Dentist Abroad
Thiamine is useful in:
1) Collagen synthesis
2) Clotting factor production
3) Epithelial integrity
4) Cellular energy production
ADC Test Answer: 4
Thiamine (Vitamin B1) is a vital coenzyme in the metabolism of carbohydrates, playing a crucial role in the production of energy.
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.
What is the advantage of digital dental records over traditional paper records?
1) They are more environmentally friendly
2) They are easier to store and retrieve
3) They can be easily shared with other healthcare providers
4) They reduce the risk of loss or damage
Digital dental records are stored electronically, which makes them easier to store, retrieve, and organize compared to paper records.
What percentage of children suffer from dental trauma?
1) 5% at age 8
2) 11% at age 12
3) 13% at age 15
4) All of the above
The percentages of children suffering from dental trauma increase with age, with 5% at age 8, 11% at age 12, and 13% at age 15.
Epinephrine causes increased blood glucose level due to: 1. Increased glycogenolysis in liver and muscle 2. Activation of phosphorylase 3. Inhibition of glycogen synthesis in liver
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 development of lateral canals can be attributed to:
1) Faulty restoration technique
2) Cracks in Hertwig’s epithelial root sheath
3) Genetic anomalies
4) External dental trauma
ADC Test Answer: 2
Lateral canals form due to disruptions in the Hertwig's epithelial root sheath during tooth root development, creating additional channels in the root structure.
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.
Correction of a lingual crossbite of tooth 1.2 has the best long-term prognosis if 1.2 is:
1) Ideally inclined, with 5% overbite.
2) Ideally inclined, with 50% overbite.
3) Lingually inclined, with 5% overbite.
4) Lingually inclined, with 50% overbite.
Orthodontics Answer: 4Lingual inclination combined with significant overbite allows better stabilization of tooth position after correction.
Which of the following is a potential complication of dental anesthesia?
1) Nerve damage
2) Hematoma formation
3) Infection
4) All of the above
Dental anesthesia can lead to complications such as nerve damage, hematoma formation, and infection at the injection site.
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.
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.
What condition is likely if a patient's hands feel warm and moist?
1) Hyperthyroidism
2) Anxiety
3) Congestive heart failure
4) Hypothermia
Warm and moist hands can be indicative of hyperthyroidism due to increased metabolism and sweat production, distinguishing it from other conditions.
Condylar fractures account for 26% of all mandibular fractures, often resulting from falls or trauma to the chin.
What do pulp tester readings signify?
1) Exaggerated response indicates irreversible pulpitis
2) No response indicates reversible pulpitis
3) Exaggerated response indicates reversible pulpitis
4) No response indicates healthy pulp
An exaggerated response to pulp testing typically indicates reversible pulpitis, while no response suggests irreversible pulpitis.
What is the typical onset of pain for a dry socket?
1) Immediately post-extraction
2) 3-4 days post-extraction
3) 1 week post-extraction
4) 2 weeks post-extraction
Dry socket pain typically starts 3-4 days after tooth extraction due to clot breakdown and bone exposure.
Which immunoglobulin increases in gingival inflammation?
1) IgA
2) IgM
3) IgG
4) IgE
IgG levels increase in response to gingival inflammation, indicating an immune response to periodontal pathogens.
Visual aids can help reduce anxiety in dental patients by:
1) Making the procedure seem more complex
2) Distracting the patient from their fear
3) Clarifying what will happen during treatment
4) Encouraging the patient to avoid the procedure
Visual aids can improve understanding and reduce anxiety by clearly illustrating the steps of the treatment.
What is a secondary caries lesion?
1) A lesion that occurs on the surface of a restored tooth
2) A lesion that occurs only in the presence of fluoride
3) A lesion that is limited to the enamel surface
4) A lesion that occurs only in children
Secondary or recurrent caries occur at the junction of the tooth and a restoration, often due to microleakage or inadequate oral hygiene.
Which of the following procedures typically requires written informed
consent?
1) Routine dental examination
2) Tooth extraction
3) Periodontal probing
4) Radiographic imaging
Tooth extraction is considered an invasive and irreversible procedure, thus requiring written informed consent.
Which of the following can be caused by excessive consumption of soft drinks?
1) Digestive disorder
2) Tooth erosion
3) Tooth decay
4) Colorization of the tongue
Excessive consumption of soft drinks can cause tooth erosion. Soft drinks are
high in sugar and acid, which can weaken the enamel on the teeth over time. This
erosion can lead to tooth sensitivity, discoloration, and even tooth loss if not
addressed It is important to limit the consumption of sugary and acidic
beverages and maintain good oral hygiene to prevent tooth erosion.
What is the advantage of using electronic patient records over paper records?
- They take up less physical space
- They are more easily accessible and less prone to loss
- They are more difficult to alter
- They are less expensive
Electronic records can be accessed and retrieved more quickly and are less likely to be misplaced or damaged than paper records.
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.
Attrition refers to:
1) Wear due to chemical exposure
2) Natural wear from tooth-to-tooth contact
3) Loss of dentin due to bacteria
4) Abrasion from external materials
ADC Test Answer: 2
Attrition involves the mechanical wearing down of the biting surfaces of teeth, primarily from occlusal contact during chewing.
A dental patient on clonidine therapy for hypertension most often complains of
1) Xerostomia
2) Frequent visit to the bathroom
3) Restlessness
4) Postural hypertension
Clonidine cause significant CNS depression and xerostomia
Administration of which among the following anaesthetic agent results in a state of dissociative anaesthesia?
1) Ether
2) Propofol
3) Ketamine
4) Thiopentone sodium
Dissociative Anaesthesia refers to a characteristic state which results after an induction dose of Ketamine. The patient's eyes remain open with a slow nystagmic gaze in Dissociative Anaesthesia. Its major effect is through the inhibition of the NMDA receptor complex.
What is Sunday bite related to?
1) Angle’s class I with anterior open bite
2) Angle’s class I with anterior deep bite and posterior cross bite (unilateral)
3) Angle’s class II
4) Angle’s class III
SOLUTION Children and adults with a skeletal Class II relationship and an underlying skeletal Class II jaw relationship position the mandible forward in a “Sunday bite,” making the occlusion look better than it really is.
