Dentist Abroad
Which of the following is NOT an infrahyoid muscle?
1) Digastric
2) Mylohyoid
3) Geniohyoid
4) Omohyoid
The infrahyoid muscles are the mylohyoid, hyoglossus, stylohyoid,
thyrohyoid, and omohyoid muscles. The infrahyoid muscles are a group of muscles found in the neck that are
situated below the hyoid bone.
2) Mylohyoid: This muscle runs obliquely from the body and greater horn of the
hyoid bone to the inner surface of the mandible. It is involved in elevating the
hyoid bone, which occurs during swallowing and tongue movement.
3) Geniohyoid: The geniohyoid muscle originates from the lower mental spine and
genial tubercle of the mandible and inserts into the body and greater horn of
the hyoid bone. It plays a role in depressing the hyoid bone, which occurs
during swallowing and tongue protrusion.
4) Omohyoid: The omohyoid muscle originates from the scapula and passes upward
and medially to insert into the lower part of the hyoid bone. It also helps in
depressing the hyoid bone and can assist in raising the larynx during
swallowing.
The Digastric muscle is not an infrahyoid muscle. The digastric muscle is
actually a suprahyoid muscle, which means it is located above the hyoid bone. It
has two bellies: the anterior belly originates from the digastric fossa of the
mandible and inserts into the hyoid bone, while the posterior belly originates
from the mastoid process of the temporal bone and inserts into the hyoid bone. The digastric muscle functions in opening the jaw and raising the hyoid bone
during swallowing.
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.
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.
The sounds "S," "Z," and "che" are produced when:
1) The teeth are widely apart
2) The teeth barely touch
3) The lips are tightly closed
4) The tongue is elevated
The sounds "S," "Z," and "che" are sibilant sounds, which are produced by forcing air through a narrow space between the tongue and the teeth. The teeth do not completely occlude (touch) during the articulation of these sounds. Instead, they are positioned in a way that allows a thin stream of air to flow, creating the characteristic hissing sound. This requires precise coordination between the tongue and the teeth, particularly the tongue and the alveolar ridge (the bony ridge behind the upper incisors).
Which of the following local anaesthetic is sympathomimetic:
1) Cocaine
2) Procaine
3) Lignocaine
4) Tetracaine
Cocaine is a sympathomimetic local anaesthetic and thus adrenaline should not be added to it.
The sulphur containing amino acid is: 1. Cystine 2. Proilne 3. Arginine 4. Isoleucine
Biochemistry Answer: 1Cystine is sulphur containing amino acid
Which antihypertensive class includes drugs that may cause gingival hyperplasia as a side effect?
1) Beta-blockers
2) ACE inhibitors
3) Calcium channel blockers
4) ARBs
Calcium channel blockers, such as Amlodipine, are associated with gingival hyperplasia.
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, as laryngeal reflexes are lost, allowing for intubation.
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.
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.
Surgical therapy, such as flap surgery, aims to expose root surfaces and deep
periodontal pockets.
This improves visibility and access for scaling, root planning, and debridement,
which are critical for removing the etiologic factors of periodontitis (e.g.,
plaque and calculus.
Eliminating these factors allows tissues to heal and reduces pocket depths.
A 50 kg man with severe metabolic acidosis has the following parameters, pB 7.05, pCO2 12 mm/lg, pO2 108 mmHg, BCO) 5 mEq/L, base excess -30 mEq/L. The appropriate quantity of sodium bicarbonate that he should receive in half hour is:
1) 250 mEq
2) 350 mEq
3) 500 mEq
4) 750 mEq
Local Anesthesia Answer: 1
250 mEq Sodium bicarbonate requirement is calculated by the formula: 0.3 x body weight x base excess (deficit) = 0.3 x 50 x 30 = 500 mEq. Half correction should be done i.e., 500/2 = 250 mEq.
For a pigmented fissure, what is the best way to diagnose caries?
1) Visual examination
2) Radiographic examination
3) Investigate the area with a round bur
4) Transillumination
Investigating the area with a round bur allows for direct assessment of the fissure and any underlying carious lesions.
What is the role of Campylobacter rectus in dental biofilm
metabolism?
1) It produces formate and hydrogen gas as metabolic byproducts.
2) It has no role in biofilm formation.
3) It is exclusively an aerobic organism.
4) It utilizes formate and hydrogen gas as energy sources.
Campylobacter rectus is capable of using formate and hydrogen gas as energy sources and electron donors for its metabolic activities, which contributes to its role in dental biofilm ecology and metabolism.
A tooth makes its appearance in the oral cavity usually when 1. all of the crown is completed 2. all of the root is completed 3. one half of the root is completed 4. one half of the crown is completed
Dental Anatomy Answer: 3A tooth makes its appearance in the oral cavity usually when one half of the root is completed
What is the primary goal of a dentist when treating a patient with a history of abuse or neglect?
1) To provide comprehensive dental care
2) To determine the cause of the patient's injuries
3) To provide psychological support and referrals
4) To gather evidence for legal proceedings
The primary goal of a dentist is to provide the best possible dental treatment to their patients, while also being sensitive to their history.
IN HEALTH EDUCATION PROGRAMME a group of 10 ppl r planning to speak on a topic of common interest. Which is the best ed. Approach
1.panel discussion
2.symposium
3.group discussion
4.workshop
Group discussion because participants get chances to express thier views Idea panel discussion : 4-8 people talk abt a topic in front of large group. symposium:series of speeches on a selected subject, no discussion. group discussion :considered a very effective method of health edu if the group consists of not less than 6 and not more than 20 persons. workshop:usually lasts for few days wher people get together and work in different groups and discuss problem of concern it can be called a problem solving method.
What is the minimum platelet level at which dental extractions can be safely performed?
1) 50 x 109/L
2) 75 x 109/L
3) 100 x 109/L
4) 150 x 109/L
Surgical procedures can be performed if platelet levels are above 50 x 109/L.
The principle of beneficence obliges dentists to:
1) Only provide treatments that are profitable
2) Act in the best interest of the patient
3) Follow the latest trends in dental technology
4) Delegate all complex procedures to specialists
Beneficence is the ethical principle that requires dentists to act
in the best interest of their patients, promoting well-being and providing
competent and appropriate care. It does not relate to profit, trends, or
delegation of duties but rather to the moral obligation to do good for the
patient.
