1. The last step in cavity preparation isFinishing of enamel wallsRemoval of cariesDebridementResistance - retention formQuestion 1 of 20 2. Which is not a property of sodium hypochlorite (NaOCl)?Microbicidal activityChelationFlotation of debris and lubricationTissue dissolution at higher concentrationsQuestion 2 of 20 3. Pulpal pain response isQuick and sharp when carried by a-delta myelinated nerve fibers.Dull and throbbing when carried by a-delta myelinated nerve fibers.Dull and throbbing when carried by a-delta unmyelinated nerve fibers.Quick and sharp when carried by a-delta unmyelinated nerve fibers.Question 3 of 20 4. The indications for periradicular surgery include all of the following except which one?Treatment for a nonrestorable tooth.Procedural accidents during previous nonsurgical endodontic treatment.Failed nonsurgical endodontic treatment and persisting radiolucency.Irretrievable separated files in the canals.Question 4 of 20 5. The absence of which layer of dentin predisposes it to internal resorption by cells present in the pulp?Secondary dentinMantle dentinPredentinCircumpulpal dentinQuestion 5 of 20 6. A pin channel perforates the external surface of the tooth, all other factors are favorable, the next logical course of action should be toSeal the channel with gold foil and observe the tooth for six weeks before restoringClean the channel and seal it with calcium hydroxide cementPlace a pin in the channel provided there is no extension beyond the tooth surfaceLine the channel with cavity varnish and cement the pin with inc phosphate cementQuestion 6 of 20 7. Tooth with definite single root canal:Maxillary central incisorMaxillar?y canineMaxillary second premolarMandibular first premolarQuestion 7 of 20 8. A patient reports with acute apical abscess. Drainage is established through emergency root canal access. Should the access opening be kept open till the next appointment:After immediate drainage, patient should be made to sit for some time; canal should be closed when it can be driedIt should never be kept openYes, if swelling is presentYes, only in weeping canalsQuestion 8 of 20 9. 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 weeks1 week6 monthsQuestion 9 of 20 10. Ultraviolet light-curing resin systems are superior to visible lightcuring resin systems because a greater depth of resin can be cured by UV light.The statement is correct but the reason is incorrectThe statement is incorrect but the reason is correctBoth statement and reason are incorrectBoth statement and reason are correctQuestion 10 of 20 11. A patient complains of pain in tooth on taking hot food, the pain subsides on taking cold. Diagnosis is:Traumatic injuryPartial pulp necrosisInternal ResorptionReversible pulpitisQuestion 11 of 20 12. Which cells do not characterize the cellular response at the onset of pulpal inflammation?LymphocytesMacrophagesPolymorphonuclear (PMN) LeukocytesPlasma cellsQuestion 12 of 20 13. Most important factor in success of a replanted avulsed tooth:All of the aboveOperator skillPresence of a healthy periodontiumDuration of extraoral dry timeQuestion 13 of 20 14. 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:PulpotomyDirect pulp capIndirect pulp capRoot canal therapyQuestion 14 of 20 15. The primary function of root canal sealers is:To fill the residual space between the GP cones and canal walls following condensationTo prevent growth of microorganisms in periradicular areaTo fill the space between a loosely fitting GP cone and canal wallsTo aid in creating apical seal when gutta-percha cannot adequately seal the apexQuestion 15 of 20 16. Principle disadvantage of minocycline in triple antibiotic paste:Leads to enamel hypoplasiaAnaphylactic reactionsTeratogenicTooth stainingQuestion 16 of 20 17. Which of the following materials could be used to cement a bridge and fill a cervical lesion?Zinc PolycarboxylateGlass IonomerZinc Oxide-EugenolZinc PhosphateQuestion 17 of 20 18. Which of the following statements regarding ethylene diamine tetra-acetic acid (EDTA) is not trueIt is a chelating agent with the capability to remove the mineralized portion of the smear layerNormally used in a concentration of 17%It can be used in place of NaOCIIt can decalcify up to a 50 ?m thin layer of the root canal wallQuestion 18 of 20 19. Barbed broach is used for:Extirpating the pulpRemoval of broken instrumentsEnlarging the canalEnlarging the dentin at the coronal end of canalQuestion 19 of 20 20. Which type of obturation technique requires heat?MTA obturationChemically plasticizedLateral condensationVertical condensationQuestion 20 of 20 Loading...