An increase or decrease in the Y axis is related to:
1) The growth pattern
2) Extrusion of molars
3) Intrusion of molars
4) All of the above
SOLUTION
The alpha-1 function post-synaptically at the neuromuscular junction
is responsible for:
1) Smooth muscle contraction
2) Skeletal muscle contraction
3) Cardiac muscle contraction
4) Inhibition of muscle contraction
Alpha-1 receptors mediate the contraction of skeletal muscles.
The setting time for a condensation silicon impression material is best controlled by amount of accelerator added
Syncope may be treated with any of the following drug except
1) Phenylephrine
2) Oxygen
3) Ephedrine
4) Isoproterenol
Isoproterenol is used in the management of bronchospasm during anesthesia; adjunctive treatment for shock.
Which component of amalgam gives strength?
1) Copper
2) Silver
3) Tin
4) Zinc
Copper enhances the strength and hardness of dental amalgam, making it a critical component in its formulation.
Tongue is protruded by Genioglossus
What is the relationship between fluoride concentration and dental caries
resistance?
1) Low fluoride levels lead to greater resistance.
2) High fluoride levels lead to greater resistance.
3) There is no relationship between fluoride and caries resistance.
4) Fluoride levels do not affect caries resistance.
Higher fluoride levels can lead to the formation of fluorapatite, which is more resistant to acid attack than hydroxyapatite, thereby reducing the risk of dental caries.
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.
Which of the following is the most important factor in disease progression in smokers?
1) Smokers have drier mouths than non-smokers
2) Smokers have poorer oral hygiene than non-smokers
3) Nicotine will impair the chemotactic and phagocytic properties of PMNs
4) The gingival blood flow is reduced in smokers
Reduced gingival blood flow in smokers contributes significantly to the progression of periodontal disease and other oral health issues.
What is the ideal angle for subgingival curettage with universal curettes?
1) 45 degrees
2) 60 degrees
3) 70 degrees
4) 90 degrees
A 45-degree angle is optimal for subgingival curettage, allowing effective scaling while preserving soft tissue.
What is TRUE in regards to osteogenesis imperfecta?
1) Manifests with blue sclera
2) May be associated with deafness
3) Sex-linked disorder of bones that develop in cartilage
4) All of the above
ADC Test Answer: 1
Osteogenesis imperfecta is characterized by fragile bones, blue sclera due to thin collagen in the eye, and may also have associations with hearing loss.
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.
Signs and symptoms that commonly suggest cardiac failure in a patient being assessed for oral surgery are:
1) Elevated temperature and nausea
2) Palpitations and malaise
3) Ankle edema and dyspnea
4) Erythema and pain
ADC Test Answer: 3
Symptoms of congestive heart failure often include edema in the lower extremities and difficulty breathing, which should be monitored in patients prior to surgery.
What feature of a crown is most likely responsible for gingival swelling?
1) Material of the crown
2) The occlusion
3) Proximal Contour
4) Surface finish
Poor proximal contour can lead to food impaction and plaque accumulation, contributing to gingival swelling and inflammation around crowns.
Which of the following antibiotics shows an incidence of approximately 8% cross-allergencity with penicillins?
1) Bacitracin
2) Erythromycin
3) Cephalexin
4) Vancomycin
Cephalosporins can cause allergic reactions in people with penicillin allergy.
it is generally recommended that those allergic to penicillin avoid cephalosporins all together.
What is the main requirement of the Data Protection Act 2018 concerning patient records?
- Records must be kept for at least 10 years
- Records must be encrypted at all times
- Records must be kept securely and confidentially
- Records must be backed up daily
The Data Protection Act 2018 requires dental practices to secure patient records and restrict access to authorized personnel only to safeguard patient confidentiality.
Kiwi is known to potentially cause which types of hypersensitivity reactions?
1) Type II
2) Type III
3) Type I
4) Type IV
Kiwi can trigger type I hypersensitivity reactions, such as anaphylaxis and urticaria, due to IgE-mediated responses to specific proteins in the fruit.
Diagnosis of Congenitally Missing Mandibular Second Premolar
What is the earliest age to confirm the diagnosis of a congenitally missing mandibular second premolar?
1) 1 year.
2) 3 years.
3) 5 years.
4) 7 years.
Pediatric Dentistry Answer: 4At around 7 years of age, most permanent teeth in the mandible begin to erupt. Radiographic evaluation at this stage confirms the absence of a tooth germ for the second premolar.
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.
What is the approach for the Gillies method in zygomatic fractures?
1) A vertical incision is made in the temporal hairline, and the elevator is then tunneled underneath the temporalis fascia.
2) The incision is made between the temporal fascia and temporalis muscle.
3) A 3-cm incision is placed 4 cm superior to the zygomatic arch and posterior to the temporal hairline.
4) A horizontal incision is made along the zygomatic arch.
The Gillies approach involves a specific incision that allows for direct access to the zygomatic arch, facilitating accurate fracture reduction through a bimanual technique.
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.
What causes early childhood caries (ECC)?
1) High protein diet
2) Fruit-based drinks
3) Low carbohydrate intake
4) Regular dental check-ups
One of the primary causes of early childhood caries is the frequent consumption of fruit-based drinks, which can contain high levels of sugar.
What should be done if a patient refuses a recommended treatment plan?
1) Ignore the refusal
2) Document the refusal in the dental record
3) Force the treatment
4) Refer the patient to another dentist
It is essential to document a patient's refusal to accept treatment to maintain accurate records and protect against potential legal issues.
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.
Following trauma to the tooth, if there is no response to pulp tests the next day you should:
1) Review again later
2) Start endodontic treatment
3) Extraction of tooth
4) Perform additional sensibility tests
ADC Test Answer: 1
Initial negative responses may not indicate pulp necrosis, as the pulp could still be viable, so follow-up is essential to confirm the diagnosis.
Which of the following is NOT a function of rests?
1) To maintain occlusal contact
2) To provide aesthetics
3) To prevent displacement of abutment teeth
4) To provide indirect retention
Rests primarily focus on functional roles, like support and stability, rather than aesthetic enhancement.
What does the term "material risks" refer to in the context of informed
consent?
