Description : .In regard to Gold casting alloys which one is available for bridge A. Hard alloy “Type IV B. Type II
Last Answer : A. Hard alloy “Type IV
Description : What sort of alloys do you use for bridges: A. Ductile B. Hard C. High sensitivity
Last Answer : B. Hard
Description : The volume shrinkage of methyl metacrylate monomer when polymerized is:** A. 12% B. 15% C. 18% D. 21%
Last Answer : D. 21%
Description : The percentage of Sinhala-speakers in Sri Lanka is the Tamil-speakers are percent. a. 74% and 18% b. 75% and 25% c. 59% and 41% d. 80% and 20%
Last Answer : a. 74% and 18%
Description : Which of the following Gold casting alloys are available: A. Medium alloy “Type II” B. ard alloy “Type III” C. Extra ard alloy “Type IV” D. All of the above
Last Answer : D. All of the above
Description : Why can Class IV gold not be used in cavity as a filling material: A. Can not be polished “burnished” B. The corrosive properties
Last Answer : A. Can not be polished “burnished”
Description : In cementing Maryland or Roche bridges, the effect is generally to, a. Lighten the colour of the teeth by the opacity of the cement b. Darken the colour of the abutment by the presence ... lingual c. Have no detrimental colour effect. d. Darken the abutment teeth by incisal metal coverage
Last Answer : c. Have no detrimental colour effect.
Description : Titanium is used in dentistry A. In a very pure form in implants B. In an alloy with aluminium in casting for crowns and bridges C. In an alloy with nickel in orthodontic wires D. A and B E. A, B and C
Last Answer : E. A, B and C
Description : Where do Maryland bridges lose retention often: A. Resin-metal B. Resin enamel C. Resin layer
Last Answer : A. Resin-metal
Description : 18 years old female weighting 52Kg and 163cm tall. On dental examination erosion of teeth on the most of her lingual surfaces is clearly showing. Dietary history revealed a daily rate of 5000 to 7000 ... . Alcoholism B. Drug abuse C. Bulimia D. Excessive smoking E. Diabetic mellitus type I
Last Answer : C. Bulimia
Description : Dental impression materials are hydrocolloids of: A. The emulsoid type B. The suspension type C. The sol type D. The gel type E. None of the above
Last Answer : A. The emulsoid type
Description : A patient has developed a sever chest pain and difficulties in breathing while in the dental chair. Your initial response is: a. Administer glycerine trinitrate and monitor patient in upright ... required until confirmed as MI by ECG d. Patient has myocardial infarction as confirmed by ECG
Last Answer : a. Administer glycerine trinitrate and monitor patient in upright position.
Description : At birth, some calcified dental tissues are presented, a.All deciduous teeth and all permanent incisors. b.All deciduous teeth and permanent central incisors. c.All deciduous teeth and the first permanent molars. d.Deciduous teeth only.
Last Answer : c.All deciduous teeth and the first permanent molars.
Description : As far as surgical removal of wisdom teeth is concerned which of the following is true? a- Prophylactic prescription of antibiotic reduces dramatically the chances of infection. b- Raising a lingual ... e- The use of vasoconstrictors in local anaesthetics will increase the chances of infection.
Last Answer : b- Raising a lingual flap will increases the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve.
Description : A patient on the dental chair has cardiac arrest. What is INCORRECT, A. Observing the vital signs and check that the air way is clear is at high importance B. Expired air has 15% O2 only, ... D. Intermittent positive pressure is better than mouth to mouth when it has been given at the same rate.
