of dentin, allowing for faster progression of decay.
Maximum shrinkage after gingival curettage expected from tissue that is:
1) Fibroedematous
2) Edematous
3) Fibrotic
4) Formed within an infrabony pocket
Edematous tissue contains excess fluid, which can lead to greater shrinkage after curettage compared to fibrotic tissue, which is denser and less likely to shrink significantly.
A 6 year old child has a non-vital primary mandibular second molar which has a
draining sinus tract from he bifurcation area The most appropriate management
is
1) extraction.
2) observation.
3) pulpotomy.
4) direct pulp capping.
In a patient shot in the back of the head with the bullet passing through the forehead, which bones are least likely to be damaged? 1) Maxilla and temporal 2) Frontal and parietal 3) Occipital and sphenoid 4) Zygoma and ethmoid
Anatomy Answer: 1The trajectory of the bullet from the back of the head to the forehead is less likely to involve the maxilla and temporal bones compared to the others.
What is the purpose of a pulp vitality test before a restorative procedure?
1) To determine the presence of pulp infection.
2) To assess the depth of the cavity preparation.
3) To evaluate the need for endodontic treatment.
4) To ensure that the patient is not allergic to the restorative material.
ADC Test Answer: 1
Pulp vitality tests are conducted to assess the health of the tooth's pulp and identify any signs of infection before proceeding with a restorative treatment.
What fluoride treatment is recommended for a child with a high caries rate?
1) 2,800 ppm toothpaste
2) 5,000 ppm toothpaste
3) Application of 2.2% Duraphat 2 times yearly
4) Application of 2.2% Duraphat 3-4 times yearly
For children with a high caries rate, more frequent applications of fluoride varnish like Duraphat are recommended to provide additional protection.
Which of the following is a common form of neglect that can lead to significant dental problems?
1) Failure to provide dental care
2) Forcing a child to eat only sugary foods
3) Physical abuse to the head and neck region
4) Emotional abuse
Neglect often manifests as the failure to provide essential dental care, leading to severe dental problems.
The principle of justice in healthcare ethics refers to:
1) The obligation to tell the truth
2) Fair distribution of healthcare resources
3) The duty to act in the best interest of the patient
4) Respecting the patient's wishes
Ethics and Jurisprudence Answer: 2Justice involves ensuring that patients receive fair and equitable access to healthcare resources and services, regardless of their background.
What is the best method to detect a crack in a tooth?
1) Visual inspection.
2) Tactile sensation with an explorer.
3) Radiograph.
4) Transillumination.
ADC Test Answer: 3
While visual inspection and tactile sensation can sometimes indicate a crack, a radiograph provides the best method for detecting cracks as it allows the dentist to see the internal structure of the tooth and any associated bone changes.
During which stage of caries can a lesion be detected using transillumination?
1) White spot lesion
2) Dentinal caries
3) Enamel caries
4) Advanced cavitation
Transillumination is most effective in detecting interproximal caries, particularly enamel lesions, as the light can penetrate and highlight changes in the tooth structure at these early stages.
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.
Ideally, Orthodontic traction to pull an impacted tooth to line of arch should begin at
1) 2-3 months post surgically
2) As soon as possible after surgery
3) After a waiting period of at least1.5 months
4) Only the method of traction is critical, not the time
SOLUTION Mechanical approaches for aligning unerupted teeth.
Ideally a fixed orthodontic appliance should already be in place before the unerupted tooth is exposed, so that orthodontic force can be applied immediately.
If this is not practical, active orthodontic movement should being no later than 2 or 3 weeks post-surgically.
What is the largest possible cavosurface angle?
1) 90 degrees
2) 100 degrees
3) 110 degrees
4) 120 degrees
The largest possible cavosurface angle in dental restorations is typically around 110 degrees, which helps in achieving a proper seal and retention.
What is the term for the process of cleaning, disinfecting, and sterilizing
reusable dental handpieces?
1) Decontamination
2) Sterilization
3) Reprocessing
4) Disinfection
Reprocessing refers to the steps taken to prepare reusable dental
handpieces for safe use on another patient, including cleaning, disinfection,
and sterilization.
The use of fluoride in treating root surface caries aims to protect:
1) Enamel
2) Dentin and cementum
3) Pulp
4) Cuticle
ADC Test Answer: 2
Fluoride application helps to strengthen dentin and cementum surfaces against carious lesions, offering protection from decay.
For stage 2 hypertensive patients, periodic monitoring during dental procedures helps manage blood pressure fluctuations.
What is the significance of the critical pH in dental caries progression?
1) It is the pH at which bacteria can survive in the oral cavity.
2) It is the pH at which hydroxyapatite begins to dissolve.
3) It is the pH at which saliva stops protecting the tooth.
4) It is the pH at which fluoride becomes ineffective.
The critical pH is the point at which hydroxyapatite dissolves, marking the onset of demineralization and the potential for caries development.
What should a dentist do if a patient is unable to provide informed consent
due to language barriers?
1) Proceed with treatment without consent
2) Use a family member as an interpreter
3) Use a professional interpreter or translation services
4) Rely on non-verbal cues from the patient
Dentists should use professional interpreters or translation services to communicate effectively with patients who do not speak the same language. This ensures accurate information is conveyed and that the patient fully understands their treatment options and can make informed decisions.
Which of the following is a key step in preparing a tooth for a stainless steel crown?
1) Reducing the occlusal surface.
2) Placing a rubber dam.
3) Applying a sealant.
4) Using a diamond bur to prepare the crown.
Before placing a stainless steel crown, the occlusal surface needs to be reduced to ensure proper fit and prevent interference with opposing teeth.
Which of the following has the highest sucrose content?
1) Ice cream
2) Canned juice
3) Cough syrups
4) Breakfast cereal
Cough syrups often contain high amounts of added sugars, including sucrose, to improve taste and mask other ingredients, making them higher in sugar content than the other options.