1) The cost of the treatment
2) The most common risks associated with the procedure
3) The most serious risks associated with the procedure
4) The risks that the patient is most concerned about
Material risks are significant risks that the patient should be
informed about, as they are most relevant to the decision-making process.
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 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.
A patient presents with a history of using an old diamond bur. What consequence might arise from this?
A. Faster cutting
B. Excessive heat generation
C. Reduced pain during procedures
D. Improved tooth surface finish
Using an old diamond bur can lead to inadequate cutting efficiency, forcing the dentist to apply excessive pressure which generates excessive heat—this can damage the dental pulp.
What is the primary legal concern regarding dental records?
- Data protection
- Patient confidentiality
- Consent management
- All of the above
Dental records are subject to legal regulations concerning data protection, patient confidentiality, and consent management.
The junction between primary and secondary dentine is:
1) A reversal line
2) Sharp curvature
3) A resting line
4) A reduction in the number of tubules
ADC Test Answer: 2
The relationship between primary and secondary dentine is characterized by a sharp transition in the curvature of dentinal tubules as changes in odontoblast activity occur post-eruption.
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.
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
Of the following, the most difficult impaction to extract is:
1) Mesioangular
2) Vertical
3) Distoangular
4) Horizontal
Distoangular impactions of mandibular molars are often considered the most challenging to extract due to their position and the amount of bone that must be removed to access the tooth. The angulation of the tooth can complicate the extraction process, requiring more extensive surgical intervention. Additionally, the removal of bone in this area can weaken the ramus of the mandible, increasing the risk of fracture during extraction.
Which of the following is a crucial step in the pulpotomy procedure?
1) Directly place IRM after pulpal amputation.
2) Amputation of the coronal pulp with a bur.
3) Use a rubber dam to isolate the tooth.
4) Immediate placement of a stainless steel crown.
A rubber dam is essential for isolating the tooth during pulpotomy, ensuring a clean and sterile field.
What is the most appropriate action for a dentist to take if they suspect a
patient with a disability is being abused or neglected?
1) Report the suspicion to the patient's caregiver
2) Report the suspicion to the patient's guardian
3) Report the suspicion to the authorities
4) Ignore the suspicion due to the patient's disability
Dentists are mandated reporters for all forms of suspected abuse or
neglect, including cases involving patients with disabilities. The most
appropriate action is to report the suspicion to the authorities, such as Adult
Protective Services or Child Protective Services, depending on the patient's age
and the nature of the suspicion.
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.
A dentist is using a Sof-Lex disc on an upper molar and lacks finger support. What is most likely to occur?
1) Gingival trauma
2) Mucosal burn
3) Mucosal trauma
4) Trauma to adjacent tooth
5) Gingival laceration
Lack of finger support while using a Sof-Lex disc can lead to improper control, resulting in potential trauma to the gingiva.
Afet tooth eruption in permanent teeth the apex is fully developed after 2-3 years
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
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.
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.
Which of the following is not an intravenous anaesthetic agent?
- Cyclopropane
- Barbiturates
- Propofol
- Etomidate
Cyclopropane is not an intravenous anaesthetic agent.
Patients with which blood pressure range should be encouraged to seek medical consultation despite being able to undergo dental treatment? 1) 110/70 mmHg 2) 120/80 to 140/90 mmHg 3) 180/110 mmHg 4) 160/110 mmHg
Pathology and Medicine Answer: 2Patients with blood pressure between 120/80 and 140/90 should be encouraged to consult a doctor, even though dental treatment can proceed.
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.
Which nerve fibers are responsible for pulpal pain?
1) A-alpha fibers
2) A-beta fibers
3) Delta fibers
4) C fibers
Delta fibers are responsible for sharp, stabbing pain associated with pulpal pain, while C fibers transmit dull, aching pain.
Alkalinization of urine is done during administration of which of the following chemotherapeutic drugs?
1) Ara-C (Cytarabine)
2) Methotrexate
3) Cisplatin
4) Ifosfamide
Alkalinization of urine is used in patients receiving high dose methotrexate to promote renal excretion and to avoid nephrotoxicity IV Sodium bicarbonate is used to maintain urine pH above 7.0 to avoid precipitation of methotrexate (a weak acid) in the acid pH of renal tubules
The chemical nature of bacterial exotoxins is, a lipopolysaccharide complex
Dens in dente is thought to arise as a result of 1. a normal tooth but enclaved within an other tooth, during formation 2. proliferation and evagination of an area of the inner enamel epithelium 3. extensive growth of mesenchymal cells of pulp tissue 4. an invagination of the enamel organ during tooth formation
Oral Pathology Answer: 4Dens in dente is an invagination of the enamel organ during tooth formation
What is the minimum requirement for the retention of dental records according to the GDC?
- 5 years for adults, 8 years for children
- 8 years for adults, 10 years for children
- 10 years for adults, indefinitely for children
- Different retention periods for each type of treatment
The GDC advises that dental records should be retained for at least 8 years after the last treatment for adults and 10 years for children until the patient reaches 25 years of age or 8 years after the last treatment, whichever is longer.
What is the recommended fluoride concentration for community water fluoridation?
1) 0.5 ppm
2) 1.0 ppm
3) 1.5 ppm
4) 2.0 ppm
The recommended fluoride concentration for community water fluoridation is 1.0 ppm, which is effective in reducing dental caries.
What is the recommended protocol for handling a needlestick injury in the
dental office?
1) Immediately notify the supervisor and seek medical attention
2) Apply pressure to the wound and wash thoroughly with soap and water
3) Ignore the injury and continue working
4) Apply an antiseptic to the wound and report the incident later
If a needlestick injury occurs, it is crucial to immediately notify the supervisor and seek medical attention. This allows for timely administration of post-exposure prophylaxis and proper management of the potential risk of bloodborne pathogen transmission.
Which of the following will most lead to a person unwilling to accept criticism:
1) Being raised in a destructive criticism environment.
2) Working in a destructive criticism environment.
3) The person only gives out destructive criticism.
4) Having aggressive behavior.