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.
Which type of patient is most likely to benefit from pre-operative sedation?
1) A patient with no previous dental experience
2) A patient with a high level of anxiety related to dental treatment
3) A pediatric patient
4) A patient who prefers general anesthesia
Patients with significant anxiety may benefit greatly from pre-operative sedation to make their experience more comfortable.
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.
Glycine is a Glycogenic amino acid, only
A positive and prolonged reaction to a heat stimulus indicates that the pulp is
1) necrotic
2) in an early hyperemic state.
3) normal.
4) irreversibly damaged
A positive and prolonged reaction to a heat stimulus typically indicates that the pulp is irreversibly damaged. This prolonged response suggests that the nerve fibers are still responding to the stimulus, but the damage is significant enough that the pulp is not capable of healing, indicating a need for endodontic treatment.
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.
Which of the following is LEAST likely to cause pain?
1) Carious pulp exposure.
2) Chronic hyperplastic pulpitis (pulp polyp).
3) Acute pulpitis.
4) Apical periodontitis.
Chronic hyperplastic pulpitis, also known as pulp polyp, typically occurs in teeth with large carious lesions and is characterized by the presence of a proliferative mass of inflamed pulp tissue. While it can be associated with some discomfort, it is generally less painful than acute pulpitis or apical periodontitis, as the pulp tissue is often necrotic and the inflammatory response is more chronic and less acute.
The position of the cusps of the maxillary first premolar is:
1) Distally positioned
2) Mesially positioned
3) Centrally positioned
4) Lingually positioned
ADC Test Answer: 2
In occlusion, the cusp tips of the maxillary first premolar are slightly mesially positioned, which affects alignment and functional performance.
The most common failure in constructing porcelain-to-metal restorations is due to:
1) Improper metal framework
2) Rapid heating
3) Poor porcelain layering
4) Inadequate glazing
ADC Test Answer: 1
The failure of porcelain-to-metal restorations frequently arises from a poorly constructed metal framework, which compromises the bond between the two materials.
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.
Your employer is attempting to update office sterilization procedures; what would you recommend as the BEST method to verify that sterilization has occurred?
1) Use color change tape in each load and spore tests weekly
2) Use indicator strips in each load and color change tape on each package
3) Use indicator strips daily and spore tests weekly
4) Use color change tape daily and spore tests monthly
ADC Test Answer: 3
Color-change tape each load + weekly spore tests – Tape only shows the package was exposed to heat, not that sterilization was achieved. Indicator strips each load + color-change tape each package – No spore testing included → cannot verify sterilization. Indicator strips daily + spore tests weekly – Includes both chemical indicators and weekly spore tests → best match. Color-change tape daily + spore tests monthly – Monthly spore testing is inadequate.
The inverse Square Law is concerned with the intensity of radiation; using type D film of 200mm target to film distance, the exposure time was 0.25s. What would be the exposure for the same situation with 400mm target to film distance?
1) 0.5s
2) 1.0s
3) 2.0s
4) 0.25s
ADC Test Answer: 2
According to the inverse square law, doubling the distance from the radiation source results in a fourfold decrease in intensity, thus requiring four times the exposure time ($I propto frac{1}{d^2}$).
If a 4th root canal is present in a maxillary 1st molar, it will likely be located in which of the following roots?
1) Mesiolingual
2) Mesiobuccal
3) Distolingual
4) Distofacial
Well over 50% of maxillary 1st molars have two canals in the mesiobuccal root.
There are usually 3 roots and 4 canals in a maxillary 1st molar.
The fourth canal, the mesiolingual canal, is also referred to as: the accessory mesiobuccal canal, mesiocentric, mesiopalatal canal or MB2.
It is usually tough to find MB2 through clinical inspection and it is not obvious on a radiograph. A dentist should expect it is present before beginning a root canal on the first maxillary molar.
Which of the following practices can help reduce the risk of cross-contamination in a dental office? 1) Using the same gloves for multiple patients 2) Disinfecting surfaces and instruments between patients 3) Not wearing masks during procedures 4) Ignoring hand hygiene protocols
Occupational Hazards Answer: 2Regular disinfection of surfaces and instruments is essential for preventing cross-contamination and protecting both patients and dental staff.
A non-synovial joint with dense connective tissue between two bony surfaces is called?
1) Synchondrosis
2) Syndesmosis
3) Symphysis
4) Suture
Sutures are fibrous joints in the skull that are immovable and connected by dense connective tissue, whereas syndesmoses can allow slight movement.
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.
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.
What is the main goal when treating an anxious patient in dentistry?
1) To complete the treatment as quickly as possible
2) To utilize the maximum amount of sedation
3) To alleviate fear and build trust
4) To avoid all invasive procedures
The primary goal is to reduce anxiety, thereby fostering a trusting relationship that improves the overall treatment experience.
Highest analgesic effect is a feature of:
1) Ketamine
2) Thiopentone
3) Propofol
4) Etomidate
Ketamine is a very potent analgesic, providing maximum analgesia among all IV anaesthetics.
What is the main ethical principle behind informed consent?
1) Non-maleficence (do no harm)
2) Beneficence (act in the patient's best interest)
3) Autonomy (respect for the patient's right to make decisions)
4) Justice (fair treatment of all patients)
Informed consent is based on the ethical principle of autonomy, which emphasizes the patient's right to make decisions about their own health care. It is essential to respect and support the patient's decision-making process.
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.
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.
The bull's eye type of appearance in IOPA (Intraoral Periapical radiograph) is
seen in:
1) Lingually placed mandibular third molar
2) Buccally placed mandibular third molar
3) Inverted mandibular third molar
4) Distoangular impaction
The bull's eye appearance on an IOPA radiograph is typically
associated with a lingually positioned mandibular third molar. This appearance
is due to the radiographic projection of the tooth and surrounding structures,
which can create a characteristic circular pattern that resembles a bull's eye.