Last Answer : C. Intermittent positive pressure at the rate of 40/min will reduce the chances of cerebral hypoxia
Description : for dental caries to progress in dentine, A. the dentine must contain soluble collagen B. enamel must contain glycoproteins C. diet must contain simple carbohydrate D. diet must contain polysaccharides E. pulp must contain complement
Last Answer : C. diet must contain simple carbohydrate
Description : A patient in your dental chair shows chest pain, weak pulse and dysponea, what is your initial management, A. Give a nitro-glycerine tablet and keep the patient up seated B. Put the patient in supine position C. Do nothing and wait until the symptoms go
Last Answer : A. Give a nitro-glycerine tablet and keep the patient up seated
Description : What is the most important factor to reduces dental irradiation, A. Speed of film B. Collimation C. Filtration D. Cone shape and length
Last Answer : A. Speed of film
Description : Dental caries of the proximal surfaces usually starts at, A. Somewhere between the ridge and the contact area B. Just gingival to contact areas C. Just about the gingival margin
Last Answer : B. Just gingival to contact areas
Description : Two conditions of enamel facilitate the post eruptive uptake of fluoride: A. Hyper mineralisation and surface dentine B. Surface demineralisation and hypo mineralisation C. Dental fluorosis and enamel opacities
Last Answer : B. Surface demineralisation and hypo mineralisation
Description : The developing time for dental x ray should be: A. 5 minutes at 20ºC B. At least 10 minutes C. Until it clears up D. 2 minutes at 40ºC
Last Answer : A. 5 minutes at 20ºC
Description : What is TRUE about Benzodiazepine and diazepam in 5-10mg oral dose used for oral sedation in dentistry: A. Good analgesic effect if given 1 hour prior to dental sessions B. Would be reversed ... Benzodiazepam C. Post operative headache D. There is a profound amnesic action and no side affects
Last Answer : B. Would be reversed by flumazepil because it is a Benzodiazepam
Description : A patient with a history of angina suffers an attack while in the dental chair. Prompt relief can be anticipated in MOST instances from: A. Oral administration of short acting ... epinephrine D. Sublingual administration of glyceryl tri-nitrate E. Putting the patient in upright position
Last Answer : D. Sublingual administration of glyceryl tri-nitrate
Description : Compared to dental plaster all die stones: A. Require less gauging water B. Require more gauging water C. Require the same quantity of gauging water D. Are beta-hemihydrate E. None of the above
Last Answer : A. Require less gauging water
Description : What is NOT TRUE about Hydrotherapy (Water Jet): A. Removes pellicle from tooth surface B. Removes dental plaque C. Causes no harm to gingiva
Last Answer : B. Removes dental plaque
Description : Which of the following has proven to be the MOST important in community preventive program: A. Dental awareness of the community B. Institution of oral hygiene measures C. Water fluoridation
Last Answer : C. Water fluoridation
Description : The most common cause of fracture at the isthmus of class II dental amalgam restoration is: A. Delayed expansion B. Inadequate depth at the isthmus area C. Inadequate width at the isthmus area
Last Answer : B. Inadequate depth at the isthmus area
Description : Odontogenic cysts develop from the following structures except: A. Reduced enamel epithelium of tooth crown B. Dental lamina dura C. Epithelium trapped after sutures D. ertwig’s root sheath
Last Answer : C. Epithelium trapped after sutures
Description : In which condition do you have to prescribe antibiotics prior to dental treatment: A. Rheumatic fever B. Sub-acute bacterial endocarditis C. By pass D. Valve replacement E. Uncontrolled diabetes F. All of the above
Last Answer : F. All of the above
Description : In patients with exposed root surfaces: A. Ask to use low abrasive dentifrices B. It is because of dental hypersensitivity
Last Answer : A. Ask to use low abrasive dentifrices
Description : What is an important requisite for fillers in dental composite restorative resins in load bearing areas: A. Sub micro sized particles B. High coefficient of thermal expansion C. High in content (High filler)
Last Answer : C. High in content (High filler)
Description : Which of the following is NOT TRUE in regard to lateral periodontal cyst** A. It is more common in anterior region B. It occurs more in maxilla than mandible C. Probable origin is from ... . Encountered in the cuspid-premolar region of the mandible, derived from the remnants of the dental lamina
Last Answer : A. It is more common in anterior region B. It occurs more in maxilla than mandible
Description : A patient has developed a sever chest pain and difficulties in breathing while in the dental chair. Your initial response is: A. Administer glycerine trinitrate and monitor patient in upright ... required until confirmed as MI by ECG D. Patient has myocardial infarction as confirmed by ECG
Last Answer : A. Administer glycerine trinitrate and monitor patient in upright position