Being raised in a destructive criticism environment can greatly contribute to a person's unwillingness to accept criticism. This is because if someone grows up constantly being subjected to negative and destructive criticism, they may develop a fear of judgment and rejection. They may also internalize the belief that criticism is always harmful and personal, making them defensive and resistant to any form of feedback. This upbringing can shape their mindset and make them view criticism as an attack rather than an opportunity for growth, leading to their unwillingness to accept it.
Which of the following enzymes is active in adipocytes following a heavy meal?
1) Glycogen phosphorylase
2) Glycerol kinase
3) Hormone-sensitive triacylglyceride lipase
4) Phosphatidate phosphatase
The enzyme phosphatidate phosphatase converts phosphatidic acid to diacylglycerol during synthesis of triacylglycerides. The function of adipose tissue is the storage of fatty acids as triacylglycerols in times of plenty and the release of fatty acids during times of fasting or starvation. Fatty acids taken in by adipocytes are stored by esterification to glycerol-3-phosphate.
Glycerol kinase is not present to any great extent in adipocytes, so that glycerol freed during lipolysis is not used to reesterify the fatty acids being released.
The enzyme triacylglyceride lipase is turned on by phosphorylation by a cyclic AMP-dependent protein kinase following epinephrine stimulation.
A dental professional is unsure whether a
situation constitutes abuse or neglect. What is the best course of action?
1) Wait for more evidence before taking action
2) Consult with a supervisor or legal counsel
3) Discuss the situation with the patient’s family
4) Document the situation and do nothing
Explanation: When in doubt, it is important to seek
guidance from a supervisor or legal counsel to ensure that the appropriate
steps are taken in accordance with the law.
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.
A woman aged 48 years visits a dermatologist to have a mole removed. The patient tells her physician that she got allergic reaction to a local anaesthetic the last time she had undergone dental work. Investigation of the lady's dental records by her dentist discloses that the patient received procaine for a tooth extraction. Among the following alternatives, which drug would be suitable for the present procedure?
- Benzocaine
- Chloroprocaine
- Tetracaine
- Mepivacaine
Two classes of local anaesthetics exist namely: Esters and Amides.
permanent maxillary First molar teeth normally has four root canals
Chlortetracycline acts by interfering with protein synthesis on bacterial but not mammalian ribosomes
Nonselective beta blocker possessing quinidine-like membrane stabilizing effects.
1) pindolol
2) acebutolol
3) sotalol
4) esmolol
Beta-blockers, such as propranolol, labetalol, and pindolol, can have membrane stabilizing effects (eg, quinidinelike effects, Vaughan-Williams class I antiarrhythmic effects).
A medication that may elicit headache as a side effect :
1) thiazide
2) Methyldopa
3) hydralazine
4) Procainamide
A number of medications may elicit headache as a side effect.
Common offenders include nitroglycerin, hydralazine, calcium-channel blockers, digitalis, and estrogen.
Recreational drugs such as nicotine, alcohol, marijuana, and amphetamines can also induce headache.
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.
Which of the following adverse reactions of oral contraceptives is the most common and the most serious?
1) Hypotension
2) Hepatotoxicity
3) Uterine neoplasia
4) Thromboembolism disorder
ADC Test Answer: 4
Thromboembolism is a significant risk associated with oral contraceptives, particularly in women with additional risk factors.
Following a simple extraction of tooth 47, hemostasis was achieved Forty eight hours later, there is renewed
bleeding from the extraction site. Firm pressure fails to achieve hemostasis.
The most appropriate management is to
1) give local anesthetic, pack and suture.
2) apply firm pressure and ice for 10 minutes.
3) obtain an international normalized ratio (INR) and a complete blood count
4) give local anesthetic and electrocauterize the socket.
Postoperative bleeding may indicate a coagulopathy or systemic issue requiring investigation.
What enzyme assists microorganisms when they are causing dentine caries?
1) Collagenase
2) Enolase
3) Lactoferrin
4) Amylase
Enolase is involved in the glycolytic pathway of bacteria, aiding in their metabolism and contributing to the caries process.
What is the primary bacterium associated with root caries?
1) Streptococcus mutans
2) Lactobacillus
3) Actinomyces
4) Streptococcus salivarius
The specific plaque hypothesis identifies Actinomyces as the main bacterium associated with root caries, which are lesions that occur on the root surface of the tooth, typically in older adults with gum recession.
Consent is needed from a patient to share information. Which of the following needs 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 GP
Sharing information with an insurance company typically requires explicit consent due to privacy concerns and regulations.
The emergency treatment for a painless necrotic pulp is:
1) Drainage through the canals
2) No immediate action required
3) Root canal therapy
4) Extraction of the tooth
ADC Test Answer: 2
A painless necrotic pulp does not necessitate urgent intervention, as the absence of symptoms suggests limited clinical urgency.
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.
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.
Bonding of GIC to tooth structure is brought about by
1) metal ions
2) hydroxyl bond
3) carboxyl bond
4) ionic bond
one ot the main adanhtges of GIC as a restoratie material was its ability to form chemical bonds with the tooth structure. Bonding in GIC primarily invokes chelation of carboxyl groups of the polyacids sith the calcium in the apatite of enamel and dentin.
Why must central and lateral incisors be splinted together when canines are
replaced?
1) To prevent lateral drifting of the bridge
2) To provide additional bone support
3) To improve the aesthetic outcome
4) To balance the bite force distribution
splinting is used to distribute occlusal forces and prevent lateral drifting, which is particularly important when replacing canine teeth.
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
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.
Which filing system is commonly used for organizing paper dental records?
1) Vertical filing cabinets
2) Lateral filing cabinets
3) Both 1 and 2
4) None of the above
Both vertical and lateral filing cabinets can be used to organize paper dental records for easy retrieval.
A child with autism may exhibit:
1) Repetitive actions and sensitivity to light and noise
2) Social withdrawal and lack of eye contact
3) High intelligence and advanced verbal skills
4) All of the above
Autism spectrum disorder (AS4) is characterized by a range of behaviors, including repetitive actions such as hand-flapping or rocking, and sensory sensitivities like being overly sensitive to light and noise. While children with ASD can have varying levels of intelligence and verbal skills, the core features of the disorder are the presence of repetitive behaviors and sensory issues, which are crucial for diagnosis and understanding the condition's impact on daily functioning.