A patient on diuretics may experience which oral side effect? 1) Xerostomia (dry mouth) 2) Gingival hyperplasia 3) Stomatitis 4) Facial swelling
Pathology and Medicine Answer: 1Diuretics can lead to xerostomia, commonly observed in patients on long-term antihypertensive therapy.
what %age of NaF is used in iontophoresis:
1.1%
2.2%
3.3%
4.4%
2% NaF is used in iontophoresis. This fluoride treatments brings about granular precipitation in dentinal tubules and reduces tubular diameter.
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 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.
Iodine is a characteristic component of 1. Cysteine 2. Tyrosine 3. Thyroxine 4. Thiamin
Biochemistry Answer: 3odine is a characteristic component of Thyroxine
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
Which of the following drugs can cause methemoglobinemia?
1) Lidocaine
2) Procaine
3) Prilocaine
4) Bupivacaine
Prilocaine is a local anesthetic that can cause methemoglobinemia.
Which nerve is located between the palatoglossus and palatopharyngeus
muscles?
1) Cranial nerve 9
2) Cranial nerve 7
3) Cranial nerve 10
4) Cranial nerve 12
The facial nerve (CN 7) passes between the palatoglossus and
palatopharyngeus muscles in the pterygopalatine fossa.
The largest and longest root canal of the maxillary second molar is the 1. lingual 2. mesiobuccal 3. distobuccal 4. distal
Dental Anatomy Answer: 1The largest and longest root canal of the maxillary second molar is the lingual
What is the characteristic radiographic feature of distoangular impaction?
1) The tooth is horizontally positioned
2) The tooth is tilted towards the ramus
3) The tooth is tilted towards the tongue
4) The tooth is completely embedded in the bone
Distoangular impaction occurs when the tooth is tilted towards the ascending ramus of the mandible, making it challenging to remove due to the need for significant bone removal.
A picture of the gingiva of a black person with melanin pigmentation and a white line across the central incisors. What is the cause of the white line?
1) Amelogenesis imperfecta
2) Dentinogenesis imperfecta
3) Hypo-mineralization
4) Fluorosis
The white line is likely due to hypo-mineralization, which can occur due to various factors, including nutritional deficiencies or environmental influences.
All of the following statements are true regarding the cephalosporin antibiotics except 1. they are bactericidal 2. they are ineffective against gram negative microorganisms 3. they are potentially cross allergenic with penicillin 4. they are resistant to penicillinase
Pharmacology Answer: 2cephalosporin are bactericidal, are potentially cross allergenic with penicillin, resistant to penicillinase
What should a healthcare provider do if a patient refuses a recommended
treatment?
1) Ignore the refusal and proceed with treatment
2) Document the refusal and provide information on the consequences
3) Force the patient to comply
4) Refer the patient to another provider
It is important to document the patient's informed refusal and ensure they understand the potential consequences of not proceeding with the treatment.
Which of the following is main cause of pain during pulpal injury progression
1) increased vascular permeability
2) decreased threshold of nerve fibers to pain
3) arteriolar dilatation
4) decrease pressure
Increased vascular permeability: When the dental pulp becomes injured
or inflamed, the blood vessels in the pulp dilate and become more permeable.
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 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.
Which of the following has highest minimum alveolar concentration?
1) Halothane
2) Isoflurane
3) Methoxyflurane
4) Nitrous oxide
Nitrous oxide has the highest MAC value of 104 among all inhalational anaesthetics.
What is least important for the success of a post?
1) Diameter
2) Material
3) Luting agent
4) Length
While the luting agent is important, the diameter, material, and length of the post are more critical factors influencing the success of the post in retaining the restoration.
Which muscles are primarily used in swallowing?
1) Masseter and temporalis
2) Genioglossus and palatoglossus
3) Buccinator and orbicularis oris
4) Sternocleidomastoid and trapezius
The genioglossus and palatoglossus muscles play significant roles in the swallowing process by controlling the position of the tongue and the soft palate.
The most mineralized part of the dentin is:
1) Peritubular dentin
2) Intertubular dentin
3) Primary dentin
4) Secondary dentin
ADC Test Answer: 1
Peritubular dentin is highly mineralized and surrounds the dentinal tubules, contributing significantly to the strength of the dentin.
For carious lesions, which diagnostic method is appropriate?
1) Carious halfway through enamel on proximal surface – Bitewing
2) Carious halfway through enamel on occlusal surface – Visual exam
3) Carious halfway through dentine not cavitated – Wet surface
4) Stained fissure – Bitewing and visual exam
Each diagnostic method is appropriate for the specific type of carious lesion described.
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.
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 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.
What defines the etiology of localized alveolar osteitis?
1) Bacterial infection
2) Oestrogen effects from medications
3) Excessive local fibrinolytic activity
4) Poor oral hygiene
Localized alveolar osteitis is often attributed to excessive fibrinolytic activity following trauma to the alveolar bone, rather than solely due to bacterial infections.
Ante’s Law states that:
1) The pericemental area of the abutment teeth must exceed that of the replaced tooth
2) The abutments must be anatomically similar to the replaced tooth
3) The root length of abutments should be equal to the replaced tooth
4) There should be no mobility in abutment teeth
ADC Test Answer: 1
Ante's Law asserts that the combined periodontal support of the abutment teeth must be greater than that of the teeth being replaced to ensure stability.
Which one of the following is the major disadvantage of stone dies used for crown fabrication?
1) They lack accurate reproduction of surface details
2) Their overall dimensions are slightly smaller than the original impression
3) The strength of the stone
4) The hazard of aspiration of toxic materials during trimming of the dies
ADC Test Answer: 2
One of the notable disadvantages of some types of stone dies is that they can shrink upon setting or due to dehydration, leading to dimensions that are slightly smaller than the original impression, impacting the fit of the final restoration.
What is the best treatment option for replacing a missing lateral incisor?
1) Fixed partial denture
2) Removable partial denture
3) Dental implant
4) Orthodontic treatment
A dental implant is often the best option for replacing a missing lateral incisor, providing a stable and aesthetic solution.
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.
Most potent opioid:
1) Fentanyl
2) Alfentanil
3) Buprenorphine
4) Sufentanil
Sufentanil is the most potent opioid, being 500-1,000 times more potent than morphine.
