1. In a post & core restoration, maximum amount of stress is concentrated:Distributed uniformly along the root lengthAt the root apexOn shoulder of preparationOn the distal side of root canalQuestion 1 of 20 2. Which portion of a gas flame should be used to melt gold casting alloys?Blue - reducing zoneGreen - combustion zoneYellow - oxidizing zoneRed - heat zoneQuestion 2 of 20 3. Distance of the blade from the shank to have anti-rotational design of instrument should be5 mm2 mm4 mm3 mmQuestion 3 of 20 4. Preventive measures to avoid cracked teeth, include all of the following, exceptNone of the abovePlacing pins horizontally into the dentin of the buccal and lingual internal walls and filling the cavity with amalgamOnlaying cusps with reverse bevelsAvoiding full coverageQuestion 4 of 20 5. Root canal therapy was completed on a nonvital tooth that suffered trauma 5 years prior. At the time of obturation, the tooth exhibited a periapical radiolucency on radiographic examination. Radiographically, healing should be visualized in:1 month6 weeks6 months1 weekQuestion 5 of 20 6. Enameloplasty is indicated in carious tooth when caries extend to a depth of:Upto 1/3rd the thickness of enamelUpto 1/2 the thickness of enamelUpto 2/3rd the thickness of enamelEnameloplasty can be done irrespective of fissure depthQuestion 6 of 20 7. Beveling the gingival cavosurface margin of the proximal box of a Class II amalgam preparation on a permanent tooth:Is contraindicated because of the low edge strength of amalgamhould remove unsupported enamel that may fractureIs unnecessary since the tooth structure in this area is strongShould result in a long bevelQuestion 7 of 20 8. When using electrosurgery for management of soft tissue, the deciding factor for the current setting isHealth of the patientProfoundness of anesthesiaTissue thicknessAmount of fluid control desiredQuestion 8 of 20 9. Patients scheduled for retreatmentMay complain of thermal response on an adjacent tooth.Should expect surgical intervention.Should expect successful resolution.May expect to have less interappointment pain.Question 9 of 20 10. Rake angle is:Angle between rake face & axis of burAngle between rake face & clearance faceAngle between clearance face & axis of burAngle between tooth & rake faceQuestion 10 of 20 11. What are the structural components of composite?A coupling agent and initiatorAll of the abovePolymer matrix and filler particlesPolymer matrix and coupling agentsQuestion 11 of 20 12. To avoid pulpal irritation below any restorative material, the minimum thickness of the dentine should be1.5mm2.5 mm2 mm1.3mmQuestion 12 of 20 13. The greatest potential hazard of chronic mercury toxicity occurs due toDuring amalgam restoration in a patient ,Ingestion of amalgam scrap during removal of old restorationInhalation of mercury vaporsSkin contact with mercuryQuestion 13 of 20 14. Which of the following is an inflammatory reaction to pulpal infection and necrosis characterized by rapid onset, spontaneous pain, tenderness of the tooth to pressure, pus formation and swelling of associated tissues?Acute apical abscessSymptomatic apical PeriodontitisChronic apical abscessAsymptomatic apical periodontitisQuestion 14 of 20 15. Pregnant patients in the first trimesterAre not candidates for electronic apex locators.Are not at risk from pharmacologic intervention.Should receive the normal x-ray dose for endodontic therapy.Should delay use of x-ray until the second trimester.Question 15 of 20 16. Which is the most likely to cause pulp necrosis?AvulsionExtrusionSubluxationConcussionQuestion 16 of 20 17. Which of the following is not true regarding the use of twist drills?A pumping action is used to aid in chip removalThey, cut only at the tipSpiral drills should never be used in a slow speed hand pieceThe drill must not stop rotating while in the pin holeQuestion 17 of 20 18. All of the following factors may affect endodontic anesthesia exceptTissue inflammationPrevious unsuccessful anesthesiaFatigueTooth typeQuestion 18 of 20 19. An 8-year-old patient presents to your office for an emergency visit with a traumatic exposure of tooth #9. The treatment of choice for this patient isVital pulp therapy/apexogenesisRoot-end closure procedure/apexificationPartial pulpectomyTraditional root canal therapyQuestion 19 of 20 20. Ha Primary tooth is avulsed, what should be done:Gently debrided and replaced in the socket with rigid splintingGently debrided and replaced in the socket with flexible splintingTreated with citric acid for 5 minutes before replantationNot replantedQuestion 20 of 20 Loading...