1. When removing caries, which of the following layers of dentin are affected, but not infected, and therefore do not need to be removed?Transparent dentinInfected dentinTurbid dentinNormal dentinQuestion 1 of 20 2. A patient complains of pain in tooth on taking hot food, the pain subsides on taking cold. Diagnosis is:Traumatic injuryReversible pulpitisInternal ResorptionPartial pulp necrosisQuestion 2 of 20 3. Second digit in 4-digit instrument formula indicatesBlade widthBlade anglePrimary cutting-edge angleBlade lengthQuestion 3 of 20 4. Prior to reimplantation, tooth s soaked in 3% citric acid. This is done to:Increase surface reactivityEtch the surfaceRemove the PDLDisinfect the toothQuestion 4 of 20 5. Pulpal pain response isQuick and sharp when carried by unmyelinated c fibers.Quick and sharp when carried by myelinated c libers.Dull and throbbing when carried by myelinated c fibers.Dull and throbbing when carried by unmyelinated c fibers.Question 5 of 20 6. In comparison to amalgam restorations, composite restorations are _____.More technique-sensitiveStrongerNot indicated for Class II restorationsMore resistant to occlusal forcesQuestion 6 of 20 7. You are doing a deep occlusal preparation on tooth #30. The tooth was asymptomatic prior to treatment. All caries have been removed, but you notice a pinpoint mechanical pulpal exposure. Hemorrhage is easily stopped. The treatment of choice is:Root canal therapyIndirect pulp capDirect pulp capPulpotomyQuestion 7 of 20 8. According to ADA specifications, ISO #2 endodontic instruments2 variable tapers across the length of the instrumentVariable taper instrument across the lengthInstruments with cutting tipConstant taper of 0.02mm/mm across the lengthQuestion 8 of 20 9. A Class V buccal cavity is to be prepared on a mandibular first premolar under a Rubber dam clamped on the tooth with a No.212 clamp. The hole for the first Premolar should be punchedSlightly facial to the other holes in the archAs is normally doneSlightly lingual to the other holes in the archSmaller than normalQuestion 9 of 20 10. Retention for a Class 5 amalgam cavity is obtained byGrooves placed mesially and distallyUndercutting the occlusal and gingival wallsGrooves placed cervicallyUndercutting all the wallsQuestion 10 of 20 11. The principal goals of bonding are _____.Esthetics and reduction of postoperative sensitivitySealing and thermal insulationSealing and retentionStrengthening teeth and estheticsQuestion 11 of 20 12. The earliest and most common symptom associated with an inflamed pulp is:A dull throbbing pain on masticationSensitivity to hot and/or cold stimuliA persistent feeling of discomfortPain on percussionQuestion 12 of 20 13. In which of the following scenarios would you consider using solvent softened custom conesAll of the aboveAfter an apexification procedureAn irregular apical portion of the canalAn abnormally large apical portion of the canalQuestion 13 of 20 14. Which of the following materials could be used to cement a bridge and fill a cervical lesion?Zinc PhosphateGlass IonomerZinc PolycarboxylateZinc Oxide-EugenolQuestion 14 of 20 15. Ideal property of a root canal sealer is:Fill the space between solid core material and pulp canalSeals and fills lateral canalCircular in morphology.Extrudes beyond the apical foramen.Question 15 of 20 16. A full cast crown which fails to seat properly and is rocking. This could be due to all of the following, exceptInvestment incompletely removed from the dieA void on the inner occlusal surface of the castingRemoval of a portion of the stone die when a bubble was removed from the master castA bubble on the master cast in the buccal cusp areaQuestion 16 of 20 17. A classic teardrop-shaped periradicular lesion on a radiograph can be indicative of a vertical root fracture. The prognosis of a vertical root fracture is hopeless, and the tooth should be extracted.First statement is false, second is true.First statement is true, second is false.Both statements are true.Both statements are false.Question 17 of 20 18. It has been established thatHIV is less fragile than the hepatitis B virus.Transmission of tuberculosis is primarily blood-borne.Each patient should be considered potentially infectious.Exposure to HIV is more likely than exposure to hepatitis B virus.Question 18 of 20 19. Retention form for a Class II amalgam preparation is ensured byThe gingival seatAll of the aboveParallelism of buccal and lingual wallsGrooves placed at the expense of the axiofacial and axiolingual line anglesQuestion 19 of 20 20. A cervical lesion should be restored if it _____.Is causing gingival inflammationIs very sensitiveIs cariousAll of the aboveQuestion 20 of 20 Loading...