First sign of complication of anaesthesia:
1) Tachycardia
2) Bradycardia
3) Hypertension
4) Convulsions
Tachycardia is the first sign of many complications seen in anaesthesia.
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.
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 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 recommended position for a pregnant patient during oral surgery to avoid pressure on the inferior vena cava?
1) Supine position
2) Semi-reclined position
3) Sitting position
4) Left lateral position
The patient should be placed in the left lateral position to reduce pressure on the inferior vena cava and ensure adequate venous return, preventing hypotension.
Angiotensin-converting enzyme (ACE) inhibitors reduce blood pressure by:
1) Increasing heart rate
2) Blocking calcium channels
3) Inhibiting angiotensin II formation
4) Blocking aldosterone receptors
ACE inhibitors block the conversion of angiotensin I to angiotensin II, reducing vasoconstriction and lowering blood pressure.
What is the sensory nerve supply to the temporalis muscle?
1) V2
2) V3
3) Facial nerve
4) Glossopharyngeal nerve
The temporalis muscle receives both sensory and motor innervation from the mandibular branch of the trigeminal nerve (V3).
For patients with vision impairments, what is a useful strategy for effective dental communication?
1) Maintaining a silent environment
2) Verbal acknowledgment of actions
3) Rapid speech to complete the consultation quickly
4) Avoiding physical guidance
Verbal acknowledgment helps build trust and keeps the patient informed about what is happening during the visit, reducing anxiety and enhancing cooperation.
The pain after the application of force after activation during fixed mechanotherapy is likely to disappear within how much time ?
1) 24 hours
2) 2 to 4 days
3) 4 to 8 days
4) 10 days
SOLUTION If heavy pressure is applied to a tooth, pain develops almost immediately as the PDL is literally crushed. If appropriate orthodontic force is applied, the patient feels little or nothing immediately.
There is no excuse for using force levels for orthodontic tooth movement that produce immediate pain of this type.
The pain typically lasts for 2 to 4 days, and then disappears until the orthodontic appliance is reactivated. At that point, a similar cycle may recur, but for almost all patients, the pain associated with the initial activation of the appliance is the most severe.
What causes amalgam expansion?
1) Excess mercury
2) Sufficient ventilation
3) Moisture contamination
4) Inadequate mixing
Moisture during the mixing and placement of amalgam can result in expansion, particularly with zinc-containing alloys.
Most potent inhaled anaesthetic is:
1) Halothane
2) Isoflurane
3) Sevoflurane
4) Desflurane
Halothane is the most potent inhalational agent with a MAC of 0.74%.
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.
Which of the following is NOT a common occupational hazard for dentists and dental staff?
1) Exposure to ionizing radiation
2) Risk of infection from bloodborne pathogens
3) Development of musculoskeletal disorders
4) High risk of developing allergies to dental materials
While dentists and dental staff are indeed at risk of developing allergies to certain dental materials, especially those with latex allergies due to repeated exposure to gloves and other latex products, it is not a common occupational hazard compared to exposure to ionizing radiation from dental x-rays, risk of infection from bloodborne pathogens due to the nature of dental procedures, and the high prevalence of musculoskeletal disorders due to the ergonomic challenges of the work.
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.
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.
Which of the following drugs is known for potentially causing gingival hyperplasia?
1) Phenytoin
2) Aspirin
3) Metoprolol
4) Clindamycin
Phenytoin is associated with gingival hyperplasia as a side effect, which is characterized by the overgrowth of gum tissue.
A 58-year-old male presents complaining of sharp pain lasting 30 minutes in his upper left molar region. This pain is elicited by cold stimuli. What is the most likely cause of the pain?
1) Acute/reversible pulpitis
2) Dentin sensitivity
3) Chronic/irreversible pulpitis
4) Periapical periodontitis
The sharp pain triggered by cold that persists post-stimulation indicates that the pulp is most likely irreversibly inflamed.
Surface activity and low toxic potential?
1) Cocaine
2) Bupivacaine
3) Benzocaine
4) Procaine
Benzocaine is the correct answer because it has surface activity and low toxic potential.
What is the GDC guideline for recording patient consent?
- Verbal consent is sufficient if witnessed by a dental nurse
- Consent must be recorded in the patient's own words
- Written consent is mandatory for all treatments
- Consent must be obtained before every appointment
The GDC guideline emphasizes that consent should be recorded in the patient's own words to ensure that the patient's understanding and agreement to the treatment plan are clearly documente4) This is a critical aspect of informed consent and patient-centered care.
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.
Which component of a partial denture framework provides the best indirect retention?
1) Rest.
2) Circumferential clasp.
3) Lingual strap.
4) Proximal plate.
FPD and RPD Answer: 1Rests prevent rotational forces around the fulcrum line, contributing to effective indirect retention. They stabilize the framework and minimize dislodgement.
Which of the following is NOT a component of informed consent in dentistry?
1) Explanation of the diagnosis
2) Description of the proposed treatment
3) Discussion of the risks and benefits of the treatment
4) Patient's agreement to pay for the treatment
While financial considerations are important in the overall decision-making process, informed consent specifically pertains to the patient's understanding and agreement to the medical aspects of the treatment, not the financial agreement.
What is the best description of the morphology of periodontal ligament fibers?
1) Elastic
2) Striated
3) Non-striated
4) Wavy
The fibers of the periodontal ligament exhibit a wavy morphology, which allows for flexibility and resilience to the stresses placed on them by occlusion.
What is the role of saliva in the oral cavity?
1) Lubrication of food
2) Protection against bacteria
3) pH buffering
4) All of the above
Saliva plays multiple roles in the oral cavity, including lubrication, antimicrobial action, and buffering of pH, which helps maintain oral health.
Burs used for refinement and finishing of composites:
1) Fine carbide.
2) Diamond.
3) A and B.
4) Discs.
ADC Test Answer: 3
Refinement and finishing of composites often require a combination of both fine carbide and diamond burs, as each serves distinct functions in achieving a polished finish.
An alpha helix of a protein is most likely to be disrupted if a missense mutation introduces the following armino acid within the alpha helical structure:
1. Alanine.
2. Aspartic acid.
3. Tyrosine.
4. Glycine.
Glycine and proline introduce a bend in structure of protein, hence alpha helix disrupted
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.