The first tapping sound, known as the Korotkoff sound, represents the systolic pressure.
The sulphur containing amino acid is: 1. Cystine 2. Proilne 3. Arginine 4. Isoleucine
Biochemistry Answer: 1Cystine is sulphur containing amino acid
How much lidocaine is in 3 cartridges of 2% lidocaine?
1) 66 mg
2) 132 mg
3) 44 mg
4) 88 mg
Each cartridge contains 36 mg of lidocaine (1.8 ml x 20 mg/ml), so 3 cartridges contain 108 mg (3 x 36 mg).
What enzyme assists microorganisms in the dentin caries process?
1) Enolase
2) Collagenase
3) Amylase
4) Lactoferrin
Enolase plays a crucial role in the metabolic processes of bacteria involved in dentin caries, facilitating their growth and acid production.
What is the primary purpose of a dental sealant?
1) To improve aesthetics
2) To prevent tooth decay
3) To strengthen enamel
4) To whiten teeth
Dental sealants are primarily used to prevent tooth decay by sealing the grooves and pits on the chewing surfaces of teeth, making them less susceptible to plaque accumulation.
Which of the following is not an intravenous anaesthetic agent?
1) Cyclopropane
2) Barbiturates
3) Propofol
4) Etomidate
Cyclopropane is not used as an intravenous anaesthetic agent. It is an inhalational anaesthetic.
Which of the following is a contraindication for the use of local
anesthesia in a geriatric patient?
1) Hypertension
4) Cardiovascular disease
3) Diabetes
4) All of the above
All of the listed conditions can influence the patient's response
to local anesthetics. It is important to carefully consider the patient's
medical history and current medications before administering local anesthesia.
What antibiotic is used to manage a superinfected herpetic lip lesion?
1) Ciprofloxacin
2) Metronidazole
3) Cefuroxime
4) Doxycycline
Cefuroxime is effective against a range of bacteria that may superinfect herpetic lesions, making it a suitable choice for 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 thiazide diuretic commonly used to manage hypertension?
1) Furosemide
2) Amiloride
3) Chlorothiazide
4) Spironolactone
Chlorothiazide is a thiazide diuretic commonly used in hypertension, while Furosemide is a loop diuretic, Amiloride is a potassium-sparing diuretic, and Spironolactone is an aldosterone antagonist.
If maxillary canines are placed forward to orbital plane, they are said to be in
1) Protraction
2) Retraction
3) Abstraction
4) Contraction
Orthodontics Answer: 1
SOLUTION According to Simon, in normal arch relationship, the orbital plane passes through the distal axial aspect of the maxillary canine Malocclusions described as anteropostenor deviations based on their distance from the orbital plane are as follows: 1.
Simon used the orbital plane (a plane perpendicular to the F-H plane at the margin of the bony orbit directly under the pupil of the eye).
2. Retraction: The teeth, one or both dental arches and/or jaws are too far backward, i.e. placed posterior to the plane than normal
What is the legal status of informed consent in an emergency situation?
1) It is not required
2) It is always required
3) It is required unless the patient is unconscious
4) It is required unless the treatment is lifesaving
In an emergency where immediate treatment is necessary to save a patient's life or prevent serious harm, informed consent is not required due to the urgent nature of the situation.
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.
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
The principal role of Vitamin E in the prevention of oxidative damage is to potentiate the action of superoxide dismutase
Cardio stable anaesthetic:
1) Etomidate
2) Propadanil
3) Ketamine
4) Thiopental
Etomidate is known for its cardio stability, making it a preferred choice in patients with cardiovascular issues.
The increased venous return to the heart causes: 1. End diastolic volume increase 2. End systolic volume decrease 3. Decrease stroke volume 4. Decreased isovolumetric ventricular contraction.
Physiology Answer: 1The increased venous return to the heart causes End diastolic volume increase
What is the role of dental professionals in preventing abuse and neglect?
1) To provide legal advice to patients
2) To recognize signs and report suspicions
3) To conduct investigations into suspected cases
4) To provide therapy for victims
Dental professionals are trained to recognize signs of abuse and neglect and have a responsibility to report their suspicions to the appropriate authorities.
What is the most effective non-pharmacological method for managing dental anxiety?
1) Tell-Show-Do technique
2) Breathing exercises
3) Positive reinforcement
4) Nitrous oxide sedation
Breathing exercises, such as deep breathing or diaphragmatic breathing, are widely recognized as effective non-pharmacological methods for reducing anxiety. They help the patient to relax and can be performed easily without additional equipment.
What is the recommended practice for handling sharps in the dental office?
1) Recapping needles before disposal
2) Placing used sharps in a designated sharps container immediately after use
3) Reusing needles and syringes
4) Placing sharps in the regular trash
The recommended practice for handling sharps in the dental office is to place them in a designated sharps container immediately after use to prevent accidental injury and reduce the risk of transmission of bloodborne pathogens.
What is the difference between fluorapatite and carbonate substituted
hydroxyapatite?
1) Fluorapatite is less soluble than carbonate substituted hydroxyapatite
2) Fluorapatite is more soluble than carbonate substituted hydroxyapatite
3) They have the same solubility
4) Fluorapatite does not occur in tooth structure
Fluorapatite is a form of hydroxyapatite that has incorporated fluoride ions, which makes it more resistant to acid attacks and thus less soluble compared to carbonate substituted hydroxyapatite.
Which of the following is a common challenge in providing dental care to patients with Alzheimer's disease?
1) Difficulty in understanding and following instructions
2) Increased tolerance for pain and discomfort
3) Enhanced manual dexterity for oral hygiene
4) Decreased sensitivity to taste and smell
Alzheimer's disease is characterized by cognitive impairment, which can make it challenging for patients to follow complex instructions or remember to perform oral hygiene tasks.
Of the following, the most difficult impaction to extract is:
1) Mesioangular
2) Vertical
3) Distoangular
4) Horizontal
Distoangular impactions of mandibular molars are often considered the most challenging to extract due to their position and the amount of bone that must be removed to access the tooth. The angulation of the tooth can complicate the extraction process, requiring more extensive surgical intervention. Additionally, the removal of bone in this area can weaken the ramus of the mandible, increasing the risk of fracture during extraction.