Description : Which is the only dental tissue that loses its formative cells as it matures: A. Enamel B. Dentine C. Pulp D. Cementum
Last Answer : A. Enamel
Description : What is the MOST important role of saliva in preventing dental caries: A. Buffering action
Last Answer : A. Buffering action
Description : The advantage of using dental floss over rubber point interdentally: A. Remove plaque and debris in interproximal surfaces B. Polish C. Massage of the interdental papillae D. Aid and recognise subgingivally
Last Answer : A. Remove plaque and debris in interproximal surfaces
Description : Dental plaque produces: A. Chelation B. Dental caries C. Acids
Last Answer : C. Acids
Description : When restoring weakened cusps with dental amalgam you should consider: A. 2mm reduction while forming a flattened surface B. 2mm reduction while following the original contour of the cusps C ... forming a flattened surface D. 4mm reduction while following the original contour of the surface
Last Answer : A. 2mm reduction while forming a flattened surface
Description : In young children what is the commonest finding after dental complaint: A. Acute periodontal abscess B. Chronic periodontal abscess C. Apical abscess D. Chronic alveolar abscess
Last Answer : D. Chronic alveolar abscess
Description : Which of the following is true in relation to dental decay? A. Foods that require vigorous mastication will increase salivary flow and reduce PH B. Tooth brushing immediately after meals is most ... E. The Stephan Curve describes an increase in PH during a meal with resultant of demineralisation
Last Answer : E. The Stephan Curve describes an increase in PH during a meal with resultant of demineralisation
Description : What is the affect of office dental prophylaxis of regular six month intervals on children's oral health? A. Reduce caries incidence by approximately 30% B. Provide a long term improvement in ... term improvement in oral hygiene D. Prevent gingivitis E. Reduce the need for patient cooperation
Last Answer : C. Provide a short term improvement in oral hygiene
Description : At birth, some calcified dental tissues are presented, M07 ******* A. All deciduous teeth and all permanent incisors B. All deciduous teeth and permanent central incisors C. All deciduous teeth and the first permanent molars D. Deciduous teeth only
Last Answer : C. All deciduous teeth and the first permanent molars
Description : For dental caries to progress in dentine, A. The dentine must contain soluble collagen B. Enamel must contain glycoproteins C. Diet must contain simple carbohydrate D. Diet must contain polysaccharides E. Pulp must contain complement
Last Answer : C. Diet must contain simple carbohydrate
Description : Of all the factors that increase the resistance of teeth to dental caries, THE MOST EFFECTIVE is,** A. The general nutrition of a child during the period of tooth formation B. The ... eruption D. Sufficient intake of calcium and Vitamin D during the period of enamel mineralization and maturation
Last Answer : B. The intake of fluoride during the period of enamel mineralization and maturation
Description : Which of the following is a typical consequence of dental crowding, assuming no primary tooth has been lost prematurely? A. Overlapping of lower incisors B. Palatal displacement of upper canines C. Impaction ... and first molars D. Mesial tipping of 16 and 26 E. Rotation of 16 and 26
Last Answer : A. Overlapping of lower incisors
Description : You wish to purchase a dental X ray machine and have the choice between 60kVp and 70kVp machines. With single change from 60kVp to 70kVp what would the approximate affects on exposure time?CHECK A. No effect B. Half the time C. Double D. Quarter E. Triple the time
Last Answer : B. Half the time
Description : As far as surgical removal of wisdom teeth is concerned, which of the following is true?**CHECK A. Prophylactic prescription of antibiotic reduces dramatically the chances of infection B. Raising ... root E. The use of vasoconstrictors in local anaesthetics will increase the chances of infection.
Last Answer : C. Prophylactic prescription of dexamethasone will dramatically reduces post operative swelling
Description : A 65 years-old woman arrived for dental therapy. The answered questionnaire shows that she is suffering from severe cirrhosis. The problem that can be anticipated in the routine dental ... oral infection D. Increased tendency to syncope E. Difficulty in achieving adequate local anaesthesia
Last Answer : B. Tendency towards prolonged haemorrhage
Description : A 45 years-old patient awoke with swollen face, puffiness around the eyes, and oedema of the upper lip with redness and dryness. When he went to bed he had no swelling, pain or ... B. Angioneurotic oedema C. Infectious mononucleosis D. Acute maxillary sinusitis E. Acute apical periodontitis
Last Answer : B. Angioneurotic oedema
Description : The most common cause of failure of the IDN “Inferior Dental Nerve” block is, A. Injecting too low B. Injecting too high
Last Answer : A. Injecting too low