If the sealant or bonding agent is not placed on part of the enamel that has been etched by an acid solution, you would expect:
1) Arrest of enamel caries by organic sulfides
2) The enamel to return to normal within 7 days
3) Continued enamel demineralization in the etched area
4) Slight attrition of the opposing tooth
If the etched area is not sealed, it may remineralize over time, but the risk of continued demineralization exists if not properly managed.
The maximum recommended number of 1.8ml cartridges of 2% lidocaine with
epinephrine 1:100,000 that may be safely administered to a 17kg child is
approximately
1) 0.5.
2) 1.
3) 1.5.
4) 2.
The maximum dose of lidocaine is 4.4 mg/kg, making 1.5 cartridges the safe maximum for a 17kg child
Which class of drugs has been implicated in the development of thrombotic and bleeding complications in patients with disseminated intravascular coagulopathy (DIC)?
1) NSAIDs
2) Vitamin K antagonists
3) ACE inhibitors
4) Statins
NSAIDs can exacerbate bleeding complications by affecting platelet function and are linked to increasing the risk of angioedema.
Which of the following best describes the concept of "informed refusal"?
1) A patient agreeing to treatment without understanding the risks
2) A patient declining treatment after being fully informed of the risks and benefits
3) A dentist refusing to treat a patient
4) A patient who is unable to make decisions about their care
Ethics and Jurisprudence Answer: 2Informed refusal occurs when a patient, after being provided with all necessary information regarding a treatment option, chooses not to proceed with it. This respects the patient's autonomy and right to make decisions about their own healthcare.
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.
Periradicular inflammation, larger opening of normal coronal formation are
symptoms of which of the following?
1) Hypo plastic Amelogenesis
2) Ankylosis
3) Dens invaginatus
4) Dentin dysplasia
Periradicular inflammation and larger opening of normal coronal formation are symptoms commonly associated with dens invaginatus. Dens invaginatus is a developmental dental anomaly where the enamel invaginates into the dental papilla during tooth formation. This condition can lead to various complications, including inflammation of the surrounding tissues (periradicular inflammation) and abnormal widening of the opening of the tooth (larger opening of normal coronal formation).
A 45-year-old patient awoke with a swollen face, puffiness around the eyes, and edema of the upper lip with redness and dryness. The likely condition is:
1) Acute periapical abscess
2) Angioneurotic edema
3) Infectious mononucleosis
4) Acute maxillary sinusitis
ADC Test Answer: 2
Angioneurotic edema, or angioedema, involves rapid swelling of the deeper layers of the skin and can cause facial swelling without dental complaints, often following an allergic reaction.
When treating a patient with an intellectual disability, which of the following is NOT a component of informed consent?
1) Ensuring the patient understands the risks and benefits of the proposed treatment
2) Having a legal guardian present to sign the consent form
3) Allowing the patient to ask questions about the treatment
4) Providing the patient with written information at their comprehension level
Informed consent requires that the patient themselves understands and consents to the treatment, not necessarily that a legal guardian must be present to sign.
What is the primary mode of transmission for hepatitis B in a dental
setting?
1) Respiratory droplets
2) Bloodborne pathogens
3) Fomites
4) Airborne particles
Hepatitis B is mainly transmitted through blood and other bodily
fluids. In a dental setting, the risk of transmission is highest through
exposure to contaminated sharp instruments, needlesticks, and mucosal contact
with infectious materials.
At what stage of development does the parotid gland form in utero?
1) 20-30 days
2) 30-40 days
3) 40-44 days
4) 50-60 days
The parotid gland begins to develop around 40-44 days in utero, which is approximately 1.5 months.
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.
Chlortetracycline acts by interfering with protein synthesis on bacterial but not mammalian ribosomes
After completion of endodontic chemomechanical debridement
1) all tissue should be removed from the root canal system.
2) permanent inflammation may be cause4)
3) the root canal should be sterile.
4) some areas of the root canal system may be incompletely cleaned
Despite thorough chemomechanical debridement, it is common for certain areas within the complex anatomy of the root canal system to remain inadequately cleaned. This can occur due to the presence of lateral canals, isthmuses, or other anatomical variations that are difficult to access, leading to potential areas of infection or inflammation.
Which of the following are included in the Orthodontic camouflage methods for treating class II malocclusion?
1) Retraction of upper teeth and forward movement of lower teeth
2) Retraction of maxillary incisors into pre-molar extraction space
3) Distal movement of maxillary molars
4) All of the above
SOLUTION The following three patterns of tooth movement can be used to correct a Class II malocclusion: · A combination of retraction of the upper teeth and forward movement of the lower teeth, without tooth extractions · Retraction of maxillary incisors into a premolar extraction space · Distal movement of maxillary molars and eventually the entire upper dental arch
What should be done with consent forms in dental records?
1) They should be discarded after treatment
2) They should be signed and stored securely
3) They should be kept in a separate financial record
4) They do not need to be documented
Consent forms must be properly signed and retained as part of the patient's clinical record to ensure legal compliance.
The most common cause of failure of the IDN (Inferior Dental Nerve) block is:
1) Injecting too low
2) Injecting too high
3) Injecting into the parotid gland
4) Incorrect anatomical landmarks
ADC Test Answer: 1
If the needle is injected too low, the anesthetic may not reach the nerve effectively, leading to failure of the block and insufficient anesthesia during dental procedures.
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.
The cause of death with opioid intoxication is 1. respiratory depression 2. cardiac arrest 3. terminal convulsions 4. oxygen apnea
Pharmacology Answer: 1The cause of death with opioid intoxication is respiratory depression
Which immunoglobulin is pentameric?
1) IgA
2) IgG
3) IgM
4) IgE
IgM is the largest immunoglobulin in terms of size and is structured as a pentamer, facilitating its role in early immune responses.
What is the most effective way to minimize the risk of sharps injuries in a dental practice? 1) Use of retractors during procedures 2) Proper disposal of needles and sharp instruments 3) Frequent handwashing 4) Wearing gloves at all times
Occupational Hazards Answer: 2Proper disposal in designated sharps containers is crucial in minimizing the risk of sharps injuries, which can lead to infections.