Which nerve is affected if a patient is unable to gaze laterally to the left?
1) Right abducent
2) Right trochlear
3) Left abducent
4) Left trochlear
The left abducent nerve (cranial nerve VI) innervates the lateral rectus muscle, which is responsible for lateral eye movement.
The gold casting alloy indicated for use in dental bridges is:
1) Type I
2) Type II
3) Type III
4) Type IV
ADC Test Answer: 4
Type IV gold casting alloys are suitable for use in bridges as they offer adequate strength and resistance to wear.
Naloxone reverses the actions of:
1) Morphine
2) Diazepam
3) Thiopentone
4) All of the above
Naloxone is an opioid antagonist that reverses the effects of opioids like morphine.
The active immunity offered by tetanus toxoid is effectively in nearly:
1. 25 % of the patients.
2. 50 % of the patients.
3. 75 % of the patients.
4. 100 % of the patients.
80 - 100 % so nearly 100 -- 75 % also equally correct
What is the purpose of the amber line in Winter's classification?
1) It shows the depth of the tooth below the alveolar crest
2) It indicates the amount of bone covering the tooth
3) It shows the path of eruption
4) It identifies the position of the tooth in the jaw
The amber line is drawn from the crest of interdental bone between the 1st and 2nd molars and extends posteriorly, showing how much bone covers the impacted tooth.
What is the primary factor contributing to the increased prevalence of
edentulism in older adults?
1) Decreased salivary flow
4) Reduced bone density
3) Systemic diseases and their treatment
4) Dental anxiety
Systemic diseases such as diabetes and cardiovascular diseases,
along with their treatments, can impact oral health and increase the risk of
tooth loss.
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.
Flaccid lip, digit sucking, high frenum attachment & poor muscle tone are the etiology of :
1) Anterior cross bite
2) Diastema
3) Anterior bite
4) Posterior cross bite
Midline diastema Etiology Normal developing dentition - (Ugly Ducking Stage) Parafunctional habits Retrognathic mandible/ Prognathic mandible Frenum attachments
- Flaccid lips along with poor muscle tone
- Simple Tongue thrust can cause anterior open bite as well as diastema
- Thumb sucking or digit sucking for a prolonged time period
Mesio-distal angulation of teeth
Tooth anomalies (eg.
Pathological (Juvenile periodontitis)
Which of the following is not one of the consequences of using Herbst appliance in treatment of Class II malocclusion?
1) Increase in mandibular growth
2) Over corrected Class I molar relation
3) Increase in SNB angle
4) Increase in overjet
Solution The following are the effects when Herbst appliance used for treatment of Class II malocclusion:
1.
2. Increased mandibular growth
3. Distal driving of maxillary molars which helps to achieve molar relation.
4. Reduction of overjet by increasing mandibular length and proclination of mandibular incisors.
5. Inhibitory effect on sagittal maxillary growth
6. Weislander suggested double contour of glenoid fossa which indicates anterior transformation of glenoid fossa
7. Increased SNB angle and decreased SNA angle.
What is the typical presentation of trigeminal neuralgia?
1) Constant dull pain
2) Intermittent sharp pain triggered by stimuli
3) Pain that worsens at night
4) Pain associated with swelling
Trigeminal neuralgia is characterized by sudden, severe, and sharp facial pain that can be triggered by light touch or other stimuli.
Which two teeth can only be removed by rotation?
1) Maxillary central incisors and mandibular central incisors
2) Maxillary second premolars and mandibular first molars
3) Maxillary central incisors and mandibular second premolars
4) Maxillary first molars and mandibular central incisors
These teeth have single roots and are not multi-rooted, allowing for removal by rotation only.
How should a dentist ensure that a patient fully understands the
information provided during the informed consent process?
1) Use complex medical terminology
2) Ask if the patient has any questions and encourage discussion
3) Provide the information in writing only
4) Assume the patient understands based on their age
Explanation: Engaging the patient in discussion and encouraging questions helps
ensure they understand the information provided, which is crucial for informed
consent.
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.
All are fluorinated anaesthetics except:
- Methoxyflurane
- Halothane
- Sevoflurane
- Isoflurane
Halothane does not undergo desfluorination under normal conditions (defluorinated only under anaerobic conditions).
If a partially set material is seated, the die material obtained from such impression will be
1) Oversized
2) Undersized
3) Retains its dimension due to elasticity of the material
4) Dimensions will be un changed but may leave a rough surface
If Impression tray comprising of elastomeric impression material is seated too late as elasticity starts to develop, raised seating pressure is applied to overcome the stiffness of impression material. Because of recovery of excessive elastic deformation there is development of distortion
The die produced in the inaccurate impression is too narrow and too short.
Elgiloy arch wire is a 1. Cobalt chromium nickel alloy 2. Gold alloy 3. Optical fiber arch wire 4. Beta titanium arch wire
Dental Material Answer: 1Elgiloy arch wire is a Cobalt chromium nickel alloy
What type of sedation is preferred for a patient with a severe gag reflex?
1) Oral
2) Topical
3) Inhalation or IM/IV
4) None
For patients with a severe gag reflex, sedation methods that provide deeper relaxation, such as inhalation sedation or intramuscular/intravenous (IM/IV) sedation, are preferred to help manage anxiety and facilitate treatment.
Which type of caries is characterized by a brown or black appearance and is
resistant to caries?
1) Acute caries
2) Chronic caries
3) Arrested caries
4) Incipient caries
Arrested caries are brown or black and become caries-resistant, especially when exposed to fluoride.
The afferent limb to the upper epiglottis is via which nerve?
1) Superior laryngeal branch of the vagus nerve (CN 10)
2) Inferior laryngeal branch of the vagus nerve (CN 10)
3) Glossopharyngeal nerve (CN 9)
4) Lingual nerve (CN 5)
The glossopharyngeal nerve (CN 9) is a mixed cranial nerve that carries both
sensory and motor fibers.
The superior laryngeal branch of the vagus nerve (CN 10) innervates the mucous
membranes of the larynx below the level of the epiglottis, while the inferior
laryngeal branch innervates the muscles of the larynx, not the epiglottis. The
lingual nerve (CN 5) is primarily involved in the sensation of the anterior
two-thirds of the tongue and the mucosa of the floor of the mouth, not the
epiglottis.