What is the Angle classification of occlusion based upon?
Orthodontics Answer: 31. The position of the maxillary incisors relative to the mandibular incisors
2. The position of the maxillary incisors relative to the mandibular incisors
3. The position of the maxillary canines and first permanent molars relative to the mandibular canines and first permanent molars.
4. The position of the upper lip relative to the lower lip
The position of the maxillary canines and first permanent molars relative to the mandibular canines and first permanent molars
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 is the most common occupational health problem among dentists ?
1) Tinnitus
2) Musculoskeletal pain
3) Hypertension
4) Hearing loss
Musculoskeletal pain was the most common occupational health problem, with 78% of the dentists reporting it. This is consistent with findings from other studies that highlight the prevalence of musculoskeletal disorders in the dental profession due to prolonged sitting postures, repetitive movements, and manual dexterity required in dental practice.
The alpha-2 function pre-synaptically at the neuromuscular junction is
responsible for:
1) Facilitation of transmitter release
2) Inhibition of transmitter release
3) Activation of cholinergic receptors
4) Blockade of sodium channels
Alpha-2 receptors located pre-synaptically can inhibit the release of the neurotransmitter acetylcholine.
Vasopressor of choice for spinal hypotension in pregnancy:
1) Ephedrine
2) Mephentermine
3) Methoxamine
4) None of the above
Local Anesthesia Answer: 2
Mephentermine
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 one of the following is used in water fluoridation?
1) SnF2
2) 1.23% APF
3) H2SiF2
4) CaSiF2
ADC Test Answer: 3
Hydrofluorosilicic acid (H2SiF2) is widely used for water fluoridation, replacing hydroxyapatite with more decay-resistant fluoroapatite in tooth enamel.
Features of Vitamin C deficiency is due to defect of which enzyme 1. Lysyl hydroxylase 2. Lysyl oxidase 3. Procollagen peptidase 4. None of the above
Biochemistry Answer: 1Vitamin C deficiency is due to defect of Lysyl hydroxylase
What is the effect of fluoride on enamel solubility?
1) It increases solubility.
2) It decreases solubility.
3) It has no effect.
4) It only affects dentin.
Fluoride decreases enamel solubility, making it more resistant to acid damage.
The essential. sulphur containing amino acid is: 1. Methionine 2. Cystetne 3. Cystine 4. Valine
Biochemistry Answer: 1Methionine is sulphur containing AminoAcid
What is the primary function of the tensor tympani muscle?
1) To assist in swallowing
2) To dampen loud sounds
3) To facilitate hearing
4) To stabilize the jaw
The tensor tympani muscle helps protect the inner ear from loud sounds by tensing the tympanic membrane, reducing sound transmission.
Which of the following is NOT a component of informed consent?
1) Competency of the patient
2) Voluntariness of the consent
3) Explanation of the cost of treatment
4) Presence of a witness
Explanation: Although a witness can be part of the informed consent process in certain situations, the core components are the patient's competency to make decisions, the voluntariness of their consent, and the provision of comprehensive information about the treatment, including risks, benefits, and alternatives.
What is the difference between implied and verbal consent?
1) Implied consent requires no action from the patient, while verbal consent
involves the patient stating their agreement
2) Verbal consent is documented, while implied consent is not
3) Implied consent is for diagnostic procedures, and verbal consent is for
treatments
4) There is no difference between implied and verbal consent
Implied consent is inferred from the patient's passive cooperation, while verbal consent requires the patient to explicitly state their agreement to the proposed treatment.
What is the recommended prothrombin time for safe tooth extraction?
1) Less than 20 seconds
2) Within 1½ times the normal prothrombin time
3) Within 2 times the normal prothrombin time
4) More than 25 seconds
Extraction can be done if the prothrombin time is less than or equal to 1½ times the normal range to ensure adequate blood clotting.
Rate limiting step in cholesterol synthesis is HMG CoA reductase
The most likely reason for porcelain fracturing off a long and narrow
metalceramic fixed partial denture is that the
framework alloy had an insufficient
1) elastic modulus.
2) proportional limit.
3) fracture toughness.
4) tensile strength.
The elastic modulus refers to the material’s stiffness and resistance to
deformation.
An insufficient elastic modulus allows the framework to flex under stress,
leading to stress concentrations in the overlying porcelain.
This can cause porcelain fractures, especially in long-span prostheses.
What is the most common cause of pain in elderly patients with dental
implants?
1) Peri-implantitis
2) Implant fracture
3) Implant rejection
4) Nerve damage
Peri-implantitis, an inflammatory process affecting the tissues
surrounding the implant, is a common cause of pain and discomfort in patients
with dental implants.
What is a common oral manifestation of bulimia nervosa?
1) Xerostomia
2) Erosion of dental enamel
3) Oral thrush
4) Gingival hyperplasia
The exposure of teeth to stomach acids due to vomiting can lead to significant enamel erosion.
Ambroxol is a :
1) Mucolytic agent
2) Bronchial secretion enhancer
3) Antitussive
4) None of the above
Expectorants (Mucokinetics)
(a) Bronchial secretion enhancers : Sodium or Potassium citrate, Potassium iodide, Guaiphenesin (Glyceryl guaiacolate), balsum of Tolu, Vasaka, Ammonium chloride.
(b) Mucolytics: Bromhexine Ambroxol Acetyl cysteine Carbocisteine
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.
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 approach to treating an acute dental infection in an
elderly patient?
1) Antibiotic therapy
2) Drainage of the abscess
3) Extraction of the infected tooth
4) Immediate root canal therapy
Initially, the primary goal is to drain the infection and alleviate pain before considering further treatment options like antibiotics or tooth preservation procedures
Creatine Phosphate is the major source of glucose for the whole body during starvation
How is acetylcholine released?