What substance is primarily responsible for the re-mineralization process in teeth?
1) Fluoride
2) Calcium
3) Phosphate
4) All of the above
Fluoride, calcium, and phosphate work together to enhance the re-mineralization process in enamel, helping to repair demineralized areas.
Which of the following is a loop diuretic used to manage hypertension?
1) Amiloride
2) Furosemide
3) Chlorothiazide
4) Spironolactone
Furosemide is a loop diuretic that acts on the kidneys to increase urine output, thereby lowering blood pressure.
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 is the primary risk of chisel and mallet technique for bone removal?
1) Damage to the adjacent teeth
2) Increased risk of infection
3) Increased risk of bone fracture
4) Increased risk of bleeding
The chisel and mallet technique requires careful execution as it can lead to fractures in the jaw bone if not performed correctly.
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.
Which of the following is NOT an indication for sealants?
1) Questionable or confirmed enamel caries
2) Presence of deep pits/fissure
3) Proximal caries
4) Increased risk for caries
Sealants are indicated for questionable or confirmed enamel caries, presence of deep pits/fissure, and increased risk for caries. Proximal caries are not an indication for sealants.
Aromatic amino acid is: 1. Tyrosine 2. Histidine 3. Arginine 4. Lysine
Biochemistry Answer: 1Tyrosine is Aromatic amino acid
A medication that is associated with gingivitis
1) phenytoin
2) carbamazepine
3) propranolol
4) diazepam
Gingivitis is a form of periodontal disease.
Medications such as phenytoin and birth control pills, and ingestion of heavy metals such as lead and bismuth are also associated with gingivitis.
Which drug is most effective in reducing mortality in patients with left ventricular systolic dysfunction ?
1) Enalapril
2) Aspirin
3) Digoxin
4) Frusemide
ACE inhibition has a beneficial impact on survival rates, functional status, and hemodynamics in patients with left ventricular systolic dysfunction.
In the renin-angiotensin system, a fall in perfusion pressure stimulates the juxtaglomerular cells in the kidney to release the enzyme renin.
Renin cleaves the decapeptide angiotensin I from angiotensinogen, a glycoprotein synthesized in the liver.
The octapeptide angiotensin II is formed by the action of ACE on angiotensin I.
Angiotensin II is a potent vasoconstrictor and stimulates the release of aldosterone and norepinephrine.
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.
A child has received a successful inferior alveolar nerve block using 1.5ml of
2% lidocaine with 1:100,000 epinephrine. However, during placement of a rubber
dam clamp on the first permanent molar, the child complains that the “tooth
ring” is hurting. Which of the following is the most appropriate management?
1) Wait 15 minutes until more profound anesthesia is achieved
2) Anesthetize the lingual nerve with the remaining lidocaine.
3) Anesthetize the long buccal nerve with the remaining lidocaine.
4) Proceed with treatment without rubber dam.
The long buccal nerve supplies the gingiva in the region and may require additional anesthesia
Impressions taken with which of the following materials are subject to distortion as a result of water sorption? 1. silicone rubber 2. polysulflde polymers 3. zinc oxide-eugenol-paste 4. polyether
Dental Material Answer: 4polyether materials are subject to distortion as a result of water sorption
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.
A dental chart is a part of the patient's dental record that specifically depicts the teeth and their conditions. A full dental record, on the other hand, includes the patient's medical and dental history, treatment plans, x-rays, notes from appointments, consent forms, and other relevant information about the patient's oral health.
The oral lesion of warty dsykeratoma is described as a small whitish area of the mucosa with a central depression
What is the legal obligation of a dentist when they suspect a patient is a victim of abuse or neglect?
1) To report the suspicion to the authorities immediately
2) To advise the patient to report the abuse themselves
3) To maintain confidentiality and not take any action
4) To conduct a thorough investigation before reporting
Dentists are mandated reporters and must report any suspicion of abuse or neglect to the appropriate authorities immediately.
At what gestational week does the development of the parotid gland begin?
1) 6 weeks
2) 12 weeks
3) 20 weeks
4) 24 weeks
The parotid gland begins to develop in utero around the 6th week, making it the first of the major salivary glands to form.
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.
What is the primary concern when treating geriatric patients with
cognitive impairment?
1) The absence of caries
2) Comfortable chair position
3) Financial considerations
4) Behavior management
Behavior management is crucial when treating geriatric patients with cognitive impairment as it helps in ensuring their cooperation and reducing anxiety, which can significantly affect the quality of care provided.
what do u understand by isograft
1.bone taken frm same individual
2.bone taken frm genetically same individual
3.bone taken frm identical twin
4.bone taken frm same individual
A graft of tissue that is obtained from a donor genetically identical to the recipient.
What type of epithelium lines exocrine glands?
1) Squamous
2) Transitional
3) Columnar or cuboidal
4) Stratified
Exocrine glands are typically lined with columnar or cuboidal epithelial cells, which are specialized for secretion.
Which of the following is NOT part of a typical adult dental record?
1) Medical history
2) Social history
3) Dental x-rays
4) List of family members' names
A typical adult dental record includes a medical history to inform the dentist about any health issues that may affect dental treatment, a social history to understand lifestyle factors impacting oral health, and dental x-rays to visualize the patient's oral structures. While family dental histories are sometimes noted, a list of family members' names is not typically part of a standard dental record.
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.
What is the most abundant extracellular cation?
1) Calcium
2) Sodium
3) Potassium
4) Magnesium
Sodium is the main extracellular cation, playing a crucial role in maintaining fluid balance and nerve function.
What is the maximum retention period for adult dental records as recommended by the GDC?
- 5 years
- 8 years
- 10 years
- There is no maximum retention period
The GDC recommends retaining adult dental records for at least 10 years after the last treatment.
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.
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.
Austenite is an alloy of iron and carbon with the iron in
1) Alpha form
2) Beta form
3) Gamma form
4) None of the above
Austenite is an alloy of iron and carbon where the iron exists in the Gamma (γ) form.
What is the dentist's evaluation of a patient's general health and appearance part of?
- Medical history
- Dental history
- Informed consent
- Treatment plan
The dentist's evaluation of a patient's general health and appearance is a critical component of the medical history, which informs the treatment approach.