When a tooth is replanted after avulsion and presents no pain, the most likely diagnosis is:
1) External resorption
2) Internal resorption
3) No significant damage
4) Pulp necrosis
ADC Test Answer: 2
Internal resorption may occur in avulsed teeth, especially if they were outside the socket for an extended period, even without presenting immediate pain.
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.
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.
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.
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.
If a biochemical test gives the same reading for a sample on repeated testing, it is inferred that the measurement is:
1. Precise.
2. Accurate.
3. Specific.
4. Sensitive.
repeatablity of test is precision and getting results within reference range is accuracy
A successful stellate ganglion block can produce:
1) Hypotension
2) Horner syndrome
3) Brachial plexus involvement
4) All of the above
Local Anesthesia Answer: 4
All of the above Successful stellate ganglion will produce Horner syndrome (ptosis, miosis.
Which of the following types of publications is the most reliable source for making evidence-based clinical decisions?
1) Dental manufacturer’s product information.
2) Professional association journals.
3) Systematic review articles from dental research journals.
4) Case reports in dental journals.
Scientific Literature Answer: 3Systematic reviews provide high-quality evidence by summarizing and analyzing multiple studies, offering a reliable foundation for clinical decision-making.
What does N0 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
N0 indicates that there are no regional lymph nodes involved in the metastatic process, which is an important factor in cancer staging.
What is the typical histological finding in pemphigus vulgaris?
1) Acanthosis
2) Acantholysis
3) Hyperkeratosis
4) Basal cell hyperplasia
Acantholysis, or the loss of adhesion between keratinocytes, is a hallmark of pemphigus vulgaris, leading to the formation of vesicles and ulcers.
Koplik's spots are seen in the oral cavity of patients with
1) chickenpox.
2) mumps.
3) measles.
4) scarlet fever.
E. smallpox.
Koplik's spots are small, white spots found on the mucous
membranes of the cheeks in the early stages of measles. These spots are
pathognomonic for the disease and typically appear before the rash. They are not
associated with the other conditions listed: chickenpox, mumps, or scarlet
fever.
Which of the following viruses has the greatest chance of transmission in an
occupational exposure to a vaccinated
dental healthcare worker?
1) Hepatitis B
2) Hepatitis C
3) HIV.
4) HPV.
Hepatitis C has a significant risk of blood borne transmission, especially via
needle sticks.
What is the primary concern with a mesinangular impaction?
1) It is highly susceptible to infection
2) It is the most difficult to remove
3) It has the highest risk of damaging the adjacent teeth
4) It is associated with the lowest incidence of pericoronitis
Mesinangular impaction is the most common and least difficult type of impaction but is often associated with pericoronitis due to its position and difficulty in maintaining oral hygiene.
Recurrent unilateral submandibular swelling and pain just prior to meals is
indicative of
1) an odontogenic infection.
2) sialolithiasis.
3) ranul1)a
4) sarcoidosis.
E. Sjögren’s syndrome.
Salivary stones block ducts, causing pain and swelling when saliva production
increases, such as during meals.
Which of the following is used for the treatment of chlamydia infection in pregnancy?
1) Tetracycline
2) Erythromycin
3) Azithromycin
4) Doxycycline
Azithromycin Preferred agent for treatment of chlamydia infection in pregnancy in azithromycin.
It is given as a single dose of 1g leading to high compliance rate.
About lidocaine all are true, except:
1) Dose need to altered in renal failure
2) Loading dose before infusion
3) It is little effected by heat & pH
4) Prolongs refractory period
Local anesthetics are poorly water soluble and this limits their renal excretion (of unchanged drug) to less than 5%.
Informed consent is primarily based on which ethical principle?
1) Justice
2) Autonomy
3) Beneficence
4) Veracity
Ethics and Jurisprudence Answer: 2Autonomy refers to the right of patients to make informed decisions about their own healthcare. Informed consent ensures that patients have the necessary information to exercise this right.
What is the primary mechanism by which S. mutans contributes to the
formation of dental caries?
1) Production of lactic acid
2) Formation of dental plaque
3) Secretion of hydrogen sulfide
4) Breakdown of collagen in dentin
S. mutans produces glucosyltransferases that convert dietary sugars into extracellular polysaccharides and lactic acid, which lowers the pH and leads to demineralization of tooth structure.
Which of the following is NOT a standard precaution recommended to prevent the spread of infection in the dental setting?
1) Hand hygiene
2) Use of personal protective equipment (PPE)
3) Sterilization of reusable instruments
4) Sharing of patient-care items
Standard precautions in the dental setting include hand hygiene, use of PPE, and sterilization of reusable instruments.
What is the recommended technique for removing bone during an extraction to prevent bone necrosis?
1) High-speed handpiece with continuous coolant irrigation
2) Chisel and mallet with manual pressure
3) Surgical bone saw
4) Laser bone removal
Using a high-speed handpiece with continuous coolant irrigation allows for precise bone removal and minimizes thermal necrosis of the bone.
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
Maximum decrease in cardiac output is caused by:
1) Enflurane
2) Halothane
3) Sevoflurane
4) Methoxyflurane
Cardiac output is maximally decreased by enflurane followed by halothane.
Least likely to exhibit cross-sensitivity with amide or ester local anesthetics.?
1) Tetracaine (pontocaine)
2) Lidocaine (Xylocaine)
3) Dyclonine (Dyclone)
4) Mepivacaine (Carbocaine)
Dyclonine (Dyclone) is the least likely to exhibit cross-sensitivity with amide or ester local anesthetics.
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.
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.
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
Cardiac or central nervous system toxicity may result when standard lidocaine doses are administrated to patient with circulatory failure. This may be due to the following reason:
1) Lidocaine concentration are initially higher in relatively well perfused tissues such as brain and heart
2) Histamine receptors in brain and heart get suddenly activated in circulatory failure
3) There is sudden outburst of release of adrenaline, noradrenaline and dopamine in brain and heart
4) Lidocaine is converted into toxic metabolite due to longer stay in liver
Lignocaine (as with other lipid soluble anaesthetic agents) initially reaches to well perfused areas like brain and heart so in circulatory failure blood from non vital structures is diverted to vital structures like brain and heart and patient can develop toxic levels.