1) Diffusion
2) Exocytosis
3) Active transport
4) Osmosis
Acetylcholine is released from nerve terminals into the synaptic cleft via exocytosis, a process where vesicles fuse with the presynaptic membrane.
The fibres of Purkinje?
1. Are remains of embryonic cardiac muscle fibres
2. Are placed over the pericardium
3. Arise from the sinu-arterial noded a and b both
4. a and b both
These form specialized fibres of the heart and are supposed to be terminal filaments of bundle of His.
The minimum and maximum temperature for normal metabolic activity microorganisms that live on or within the human body is 1 5°to 30° 2 20° C to 45°C 3. 30°C to 40°C 4. 15°C to 6O°C
Microbiology Answer: 2The minimum and maximum temperature for normal metabolic activity microorganisms that live on or within the human body is 20° C to 45°C
Which dimension in which arch is considered as a safety value for pubertal growth spurts?
1) Maxillary intercanine dimension
2) Mandibular intercanine dimension
3) Maxillary intermolar width
4) Mandibular intermolar width
SOLUTION Intercanine width serves as safety valve for dominant horizontal basal mandibular growth spurt.
Most commonly used local anesthetic for rhinolaryngologic cases
1) Mepivacaine (Carbocaine)
2) Ropivacaine (Naropin)
3) Bupivacaine (Marcaine)
4) Cocaine
Cocaine is the most commonly used local anesthetic for rhinolaryngologic cases.
Penicillins:
1) Are the antibiotic of choice for anaerobic infections
2) Are bacteriostatic
3) Are protagonistic to tetracycline
4) Interfere with bacterial cell wall synthesis
The penicillins all act by interfering with bacterial cell wall synthesis, by inhibiting cross-linking of the mucopeptides in the cell wall and as such are bacteriocidal.
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.
Which of the following is an example of a chemical hazard in a dental office? 1) Repetitive motion injuries 2) Exposure to dental amalgam 3) Loud noises from dental equipment 4) Inadequate lighting
Occupational Hazards Answer: 2Chemical hazards in dentistry include exposure to materials such as dental amalgam, which contains mercury, and other chemicals used in dental procedures.
What is the most abundant immunoglobulin in saliva during infections?
1) IgA
2) IgM
3) IgG
4) IgE
IgA is the most abundant immunoglobulin in saliva and plays a crucial role in mucosal immunity, especially during infections.
Which of the following clinical conditions is the most serious?
1) Acute apical abscess of a mandibular central incisor.
2) Mid facial cellulitis.
3) Chronic apical abscess of a mandibular third molar.
4) Infected dentigerous cyst.
Mid-facial cellulitis can rapidly progress to life-threatening complications
like cavernous sinus thrombosis or airway obstruction.
Which antihypertensive agent is an ACE inhibitor?
1) Amlodipine
2) Losartan
3) Ramipril
4) Atenolol
Ramipril is an ACE inhibitor, while Amlodipine is a calcium channel blocker, Losartan is an ARB, and Atenolol is a beta-blocker.
Which of the accompanying is NOT an intermediate acting muscle relaxant?
1) Cisatracurium
2) Rocuronium
3) Mivacurium
4) Vecuronium
Mivacurium is a short-acting muscle relaxant, whereas Cisatracurium, Rocuronium, and Vecuronium are intermediate-acting.
Beta-blockers reduce blood pressure primarily by:
1) Blocking angiotensin II receptors
2) Reducing heart rate and cardiac output
3) Increasing diuresis
4) Vasodilation
Beta-blockers lower blood pressure by decreasing heart rate and the force of contraction, which reduces cardiac output.
What is the best approach regarding sedation for pregnant women?
1) Mandatory sedation
2) Always use benzodiazepines
3) Best to avoid sedation
4) Only use nitrous oxide
The use of sedation, particularly benzodiazepines, during pregnancy carries risks that could harm the fetus.
Paraesthesia in the distribution of the inferior alveolar nerve, including the lower lip, strongly suggests a mandibular fracture. This is often due to trauma to the inferior alveolar nerve.
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 percentage of older adults in nursing homes exhibit untreated dental
caries?
1) 10-20%
2) 30-40%
3) 50-60%
4) 70-90%
Studies show that a significant proportion of elderly residents in
nursing homes have untreated dental caries, often due to inadequate access to
dental care.
How should patient records be organized in a traditional paper filing system?
- Alphabetically by patient surname
- Chronologically by appointment date
- By the amount paid for services
- By the dentist who treated the patient
For easy retrieval, patient records are typically organized alphabetically, usually by the patient's last name.
How often should fire risk assessments be carried out in dental practices?
1) Every 3 months
2) Every 6 months
3) Every 9 months
4) Once a year
Fire safety regulations stipulate that fire risk assessments must be conducted at least once a year to ensure the safety of individuals in environments such as dental practices.
Dry mouth during antidepressant therapy is caused by blockade of:
1) Muscarinic acetylcholine receptors.
2) Serotonergic receptors.
3) Dopaminergic receptors.
4) GABA receptors.
Anticholinergic side effect of antidepressant leads to dry mouth in the patients on these drugs. Dry mouth is due to the Muscarinic acetylcholine receptor antagonism of these drugs.
What are fibrin degradation products (FDPs) indicative of in the context of DIC?
1) Normal coagulation
2) Active fibrinolysis
3) Increased platelets
4) Stable hemostasis
Elevated levels of fibrin degradation products suggest that fibrinolysis is happening in response to excessive clotting activity typical of DIC.
To impart a hardening heat treatment to a dental gold alloy, the best method is to Reheat to 450°C and cool uniformly to 250°C over a period of 15 to 30 minutes
What is the primary concern when administering local anesthesia to a patient with a bleeding disorder?
