1. Function of post in an endodontically treated tooth is:Increases retention of the crown by providing parallel wallsReinforces the restoration and the remaining tooth structureProvide support to restorationPrevents root fractureQuestion 1 of 20 2. Gutta Percha and sealer form a monoblock known as:Tertiary monoblockPrimary monoblockQuaternary monoblockSecondary monoblockQuestion 2 of 20 3. When placement of proximal retention locks in Class II amalgam preparations is necessary, which of the following is incorrect?Even if deeper than ideal, one should use the axial wall as a guide for proximal lock placement.One should not prepare locks entirely in the axial wall.One should not undermine the proximal enamel.One should place locks 0.2 mm inside the DEJ to ensure that the proximal enamel is not undermined.Question 3 of 20 4. Core built up on a molar tooth should preferably be done with a chemically cured composite asIts lower viscosity allows free flow of resin also around pins and postLight cure resin lacks sufficient strength for a coreCore made with a light cure resin would be too opaque and esthetically unacceptableCore made with a light cure resin would be too brittle and would fracture easilyQuestion 4 of 20 5. Following restoration with gold, the tooth was sensitive to pressure, cold and heat, the best course of action is toRemove the restoration and start endodontic treatmentRemove the restoration and place a sedative temporary restorationRelieve the tooth of any occlusal contactObserve for two weeks and then decideQuestion 5 of 20 6. According to the Weine's classification of root canal system, 2 canals starting from the pulp chamber and ending as 2 orifices is classified as:Type IIIType TVType IType IIQuestion 6 of 20 7. One year after performing endodontic treatment on tooth #3, you take a new periapical radiograph and notice that there is still a lesion present. What is the most likely problem?You failed to locate a second mesiobuccal canalNothing, it takes more than 12 months for the bone to healYou failed to locate a second distobuccal canalYou failed to locate a second palatal canalQuestion 7 of 20 8. A 4-year-old child has fallen and hit his central incisor. Over time, the tooth has become increasingly more discolored and does not resolve. The most likely cause of the discoloration is:Endemic fluorosisEnamel hypocalcificationIntrapulpal hemorrhageSystemic drugsQuestion 8 of 20 9. Retrograde (apical resection surgery) treatment is considered over orthograde treatment (root canal retreatment) for patients by their dentist after their root canal therapy is considered to have failed. When should retrograde treatment be performed over orthograde treatment?If the goal of treatment is to eliminate microorganisms from the root canal systemWhen an expensive, yet coronally sealed restoration would have to be refabricated to accommodate rthograde treatmentWhen a patient is anxious about traditional retreatment proceduresWhen the root canal filling materials are easy to removeQuestion 9 of 20 10. The reduction of which of the following represents the most significant advantage of the acid etch techniqueReduced porosity of restorationMicroleakageCoefficient of thermal expansion of restorative materialShrinkage of restorative materialQuestion 10 of 20 11. What distinguishes a base from a cement from a cavity liner?Final application thicknessDegree of pulpal protectionDegree of hardnessBiocompatibility of materialQuestion 11 of 20 12. For a gold casting alloy, which of the following is added primarily to act as a scavenger for oxygen during the casting process?ZincCopperPalladiumSilverQuestion 12 of 20 13. The last step in cavity preparation isFinishing of enamel wallsResistance - retention formDebridementRemoval of cariesQuestion 13 of 20 14. Cavity walls of a Class II inlay are:Kept parallel to each otherMeet external surface at a butt jointTapered occlusallyFlared occlusallyQuestion 14 of 20 15. Which one of the following is a caries assessment test:Benedict testLugol's iodineSalivary reductase testCariogramQuestion 15 of 20 16. Restoration of an appropriate proximal contact results in all of the following except _____.Provides appropriate space for the interdental papillaProvides increased retention form for the restorationMaintenance of the proper occlusal relationshipReduction/elimination of food impaction at the interdental papillaQuestion 16 of 20 17. At what stage is endodontic treatment considered complete?When a temporary restoration is placed and the rubber dam removed.When canals are seared off and plugged.When the patient is asymptomatic.When the coronal restoration is completed.Question 17 of 20 18. Flare-ups occur more oftenIn the afternoon and evening.In endodontic treatment of pulpless teeth.In teenagers.In endodontic treatment of vital teeth.Question 18 of 20 19. Necrosis affects periapical cementum less than bone because:Cementum is more resistant to ResorptionCementum is vascular while bone is avascularMore number of pathways of spread of inflammation in boneInfection involves bone preferentiallyQuestion 19 of 20 20. Rool-filling materials must below cost.easily dissolved.biocompatible.rigid.Question 20 of 20 Loading...