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 happens to the pH of the mouth after exposure to cariogenic foods?
1) It increases
2) It decreases
3) It remains the same
4) It fluctuates
Cariogenic bacteria ferment sugar, producing lactic acid that lowers the pH of the mouth, leading to demineralization of tooth structure.
What is the primary reason for the increased incidence of root caries in the
elderly?
1) Poorer oral hygiene
2) Decreased salivary flow
3) Increased exposure of root surfaces due to gum recession
4) Decreased tooth enamel quality
Gum recession, a common issue in the elderly, exposes the softer root surfaces to decay-causing bacteria, leading to an increased incidence of root caries.
The Nitrate which does not undergo first pass metabolism is:
1) Isosorbide mononitrate
2) Nitroglycerine
3) Pentaerythritol tetranitrate
4) Isosorbide dinitrate
In humans, isosorbide mononitrate is not subject to first pass metabolism in the liver.
This reduces the intra- and interindividual variations in plasma evels and leads to predictable and reproducible clinical effects.
Norepinephrine is stored at the Postganglionic parasympathetic nerve endings
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
The following prevent re-uptake of noradrenaline
1) isoprenaline
2) dopamine
3) clomipramine
4) propranolol
Is a TCA- block neuronal uptake of noradrenaline and serotonin.
What is the correct order of donning personal protective equipment (PPE) in the dental setting?
1) Gown, mask, gloves, face shield
2) Gloves, mask, gown, face shield
3) Mask, gown, gloves, face shield
4) Face shield, gown, mask, gloves
The correct order of donning PPE in the dental setting is to first put on a mask to protect the mouth and nose, then a gown to cover the clothes, followed by gloves to protect the hands, and finally a face shield to protect the eyes, nose, and face from splashes and sprays.
A permanent tooth erupting in the mouth of an 11 years old child is most likely 1. maxillary lateral incisor 2. mandibular second bicuspid 3. maxillary third molar 4. rnandibular central incisor
Dental Anatomy Answer: 2A permanent tooth erupting in the mouth of an 11 years old child is most likely mandibular second bicuspid
What is the radiograph of choice for new edentulous patients?
1) Periapical
2) Bitewing
3) Panoramic
4) Cone beam CT
Periapical radiographs are the best choice as they allow for detailed visualization of specific problem areas in newly edentulous patients.
What type of caries is characterized by a rapid progression and is often light-colored?
1) Chronic caries
2) Arrested caries
3) Acute/rampant caries
4) Incipient caries
Acute/rampant caries are immediately damaging, light-colored, and very infectious.
What is the role of dental records in forensic dentistry?
- To establish the identity of a deceased person
- To determine the cause of death
- To evaluate the dental health of the general population
- To monitor dental insurance fraud
Antemortem records can be used by forensic odontologists to help identify individuals in the event of death.
For a patient with bulimia, what is the best treatment option?
1) Dental restoration
2) Dietary counseling
3) Referral to a psychologist
4) Material restoration
A multidisciplinary approach to bulimia involves addressing psychological factors; referral for psychiatric evaluation is crucial for effective management of this eating disorder.
First local anaesthetic used was:
1) Lignocaine
2) Mepivacaine
3) Cocaine
4) Bupivacaine
Cocaine was the first local anaesthetic used by Carl Koller for anaesthetizing the cornea.
What is the white line in Winter's classification of third molar impaction?
1) Indicates the level of the tooth's root apex
2) Indicates the amount of bone covering the tooth
3) Indicates the difference in occlusal level of 1st and 2nd molars
4) Indicates the depth of the tooth below the alveolar crest
The white line in Winter's classification runs touching the occlusal surfaces of the 1st and 2nd molars and extends posteriorly, indicating the occlusal plane and the level of the impacted tooth.
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
What is the primary treatment for pemphigus vulgaris?
1) Topical steroids
2) Systemic corticosteroids
3) Antihistamines
4) Antibiotics
Systemic corticosteroids are the mainstay of treatment for pemphigus vulgaris to control the autoimmune response and reduce blister formation.
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.
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.
Which of the following is the best practice for communicating with an anxious patient?
1) Speak in technical jargon
2) Use a calm, reassuring tone and simple language
3) Avoid eye contact to reduce pressure
4) Give a detailed explanation of all possible complications
Clear, simple language delivered in a calming tone can help reduce anxiety and build the patient's trust.
What is the recommended action if a dental record contains an error?
1) Erase the error
2) Cross out the error with a single line and write the correction
3) Ignore the error
4) Rewrite the entire record
Errors should be corrected transparently to maintain the integrity of the record.
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: 4The nerve to masseter passes through the mandibular notch to enter the muscle on its medial surface
What is the purpose of a comprehensive medical history in dental care?
- To bill the patient's insurance
- To tailor treatment plans based on the patient's health
- To determine the patient's credit score
- To market dental services to the patient
Knowing the patient's medical history helps the dentist make informed decisions about the patient's treatment and overall care.
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 percentage of hypertension cases is accounted for by primary or essential hypertension? 1) 50% 2) 60% 3) 75% 4) 90%
Pathology and Medicine Answer: 4Primary or essential hypertension makes up about 90% of all hypertension cases, typically with no identifiable cause and is associated with factors like genetics, smoking, and obesity.
What is the best way to handle a chemical spill in a dental office?
1) Clean it up with paper towels and dispose of them in regular trash
2) Follow the Material Safety Data Sheet (MSDS) guidelines for the specific chemical
3) Ignore it if it seems minor
4) Wait for someone else to handle it
Occupational Hazards Answer: 2Following the MSDS guidelines ensures that the spill is handled safely and effectively, minimizing risks to staff and patients.
A child presents with multiple bruises in various stages of healing. What should the healthcare provider do first?
1) Ask the child how they got the bruises
2) Report the findings to child protective services
3) Document the injuries and schedule a follow-up
4) Contact the parents for an explanation
When a child presents with signs of potential abuse, the healthcare provider should report the findings to child protective services immediately.