1) Increased pain sensitivity
2) Prolonged bleeding from the injection site
3) Inability to achieve adequate anesthesia
4) Higher risk of infection
Patients with bleeding disorders, such as hemophilia, may have difficulty controlling bleeding, even from minor procedures like local anesthetic injections.
When calcospherites fail to fuse during calcification of dentin matrix then
1 Interglobular dentin is formed
2 Dead tracts are found in formed dentin
3 Irregular dentin results
4 None
Sometimes, mineralization of dentin begins in small globular areas that fail to coalesce into a homogenous mass.
These zones are known as globular dentin or interglobular spaces. Thus, demonstrating defect of mineralization and not of matrix formation, the dentinal tubules pass uninterruptedly through interglobular dentin.
Following drug interact with cefotaxime?
1) Digoxin
2) Paracetamol
3) Loop diuretics
4) Nifedipine
Nephrotoxicity of cephalosporins is accentuated by concurrent administration of loop diuretics.
What is a primary rest?
1) Additional support for indirect retention
2) The rest part of a direct retainer
3) A support for the denture base
4) A type of occlusal contact
A primary rest is part of the direct retainer that provides essential support in an RPD.
Which of the following statement is not true about diuretics:
1) Acetazolamide is a carbonic acid anhydrase stimulant
2) Thiazides act on cortical diluting segment of loop of Henle
3) Frusemide is a high ceiling diuretic
4) Spironolactone is an aldosterone antagonist
Acetazolamide is a carbonic acid anhydrase stimulant Acetazolamide, non-competitively (but reversibly) inhibits carbonic anhydrase in proximal tubular cells.
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.
What treatment is indicated for severe cases of disseminated intravascular coagulopathy (DIC)?
1) Increased platelet count
2) Supportive care and treating underlying causes
3) Administration of antibiotics
4) Hormonal therapy
Management of severe cases of DIC involves supportive care and addressing the underlying condition that has triggered the coagulopathy.
Where would you expect to find the mylohyoid muscle in relation to the periphery of a full lower denture?
1) Mandibular buccal in the midline
2) Mandibular lingual in the first premolar area
3) Mandibular lingual in the midline
4) Mandibular disto buccal area
ADC Test Answer: 2
The mylohyoid muscle forms the floor of the mouth and is located lingually, particularly in the area of the first premolars.
Supracrestal fibrotomy is done after correction of:
1) Crowding
2) Proclined incisors
3) Severely rotated teeth
4) Space closure
Solution Circumferential supracrestal fibrotomy (CSF) eliminates the pull of the stretched supracrestal gingival fibres which are the major cause of orthodontic relapse.
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 the effect on local anesthetic when used with sodium
bicarbonate ?
1 Increases speed and quality of anaestheisa
2 Decreases diffusion of the anaesthetic drug
3 Causes rapid elimination of the local anaesthetic
4 Decreases speed and quality of anaesthesia
The speed of onset of Anaesthesia is raised by Sodium bicarbonate and further
enhances its quality by elevating the intensity and duration of block.
Water on the surface of enamel has the following effect on polycarboxylate cements. 1. increases the setting time 2. decreases the opacity of the set cement 3. interferes with chemical adhesion of the cement to enamel 4. increases the acidity of the cement
Dental Material Answer: 3Water interferes with chemical adhesion of the polycarboxylate cement to enamel
What percentage of people in the UK drink excessively?
1) 20%
2) 30%
3) 40%
4) 50%
Approximately 50% of men and 30% of women in the UK exceed the recommended weekly alcohol guidelines.
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.
Ultrashort acting blocker most commonly used in anaesthesia is:
1) Esmolol
2) Nadolol
3) Propranolol
4) Atenolol
Esmolol is metabolized by RBC esterase, making it very short-acting with a half-life of only 8-10 minutes.
Which antibiotic can be safely prescribed to a patient who is on warfarin and is not allergic to penicillin?
1) Clindamycin
2) Erythromycin
3) Penicillin
4) Metronidazole
Penicillin is an appropriate choice for patients who are on warfarin and not allergic to penicillin.
All are non-verbal characteristics of aggressive behavior except:
1) Staring the person out.
2) Leaning forward or over.
3) Scowling when angry.
4) Sexual or racist remarks.
The given answer, "Sexual or racist remarks," is the only option that does not pertain to non-verbal characteristics of aggressive behavior. Staring the person out, leaning forward or over, and scowling when angry are all non-verbal cues that can indicate aggression. However, making sexual or racist remarks involves verbal communication rather than non-verbal cues.
What is the best treatment for recurrent pericoronitis?
1) Antibiotics
2) Extraction of the involved tooth
3) Root canal treatment of the third molar
4) Periodontal scaling and root planing
Extracting the impacted third molar is the best treatment for recurrent pericoronitis as it addresses the underlying cause of the infection.
Is measles caused by an RNA or DNA virus?
1) RNA virus
2) DNA virus
3) Both
4) Neither
Measles is caused by a single-stranded RNA virus, specifically the measles virus.
Morphine withdrawal is characterized by all except
1) Miosis
2) Yawning
3) Lacrimation
4) Diarrhea
Withdrawal of morphine is associated with marked drug-seeking behavior.
Physical manifestations of abstinence are - lacrimation, sweating, yawning, anxiety, fear, restlessness, gooseflesh, mydriasis, tremor, insomnia, abdominal colic, diarrhea, dehydration, rise in BP, palpitation and rapid weight loss.
Delirium and convulsions are not a characteristic feature (contrast barbiturates) and are seen only occasionally.
Cardi-ovascular collapse and fatality are rare if supportive measures are instituted.
9 months of age, is the usual eruption time for 1. primary mandibular canines 2. primary maxillary canines 3. primary maxillary first molars 4. primary lower lateral incisors
Dental Anatomy Answer: 49 months of age, is the usual eruption time for primary lower lateral incis
What is the recommended duration for sterilizing dental instruments in an
autoclave at 134°C (273.2°F)?
