1. Roughest cut surface on a tooth results fromMedium grit diamond at high speedCross cut fissure bur at high speedPlane fissure bur at high speedMedium grit diamond at low speedQuestion 1 of 20 2. Which of the following best illustrates the reason why calcium hydroxide is not used endodontic procedures involving the primary dentition?Produces no anti-microbial effectPromotes the formation of reparative dentinCan cause external ResorptionHas an alkaline pHQuestion 2 of 20 3. 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:Yes, if swelling is presentIt should never be kept openAfter immediate drainage, patient should be made to sit for some time; canal should be closed when it can be driedYes, only in weeping canalsQuestion 3 of 20 4. Which of the following statements best describes treatment options for a separated instrument at the initial stage of cleaning and Attempt to bypass the obstructed instrument.Both A and C are options.Stop canal instrumentation, do not attempt removal, and obturate.Immediate attempt to remove the instrument.Question 4 of 20 5. The success of an amalgam restoration is dependent on all of the following features of tooth/cavity preparation except _____.Adequate retention form features to mechanically lock the amalgam in the preparationButt-joint cavosurface margin that results in a 90-degree margin for the amalgamDivergent (externally) preparation wallsAdequate tooth removal for appropriate strength of the amalgamQuestion 5 of 20 6. Irreversible pulpitis pain in which of the following sites is most likely to radiate to the ear?Maxillary premolarMaxillary molarMandibular premolarMandibular molarQuestion 6 of 20 7. Digital Fiber Optic Trans-illumination (DIFOTI) is used toDetect occlusal cariesDetect calcium concentration in enamelDetect proximal cariesDetect bony densityQuestion 7 of 20 8. Retention form for a Class II amalgam preparation is ensured byGrooves placed at the expense of the axiofacial and axiolingual line anglesParallelism of buccal and lingual wallsAll of the aboveThe gingival seatQuestion 8 of 20 9. Preventive resin restoration is indicated inDeep caries to prevent progress of lesionNoncavitated pit and fissuresWide cavity to prevent cusp fractureCavitated fissures which require restorationQuestion 9 of 20 10. Sharp pain in tooth is mediated by:Sharpeys fibresC fibresA ?A ?Question 10 of 20 11. Abrasive particle size in fine grit diamond point:76-85 microns60-75 microns38-44 microns88-125 micronsQuestion 11 of 20 12. When preparing a pin channel, you perforate into the vital pulp chamber. What best describes your next step.Allow bleeding to stop, dry with paper point, place calcium hydroxideAllow bleeding to stop, dry with paper point, place pin elsewhere, and restore with amalgamAllow bleeding to stop, dry with paper point, place pin to depth of 1 mm as to not enter the pulp chamberExplain to the patient the need for root canal treatmentQuestion 12 of 20 13. Which of the following are true statements regarding the polishing of amalgamocclusion should not be checked prior to polishingit should be done with a dry polishing powdert prevents tarnishing of the restorationit should be done about 10 minutes after placementQuestion 13 of 20 14. Maxillary caninesAre usually less than 25 mm long.Are 25 mm or longer.Possess extremely curved canals.Have an anatomic apex distant from the apical foramen.Question 14 of 20 15. Which of the following is not suggested as irrigants during root canal therapySodium hypochloriteHydrogen peroxideCalcium hydroxideUrea peroxide (Gly-Oxide)Question 15 of 20 16. Which of the following is the most predominant organism in failed Root Canal Treatment casesFusobacteriumStreptococciLactobacilliE. FaecalisQuestion 16 of 20 17. When using electrosurgery for management of soft tissue, the deciding factor for the current setting isTissue thicknessHealth of the patientAmount of fluid control desiredProfoundness of anesthesiaQuestion 17 of 20 18. After doing proper etching, what is the ideal dept of the micropores created/microtags formed?500 -5000 ?m0.5- 5 ?m50 -500 ?m5- 50 ?mQuestion 18 of 20 19. Etchant acts on mostly which part of enamel rodsTail regionEqually all partsHead regionPeriphery of head regionQuestion 19 of 20 20. Which Root canal irrigant has been shown to cause allergic reactions:Povidone iodineChlorhexHydrogen peroxideSuperoxide waterQuestion 20 of 20 Loading...