For anterior teeth restorations, which type of material is preferred due to its esthetics?
1) Amalgam
2) Glass ionomer
3) Composite resin
4) Dental cement
Composite resin is preferred for anterior teeth restorations due to its superior esthetic qualities, allowing for natural color matching.
What’s true about the sealers if extruded out of the canal?
1) ZoE is most irritating.
2) AH Plus sealer is most irritating.
3) Real Seal is most irritating.
4) Both ZoE and AH Plus are more irritating than Real Seal.
ADC Test Answer: 4
Both Zinc Oxide Eugenol (ZoE) and AH Plus endodontic sealers can cause irritation if extruded into the periapical tissues, while Real Seal tends to have a lower irritation potential.
Ethohepatazine is a chemical derivative of meperidine
Patients with untreated malignant hypertension typically survive for how long without treatment? 1) 1 year 2) 2 years 3) 5 years 4) 10 years
Pathology and Medicine Answer: 1Untreated malignant hypertension has a poor prognosis, with a typical survival period of around one year due to severe complications.
Which drug acts as a central alpha2-agonist and is used in hypertension management?
1) Verapamil
2) Methyldopa
3) Captopril
4) Atenolol
Methyldopa is a centrally acting alpha2-agonist that lowers blood pressure by reducing sympathetic outflow.
Untrue about desflurane is:
1) Rapid induction and recovery
2) High vapour pressure
3) Induction is very smooth
4) Does not produce fluoride
Desflurane is isoflurane product so has pungent odour, rapid induction and recovery, very high vapour pressure.
The first ossification center of the mandible in six weeks old human embryo is found in which of the following locations
1) Future coronoid process
2) Future condylar process
3) Future mental foramen
4) Future mandibular foramen
SOLUTION The mandible is ossified in the fibrous membrane covering the outer surfaces of Meckel’s cartilages. These cartilages form the cartilaginous bar of the mandibular arch, and are two in number, a right and a left. Ossification takes place in the membrane covering the outer surface of the ventral end of Meckel’s cartilage , and each half of the bone is formed from a single center which appears, near the mental foramen, about the sixth week of fetal life. By the tenth week the portion of Meckel’s cartilage which lies below and behind the incisor teeth is surrounded and invaded by the membrane bone
Slowest induction and recovery is with:
1) Halothane
2) Isoflurane
3) Methoxyflurane
4) Desflurane
Methoxyflurane has the highest blood gas partition coefficient (15), resulting in the slowest induction and recovery.
What must a healthcare provider ensure about a patient before obtaining
informed consent?
1) The patient is of legal age
2) The patient has a high level of education
3) The patient is capable of understanding the information provided
4) The patient has a family member present
It is crucial that the patient has the capacity to understand the information related to their treatment to give valid consent.
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.
Which of the following is NOT a type of dental charting?
1) Periapical charting
2) Periodontal charting
3) Full mouth series charting
4) Panoramic charting
Panoramic radiographs are not a type of charting. They are a type of radiograph that provides a two-dimensional view of the entire mouth on a single film. The other options Periapical charting, Periodontal charting, Full mouth series charting, and Bitewing charting refer to different types of charting that are used to document specific dental conditions, such as the presence of cavities or periodontal disease.
Which of the following may be caused by a newly placed restoration that interferes with the occlusion?
1) Apical abscess
2) Pulpal necrosis
3) Apical periodontitis
4) Periodontal disease
An occlusal interference can lead to increased stress on the tooth, potentially resulting in apical periodontitis.
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.
Current evidence indicates that endorphins are 1. endogenous molecules having morphine like properties 2. receptors located in the periaqueductal grey area of the brain Which are sensitive to opiates 3. large polypeptides that regulate renal activity 4. central nervous system transmitters implicated in depressive psychoses
Pharmacology Answer: 1endorphins are endogenous molecules having morphine like properties
What is the significance of 'dentin involvement' in determining
operative treatment for dental caries?
1) It is a precise indicator for the need for operative treatment.
2) It is a vague term and cannot be relied upon for decision-making.
3) It is always indicative of severe caries progression.
4) It is directly correlated with the presence of cavities.
The term 'dentin involvement' is not specific enough to accurately
describe the various changes occurring in the pulpo-dentinal organ during caries
progression. This limits its use as a reliable indicator for determining the
need for operative treatment.
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.
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.
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.
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 received Atracurium which seems 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.
Hofmann elimination refers to the spontaneous fragmentation of Atracurium at the
bond between the quaternary nitrogen and the central chain.
Premature exfoliation of primary mandibular canine is most often the sequelae of:
1) Caries
2) Trauma
3) Serial tooth extraction
4) Arch length inadequacy
SOLUTION The two major symptoms of severe crowding in the early mixed dentition are severe irregularity of the erupting permanent incisors and early loss of primary canines caused by eruption of the permanent lateral incisors.
After a definitive analysis of the profile and incisor position, these patients face the same decision as those with moderate crowding; whether to expand the arches or extract permanent teeth. In the presence of severe crowding, limited treatment of the problem will not be sufficient and permanent tooth extraction is most likely the best alternative.
What is the cellularity of exocrine glands?
1) Multicellular
2) Unicellular
3) Both multicellular and unicellular
4) None of the above
Most exocrine glands in the human body are multicellular, with the exception of unicellular glands like goblet cells.
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
What is the normal pH range for venous blood?
1) 7.35-7.45
2) 7.25-7.35
3) 7.45-7.55
4) 7.40-7.50
Venous blood has a pH range of 7.35 to 7.45, which is essential for maintaining various biochemical processes in the body.
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.
Which fracture is most likely to lead to meningitis?
1) Le Fort 1
2) Le Fort 2
3) Le Fort 3
4) Zygomatic
Le Fort 3 fractures involve the craniofacial skeleton extensively and can disrupt the dura mater, increasing the risk of infection and potentially leading to meningitis.
What happens if a dentist does not obtain informed consent before performing
a procedure?
1) The dentist can be charged with assault
2) The patient can refuse to pay for the treatment
3) The treatment is automatically considered successful
4) The dentist's insurance will cover any resulting complications
Performing a procedure without informed consent can be considered a violation of the patient's right to self-determination and may result in legal consequences, including charges of assault or battery.