1) 3 minutes
2) 10 minutes
3) 15 minutes
4) 20 minutes
To effectively sterilize dental instruments, the autoclave must be
maintained at a temperature of 134°C (273.2°F) for at least 15 minutes to ensure
that all microorganisms are destroyed.
The concentration of ketones is increased in body due to: 1. Starvation 2. High fat diet 3. Diabetes mellitus
What is the predominant microorganism in deep dentinal caries?
1) Streptococcus mutans.
2) Lactobacillus species.
ADC Test Answer: 2
Lactobacilli are typically the predominant bacteria found in deep dentinal caries due to their ability to produce high levels of acid in the absence of oxygen.
Which antibiotic causes abdominal cramps in toxic doses?
1) Penicillin
2) Cephalosporins
3) Macrolides
4) Tetracyclines
Cephalosporins can cause gastrointestinal disturbances, including cramps, particularly at higher doses.
What is the critical pH for demineralization of carbonate-substituted
hydroxyapatite (CHA)?
1) 4.5
2) 5.5
3) 6.2
4) 7.0
The critical pH for CHA is 5.5, below which demineralization begins.
The principal internal retention for a Class V amalgam cavity preparation is
established at the
1) occluso-axial and gingivo-axial line angles.
2) mesio-axial and disto-axial line angles.
3) mesio-gingival and disto-gingival line angles.
4) none
These line angles provide resistance and retention in a Class V preparation by
preventing dislodgment of the restoration.
What is the function of glucosyltransferase (GTF) produced by Streptococcus
mutans?
1) Converts glucose to lactic acid
2) Assists in the removal of bacteria from the tooth surface
3) Helps in the formation of dentin
4) Converts sucrose to glucans and fructans
GTF is an enzyme that helps Streptococcus mutans adhere to the tooth surface by converting dietary sugars into sticky substances that form plaque.
Which cells are found in hepatic stomatitis?
1) Lymphocytes
2) Monocytes
3) Neutrophils
4) Macrophages
Neutrophils are typically present in hepatic stomatitis, indicating an acute inflammatory response, while multinucleate giant cells may also be observed in conditions like herpes labialis.
What is more likely to happen to an interproximal composite filling rather than amalgam?
1) Fracture
2) Polymerization shrinkage
3) Marginal leakage
4) Discoloration
Composite materials are more prone to polymerization shrinkage, which can lead to gaps and sensitivity compared to amalgam.
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.
In Angle’s class III malocclusion, mandibular anterior teeth will be
1) Proclined
2) Retroclined
3) Inclined
4) Any of the above
SOLUTION The reason is found in the concept of "dental compensation for skeletal discrepancy. This can occur naturally as well as being created by orthodontic camouflage treatment. In mandibular prognathism, for instance, as the individual grows the upper incisors tend to protrude while the lower incisors incline lingually. By the time growth is completed, the dental discrepancy usually is smaller than the jaw discrepancy. Tooth position has compensated at least partially for the jaw discrepancy.
Fastest route of absorption of local anaesthetic is?
1) Intercostal
2) Epidural
3) Brachial
4) Caudal
The fastest route for absorption of LA is intercostal block, due to close location of blood vessel around the nerve, so that is why LA are rapidly taken by in intercostal block.
After an amalgam restoration has been carved, it is important to lightly burnish the surface because burnishing 1. moves the amalgam in such a way as to fill in voids and submarginal areas 2. changes the contour of the restoration 3. increases the amalgam’s resistance to corrosion 4. contributes a dull luster to the surface
Dental Material Answer: 3After an amalgam restoration has been carved, it is important to lightly burnish the surface because burnishing increases the amalgam’s resistance to corrosion
Which is the most common jaw cyst in the UK?
1) Dentigerous cyst
2) Radicular cyst
3) Odontogenic keratocyst
4) Nasopalatine duct cyst
The radicular cyst is the most prevalent type of jaw cyst, commonly associated with non-vital teeth.
The use of a reservoir on the sprue of a wax pattern decreases
1) volumetric changes in the casting.
2) casting porosity from inclusion of gases.
3) casting porosity from inclusion of foreign bodies.
4) casting porosity during solidification
A reservoir serves as a storage area for molten material and allows for a
consistent flow of metal into the mold during the casting process. This helps to
fill in any shrinkage that occurs during cooling and solidification, thereby
reducing the formation of porosity defects in the final casting.
Which immunoglobulin is present following a bacterial and viral infection?
1) IgA
2) IgD
3) IgM and IgG
4) IgE
Both IgM and IgG are present during and following infections; IgM appears first, while IgG is the most abundant antibody in circulation post-infection.
Which anesthetic method is generally avoided in patients with certain neurological conditions?
1) Topical anesthetic
2) Inhalation sedation
3) Intravenous sedation
4) Local anesthetic
Intravenous sedation can present risks for patients with neurological conditions due to the potential for respiratory depression and impaired airway reflexes.
What is the primary risk associated with the use of nitrous oxide in a dental practice? 1) Allergic reactions 2) Environmental pollution 3) Potential for abuse and addiction 4) Exposure to infectious agents
Occupational Hazards Answer: 3Nitrous oxide can be misused, leading to potential abuse and addiction, making proper ventilation and safety protocols essential.
In cases of suspected abuse or neglect, dental professionals should:
1) Keep detailed records of injuries and treatment
2) Ask leading questions to determine the cause of injuries
3) Diagnose the patient with abuse or neglect
4) Treat the injuries and ignore the potential causes
Dental professionals should maintain thorough records of the patient's injuries and treatment, which may be valuable in legal proceedings.
The obturating material of choice for primary teeth following complete pulpectomy is:
1) Zn phosphate cement and formocresol combination paste
2) Quick setting hydroxide cement
3) Zinc oxide and eugenol cement
4) Gutta-percha
ADC Test Answer: 3
Zinc oxide eugenol cement (ZOE) is preferred for obturation in primary teeth due to its good sealing properties and resorbability, which is important for the eventual eruption of the succedaneous permanent tooth.
