1. Possible etiology of internal resorption:The presence of low grade chronic pulpitisFurcation involvementLuxation injuryNecrosis of pulpQuestion 1 of 20 2. All of the following are factors in discoloration of tooth following a big amalgam filling except:Presence of voidsBetter marginal adaptationGood condensationAssociation with root surfaceQuestion 2 of 20 3. Time of application of glutaraldehyde pellet to pulp stump in glutaraldehyde pulpotomy is:4 minutes2 minutes5 seconds30 secondsQuestion 3 of 20 4. Which Root canal irrigant has been shown to cause allergic reactions:Hydrogen peroxideSuperoxide waterPovidone iodineChlorhexQuestion 4 of 20 5. A casting may fail to seat on the prepared tooth due to all of the following factors except _____.The occlusal of the prepared tooth was under reduced.Undercuts present in prepared tooth.Proximal contact(s) of casting are too heavy or too tight.Temporary cement still on the prepared tooth after the temporary restoration has been removed.Question 5 of 20 6. A radiopaque area is observed in the dentin underlying a three month old Class II amalgam restoration. Which of the following bases was used in the restorationZinc Oxyphosphate cementGlass ionomer cementCalcium hydroxideZinc oxide and eugenolQuestion 6 of 20 7. What distinguishes a base from a cement from a cavity liner?Degree of pulpal protectionBiocompatibility of materialDegree of hardnessFinal application thicknessQuestion 7 of 20 8. Retention for a Class 5 amalgam cavity is obtained byUndercutting the occlusal and gingival wallsGrooves placed mesially and distallyGrooves placed cervicallyUndercutting all the wallsQuestion 8 of 20 9. The outline form of a cavity preparation is defined as:"the shape or form of the cavity on the surface of the tooth""that form the cavity takes to resist dislodgement or displacement of the restoration""that form the cavity takes to resist the forces of mastication""the shape or form of the preparation after carious dentin has been excavated"Question 9 of 20 10. Which portion of a gas flame should be used to melt gold casting alloys?Blue - reducing zoneYellow - oxidizing zoneGreen - combustion zoneRed - heat zoneQuestion 10 of 20 11. Function of NAF for an avulsed tooth with extraoral time of more than 60 minutes isPrevent root resorption & AnkylosisPrevent sensitivityPrevent root cariesRevascularization of PDLQuestion 11 of 20 12. Which tooth has a wide variation in root canal anatomy:Maxillary second premolarMandibular first premolarMandibular second premolarMaxillary first premolarQuestion 12 of 20 13. Which of the following horizontal root fracture has most favourable prognosis:CervicalMiddleApicalCorona!Question 13 of 20 14. The primary contraindication(s) for the use of a composite restoration is (are) _____.Occlusal factorsInability to isolate the operating areaNonesthetic areasExtension onto the root surfaceQuestion 14 of 20 15. A dentin conditionerRaises surface free energy of dentinBonds the compositeThinly coats the collagen fibrils with resinRemoves the smear layerQuestion 15 of 20 16. The nerve fibers of the pulp areonly sensory.mainly myelinated fibers at the time of tooth eruption.easily damaged by inflammation.unevenly distributed throughout the pulp.Question 16 of 20 17. What percentage of EDTA is used for removal of smear layer in root canals:0.370.250.050.17Question 17 of 20 18. Chairside dry heat glass bead or salt sterilizationRequires a brief time to warm up.Serves as an emergency backup.Is verifiable.Can sterilize a large number of instruments.Question 18 of 20 19. Features of focal sclerosing osteomyelitis often include:A nonvital pulp test.None of the choices is true.A history of recent restoration of the tooth in question.A radiolucent lesion which, in time, becomes radiopaque.Question 19 of 20 20. Restoration of an appropriate proximal contact results in all of the following except _____.Provides increased retention form for the restorationProvides appropriate space for the interdental papillaMaintenance of the proper occlusal relationshipReduction/elimination of food impaction at the interdental papillaQuestion 20 of 20 Loading...