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.
An increase of the pressure within one of the carotid sinuses would result in an increase in 1) Mean arterial pressure 2) Cardiac output 3) The activity of the pressor center 4) The activity of cardiac vagal fibers
Physiology Answer: 4An increase of the pressure within one of the carotid sinuses would result in an increase in The activity of cardiac vagal fibers
During treatment, the dentist observes that the patient is clenching their fists. This reaction likely indicates:
1) Interest in the procedure
2) Relaxation
3) Anxiety or fear
4) Satisfaction with the treatment
Clenching fists is a common physical response to anxiety or fear, indicating that the patient may need additional support.
What does a rest seat refer to in RPD design?
1) A removable part of the denture
2) A prepared tooth surface for the rest to fit
3) A framework supporting teeth
4) A type of occlusal contact
A rest seat is the prepared surface on the tooth that accommodates the rest, providing a stable support.
What is the purpose of using cotton pellets during a pulpotomy procedure?
1) To achieve hemostasis.
2) To remove caries.
3) To reduce occlusal surface.
4) To mix IRM.
Cotton pellets are used to achieve hemostasis during a pulpotomy procedure.
What is the most common site for mandibular fractures resulting from interpersonal violence? 1) Condyle 2) Symphysis 3) Angle 4) Ramus
Oral and Maxillofacial Surgery Answer: 3The angle of the mandible is the most common site for fractures resulting from interpersonal violence. This often occurs as a result of a direct blow to the side of the face.
According to Angle, the key to normal occlusion in adults is the anteroposterior relationship. His description of teeth relationships in normal occlusion remains a fundamental observation. Angles observations are based on which teeth that are most reliable to understand occlusion
1) First molars and canines
2) First molars and first Premolars
3) Canines and first Premolars
4) First molars and central incisors
SOLUTION The mesial incline of the upper canine occludes with the distal incline of the lower [canine]; the distal incline of the upper canine occludes with the mesial incline of the buccal cusp of the lower first premolar.
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.
What material is LEAST usable for an impression of PFM (Porcelain-Fused-to-Metal)?
A. Alginate
B. Polyvinyl siloxane
C. Polyether
D. Agar
Alginate is primarily used for making preliminary impressions due to its set time and hydrophilic properties but does not provide the necessary detail and stability required for precise impressions needed for PFMs.
The flexibility of a retentive clasp arm is affected by the
1). location of the reciprocal arm.
2). length of the retentive arm.
3). position on the abutment tooth.
4). location of the occlusal rest.
The flexibility of a retentive clasp arm is affected by several factors, including: Length: Longer clasps are more flexible. Diameter: A smaller diameter
is less flexible. Cross-sectional form: Round cross-sections are more
flexible than half-round cross-sections. Alloy: The alloy used to
construct the clasp affects its flexibility.
Width-thickness ratio: The width-thickness ratio of the clasp arm affects its flexibility
Thymol is preservative used for:
1) Halothane
2) Isoflurane
3) Desflurane
4) Enflurane
Halothane can be decomposed by light so stored in amber colour bottles and contains thymol 0.01 % as preservative.
Ketamine is contraindicated in:
1) Hypertension
2) Raised intracranial tension
3) Raised intraocular tension
4) All of the above
Ketamine raises both systolic and diastolic blood pressures and is thus contraindicated in hypertension. It increases cerebral blood flow and intracranial pressure and is thus contraindicated in raised intracranial tension. Ketamine raises intraocular tension and is thus contraindicated in glaucoma.
What should be done with dental records at the end of each day?
1) Leave them open on the desk
2) Compress, close, and lock them securely
3) Dispose of any unnecessary records
4) Hand them over to the receptionist
To maintain security and confidentiality, dental records should be properly stored and locked at the end of each day.
What should not be included in a patient's dental record?
- Financial information
- Detailed treatment plans
- Patient's home address
- Insurance policy details
Financial information, such as insurance claims and payment vouchers, is not considered part of the patient's clinical record and should be kept separate.
Which of the following is NOT a characteristic of an ideal abutment tooth?
1) Equal or more than half alveolar bone support
2) Strong connectors
3) Compromised periodontal health
4) Good crown to root ratio
Compromised periodontal health is typically a reason to avoid using a tooth as an abutment.
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.
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.
Vasoconstrictor in local anesthetic solution is?
1) Increase toxic effects of LA
2) Reduce toxic effects of LA solution
3) Increase bleeding
4) Has no effect on efficacy LA solution
The vasoconstrictor in a local anesthetic solution is used to reduce the toxic effects of the solution.
What is the significance of the tail of an enamel rod being less mineralized
than the head?
1) It helps in the flexibility of the tooth
2) It provides a site for tooth coloration
3) It aids in nutrient absorption
4) It is more susceptible to decay
The tail of an enamel rod has less mineral content, making it more prone to demineralization and decay compared to the head.
The nerve to masseter passes 1. deep to the medial pterygoid muscle 2. posterior to temporomandibular joint 3. superior to zygomatic arch to enter the muscle on its medial surface 4. through the mandibular notch to enter the muscle on its medial surface
Anatomy Answer: 2The nerve to masseter passes posterior to temporomandibular joint
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.
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.
Acute or subacute suppurative osteomyelitis occurs most frequently in the
1) anterior maxilla
2) posterior mandible.
3) posterior maxilla
4) anterior mandible.
The posterior mandible is more susceptible due to its dense cortical bone and
reduced blood supply, which hinder immune responses.
What is the role of dental nurses in record keeping?
1) They are not involved in record keeping
2) They can assist in notetaking to ensure contemporaneous records
3) They are responsible for financial records
4) They only handle patient scheduling
Dental nurses play a vital role in documenting patient information during appointments, enhancing the accuracy of records.
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.
What is the purpose of using a dental dam during a restorative procedure?
1) To prevent cross-contamination
2) To keep the area dry
3) To isolate the tooth from saliva and debris
4) To provide a clear visual field for the dentist
A dental dam is a thin piece of rubber or latex that is placed over the tooth being worked on to keep it dry and free from saliva and debris during a restorative procedure like a filling or root canal treatment.
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.