Which type of headgear is most appropriate for the management of a 10 year old patient with an increased lower third of the face, incompetent lips, an Angle Class II malocclusion and vertical maxillary excess?
1) High-pull.
2) Cervical.
3) Combination.
4) Protraction.
The high-pull headgear is used in orthodontics to exert a force on the upper
jaw, pulling it backward and upward. This action aims to correct the vertical
excess and improve the skeletal relationship between the maxilla and the
mandible, thus reducing the overjet and improving the overall facial profile. The high-pull mechanism targets the upper molars and can also help to control
the growth of the upper jaw, guiding it into a more favorable position. It is
often used in growing patients to take advantage of their developing
craniofacial structures.
2) Cervical headgear, on the other hand, is typically used to correct a Class II
malocclusion by providing a downward and backward force on the upper molars. However, it does not have the vertical component needed to address the excessive
vertical growth of the maxilla in this case.
3) Combination headgears can also be used for Class II corrections but may not
be as efficient as a high-pull in addressing the vertical excess specifically.
4) Protraction headgears are used to move the upper jaw forward to correct Class
III malocclusions, where the lower jaw is more prominent. Since the patient has
a Class II malocclusion, this would not be the correct type of headgear.
What is the purpose of using articulating paper during a stainless steel crown procedure?
1) To remove caries.
2) To reduce occlusal surface.
3) To check occlusion.
4) To mix cement.
Articulating paper is used to check occlusion during a stainless steel crown procedure.
For a woman with a hiatus hernia and tooth surface loss, what is the best treatment option when surgery isn't an option?
1) Medication
2) Dietary advice
3) Occlusal splint
4) Regular dental check-ups
Dietary modifications can help manage symptoms related to hiatus hernia and minimize further tooth erosion while medical management provides additional support.
Chlortetracycline acts by interfering with protein synthesis on bacterial but not mammalian ribosomes
In an average child the mixed dentition period is from 1. 10 years to 25 years 2. 4 yrs to 12 yrs 3. 8 yrs to 17 yrs 4. 6 yrs to 13 years
Dental Anatomy Answer: 4In an average child the mixed dentition period is from 6 yrs to 13 y
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 NOT a benefit of using computerized dental records?
- Enhanced data security
- Reduced need for physical storage space
- Increased likelihood of errors and illegibility
- Improved efficiency in retrieving patient information
Computerized records generally reduce errors and improve legibility compared to handwritten notes.
Which of the following is NOT a principle of biomedical ethics?
1) Autonomy
2) Beneficence
3) Nonmaleficence
4) Probity
The four main principles of biomedical ethics are autonomy,
beneficence, nonmaleficence, and justice. Probity is a term that relates to
integrity and honesty, which are important in professional ethics, but it is not
one of the four fundamental principles.
What is the typical duration of pH recovery in the oral cavity after
exposure to sugars or acids?
1) 10 minutes
2) 30 minutes
3) 1 hour
4) 24 hours
Saliva's natural buffering capacity typically allows for pH recovery in the oral cavity within 30 minutes after exposure to acids or sugars. However, this can vary based on individual factors and the presence of protective agents like fluoride.
Which of the following shows highest permanent deformation following strain in compression :
1) Polysulphide impression material
2) Polyether impression material
3) Condensation silicones
4) Addition silicones
For permanent deformation following strain in compression, ranking is mentioned below: Polysulfide > polyethers > condensation silicone > addition silicone
A lingual approach for a conservative Class III preparation for a composite
resin requires
1) a retentive internal form.
2) parallelism of the incisal and gingival walls.
3) maintenance of the incisal contact are1)
4) All of the above.
When preparing a Class III cavity using a lingual approach, several factors must be considered to ensure the success of the restoration:
- A retentive internal form: The preparation must have features that provide retention for the composite material, preventing it from dislodging over time.
- Parallelism of the incisal and gingival walls: Maintaining parallel walls helps in achieving a proper fit for the composite material and ensures that the restoration is stable and aesthetically pleasing.
- Maintenance of the incisal contact area: Preserving the incisal contact is crucial for maintaining the functional and aesthetic aspects of the tooth, as it helps in proper occlusion and prevents shifting of adjacent teeth.
What is the most common microorganism found in infected root canals?
1) Streptococcus viridans.
2) Staphylococcus aureus.
3) Lactobacilli.
4) Enterococci.
E. Staphylococcus albus.
ADC Test Answer: 1
Streptococcus viridans is commonly found in infected root canals due to its ability to thrive in the anaerobic environment and form a significant part of the oral flora.
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
Which local anesthetic is known for its cardiotoxic effects?
1) Lidocaine
2) Bupivacaine
3) Mepivacaine
4) Articaine
Bupivacaine is a long-acting local anesthetic that has been associated with cardiotoxicity, making it important to use with caution.
Which of the following is considered a biological hazard in a dental practice? 1) Chemical spills 2) Noise from dental equipment 3) Bloodborne pathogens 4) Ergonomic strain
Occupational Hazards Answer: 3Biological hazards include exposure to infectious agents such as bloodborne pathogens (e.g., HIV, Hepatitis B and 3) that can pose risks to dental professionals.
Which one of the following is true about oral hairy leukoplakia?
1) Associated with HIV virus infection and is commonly seen on the dorsal of the tongue
2) Associated with HIV virus infection and is commonly seen on the lateral side of the tongue
3) Usually caused by Candida species
4) Always associated with trauma to the lateral side of the tongue
ADC Test Answer: 2
Oral hairy leukoplakia is typically associated with Epstein-Barr virus and is most commonly found on the lateral borders of the tongue in immunocompromised individuals.
The estimated percentage of the population with herpes simplex virus
type 1 (HSV-1) infection is:
1) 30%
2) 50%
3) 80%
4) 90%
Herpes simplex virus type 1 (HSV-1) is a highly prevalent virus that causes oral herpes, commonly known as cold sores. The World Health Organization (WHO) estimates that approximately 67% of the global population under the age of 50 has an HSV-1 infection. This percentage varies by region, but in some developed countries, it can be as high as 80-90%. Most individuals are infected during childhood or early adulthood, and the virus remains dormant in the body, reactivating periodically to cause recurrent symptoms.
Stage of surgical anaesthesia is:
1) Stage I
2) Stage II
3) Stage III plane 2
4) Stage III plane 3
Stage III plane 3 is considered the stage of surgical anaesthesia because laryngeal reflex goes in this stage, and patient can be intubated.
A vitamin B12 deficiency may affect heme synthesis by reducing the concentration of which of the following? Choose the one best answer.
1) Acetyl-CoA
2) Succinyl-CoA
3) Glycine
4) Alanine
Vitamin B12 participates in two reactions in the body-conversion of homocysteine to methionine and conversion ofmethylmalonyl-CoA to succinyl-CoA. Methylmalonyl-CoA is produced via various amino acid degradation pathways, and from oddcarbon chain fatty acid oxidation.
Glycine is usually obtained from the diet, although in a B12 deficiency a functional folate deficiency may also develop, leading to an inhibition of serine hydroxymethyltransferase, the enzyme that converts serine to glycine, and requires free tetrahydrofolate.
Succinyl-CoA and glycine are the precursors for heme synthesis. A B12 deficiency would not inhibit the production of acetyl-CoA, succinate, or alanine.
What neurotransmitter is responsible for closing pre-capillary sphincters?
1) Acetylcholine
2) Serotonin
3) Nor-adrenaline
4) Substance P
Nor-adrenaline is responsible for vasoconstriction and can close pre-capillary sphincters, regulating blood flow.
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.
What characterizes the action of saliva on dental plaque?
1) It increases plaque pH immediately.
2) It has no effect on plaque acidity.
3) It dilutes and neutralizes plaque acidity.
4) It only coats teeth without affecting pH.
Saliva plays a crucial role in maintaining oral health by diluting and carrying away acid metabolites produced by plaque bacteria, thus helping to neutralize acidity and reduce the risk of caries development.
What is the best method for managing dental emergencies in gerodontology?
1) Immediate referral to a specialist
2) In-office emergency care
3) Prescribing pain medication
4) Encouraging self-management
Rapid assessment and treatment in the dental office is typically the best approach for managing dental emergencies in elderly patients.
What cement do you use to bond an alumina core ceramic crown?
1) Panavia
2) Resin modified glass ionomer cement
3) Zinc phosphate
4) Glass ionomer cement
Panavia is a resin cement specifically designed for bonding ceramic restorations, providing strong adhesion to alumina cores.
What is the term for the risks that must be discussed with a patient before
treatment?
1) Minor risks
2) Unlikely risks
3) Insignificant risks
4) Material risks
Material risks are those that are most relevant to the patient and should be disclosed prior to treatment.
What antibiotic is used to manage a superinfected herpetic lip lesion?
1) Ciprofloxacin
2) Metronidazole
3) Cefuroxime
4) Amoxicillin
Metronidazole is effective against anaerobic bacteria and is often used for superinfected lesions, including herpetic lesions.
Approximately 3 hours following a well-balanced meal, blood levels of which of the following are elevated?
1) Fatty acids
2) Glucagon
3) Glycerol
4) Chylomicrons
Following digestion, the products of digestion enter the bloodstream.
These include glucose, amino acids, triacylglycerides packaged into chylomicrons from the intestine, and very low density lipoproteins from the liver.
The hormone of anabolism, insulin, is also elevated because of the signaling of the glucose and amino acids in the blood, which allows release of insulin from the β-cells of the pancreas.
What type of respiratory protection is recommended for dental personnel
during aerosol-producing procedures?
1) N95 mask
2) Surgical mask
3) Powered air-purifying respirator (PAPR)
4) Full-face respirator
N95 masks are recommended for dental personnel during
aerosol-producing procedures as they provide a higher level of protection
against airborne particles compared to surgical masks. PAPRs and full-face
respirators may be used in certain situations, but N95 masks are sufficient for
most dental procedures.
Ethohepatazine is a chemical derivative of meperidine
A3 shades of composite resins should be light-cured in increments limited to a
maximum of
1) 0.50mm.
2) 1.00mm.
3) 1.50mm.
4) 2.00mm.
To ensure complete curing and avoid inadequate polymerization, A3 shades should be cured in layers no thicker than 2mm.
At which angle should the external surface of proximal cavity walls in a Class II preparation for amalgam be finished?
1) An acute angle
2) An obtuse angle
3) A right angle
4) An angle of 45°
An obtuse angle is preferred for amalgam preparations to enhance the retention and resistance form of the restoration.
What is the primary purpose of informed consent in dentistry?
1) To protect the dentist from legal liability
2) To ensure the patient understands and voluntarily agrees to the proposed
treatment
3) To provide the patient with financial information about the treatment
4) To obtain the patient's signature for insurance purposes
Informed consent is a process where the dentist communicates with the patient about the diagnosis, the risks and benefits of the proposed treatment, alternative treatment options, and the patient's right to refuse or withdraw consent. The primary goal is to empower the patient to make an informed decision regarding their dental care.
Which of the following is NOT a common consequence of untreated dental caries in
older adults?
1) Pain
2) Tooth loss
3) Cancer
4) Infection
Although untreated dental caries can lead to severe complications
like pain and infection, it does not directly cause cancer.
Which of these is the ideal appliance for correction of posterior cross bite due to digit sucking habit?
1) Tongue spikes
2) Hay rakes
3) Maxillary lingual arch with palatal crib
4) Quad helix
Classification of appliances for thumb-sucking
1.
a. Tongue spikes
b. Tongue guard
c. Spurs/rake
2 Fixed appliances
a. Quad helix
b. Hay rakes
c. Maxillary lingual arch with palatal crib
The ideal appliance to correct posterior cross-bite caused due to digit sucking is Quad Helix. It is a lingual arch which is adjustab and needs very little patient cooperation because it is fixed and is reliable and easy to use.
Which is NOT TRUE in relation to the prescription of 5mg or 10mg of diazepam for sedation?
1) Patient commonly complains of postoperative headache
2) An acceptable level of anxiolytic action is obtained when the drug is given one hour preoperatively
3) There is a profound amnesic action and no side effects
4) Active metabolites can give a level of sedation up to 8 hours post-operatively
ADC Test Answer: 3
Although diazepam can cause amnesia, it is incorrect to say there are no side effects; benzodiazepines are known for various side effects including confusion and sedation.
What is the appropriate dosage of epinephrine for an 8-year-old child experiencing anaphylaxis?
1) 0.15 ml of 1:1000
2) 0.3 ml of 1:1000
3) 0.5 ml of 1:1000
4) 0.05 ml of 1:1000
For children experiencing anaphylactic shock, the common practice is to administer 0.15 ml of 1:1000 epinephrine, dependent on their weight and severity of symptoms.
Site of alpha-oxidation of fatty acid Is:
alpha-oxidation of fatty acid occurs in Mitochondria
Patients with cerebral palsy may exhibit which of the following oral manifestations?
1) Limited mouth opening and difficulty with oral hygiene
2) Excessive salivation and speech impairment
3) Difficulty swallowing and risk of aspiration
4) All of the above
Cerebral palsy can affect muscle control and coordination, leading to challenges in maintaining good oral hygiene, difficulty with speech and swallowing, and increased risk of aspiration.
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.
What does N1 indicate in the TNM classification?
1) No regional lymph node metastases
2) One ipsilateral node < 3 cm diameter
3) Ipsilateral or contralateral nodes 3-6 cm diameter
4) Lymph node metastasis > 6 cm diameter
N1 indicates the presence of one regional lymph node that is less than 3 cm in diameter, which is significant for staging the extent of cancer spread.
Which material is more hydrophilic: PVS or polyether?
1) PVS
2) Polyether
3) Both are equally hydrophilic
4) Neither is hydrophilic
Polyether is generally considered more hydrophilic compared to PVS (polyvinyl siloxane). Hydrophilic materials, like polyether, readily absorb water or are soluble in water, which can be advantageous in certain dental applications, such as improving the quality of impressions in moist environments or enhancing the bond between the material and the oral tissues. PVS, on the other hand, is a type of elastomeric impression material that is less hydrophilic but more accurate and easier to handle.
What is the most commonly used topical anesthetic in dentistry?
1) Lidocaine
2) Benzocaine
3) Articaine
4) Procaine
Benzocaine is frequently used as a topical anesthetic in dentistry due to its effectiveness and rapid onset of action.
What is the most common reason for the failure of an approximal amalgam filling?
1) Marginal leakage
2) Secondary caries
3) Isthmus fracture
4) Overhang
Isthmus fractures are a common reason for the failure of approximal amalgam fillings, often due to stress and occlusal forces.
What is the role of sIgA in the protection against dental caries?
1) It directly neutralizes bacterial acids.
2) It promotes the growth of beneficial bacteria in the oral cavity.
3) It binds to bacteria and prevents them from adhering to tooth surfaces.
4) It provides structural support to tooth enamel.
Secretory immunoglobulin A (sIg1) is a salivary antibody that can bind to cariogenic bacteria, limiting their ability to colonize and produce acids on the tooth surface.
Continuous education and training for dental staff on infection control practices are vital for maintaining a safe environment and reducing the risk of infection.
When is the MMR vaccine typically administered?
1) At birth and 6 months
2) At 1 year and again at 4 years
3) At 2 years and 5 years
4) At 6 months and 1 year
The MMR (measles, mumps, rubella) vaccine is usually given at 1 year of age and again at 4 years of age to ensure adequate immunity.
While doing preparation for an FMC crown prep on tooth 16 in a 20-year-old man, a pinpoint pulp exposure occurred. How would you best manage the situation?
1) Do DPC immediately under rubber dam then tell the patient about the situation
2) Tell the patient immediately and do pulpotomy
3) Start RCT then describe the situation to the patient
4) Tell the patient that you have encountered an inadvertent incident while preparing and refer him to a specialist
ADC Test Answer: 1
Direct Pulp Capping (DPC) is the most appropriate management strategy for a small pinpoint pulp exposure.
What is the correct order for removing PPE after treating a patient?
1) Gloves, mask, gown
2) Gown, gloves, mask
3) Mask, gown, gloves
4) Gloves, gown, mask
The correct order for removing PPE is to first remove and dispose
of the gloves, then the gown, and finally the mask to prevent contact with
potentially contaminated surfaces.
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 retention period for dental records according to most dental boards? 1) 2 years 2) 5 years 3) 10 years 4) Varies by country/state
Dental Records Answer: 4The retention period for dental records is typically dictated by each country's or state's dental board. In many jurisdictions, the minimum retention period is 10 years after the patient's last appointment, but it can vary. For example, in some states in the U.S., the requirement may be 7 or 10 years, while in others it can be indefinitely if the patient is a minor. It's important for dental offices to follow the specific guidelines set by their local regulatory bodies.
Ultrashort acting blocker most commonly used in anaesthesia is:
1) Esmolol
2) Nadolol
3) Propranolol
4) Atenolol
Esmolol is metabolized by RBC esterase, making it very short acting with a half-life of only 8-10 minutes.