1. Tooth with definite single root canal:Maxillary central incisorMaxillary second premolarMaxillar?y canineMandibular first premolarQuestion 1 of 20 2. In the double cone pattern of proximal caries extending through enamel and dentin, the apices of the two conesAre directed towards the external surfacePoint in opposite directionsAre directed towards each otherPoint towards the pulpQuestion 2 of 20 3. With the cone moved to the distal and facing towards the mesial, the mesiobuccal root of the first molarWill not move.Will be projected distally on the film.Will be projected mesially on the film.Appears to move lingually.Question 3 of 20 4. Necrosis affects periapical cementum less than bone because:Cementum is more resistant to ResorptionInfection involves bone preferentiallyMore number of pathways of spread of inflammation in boneCementum is vascular while bone is avascularQuestion 4 of 20 5. Areas of rarefaction are evident on x-ray examination whenThe tooth is responsive to cold.The cortical layer of bone has been eroded.A tooth fracture has been identified.The tooth is responsive to heat.Question 5 of 20 6. Apicoectomy procedure is done at what magnification under endodontic microscope14-26x8-14x4-8x26-30xQuestion 6 of 20 7. An 8 year old boy had trauma to permanent incisor 1 year back. He reports for treatment. The tooth is non responsive to electric pulp testing and there is no Periapical lesion. Management is:Cleaning and ApexificationFormocresol PulpotomyPulp cappingCleaning and conventional RCTQuestion 7 of 20 8. An Asian patient presents to your office with pain bilaterally in her lower second premolars. Both teeth are sensitive to percussion and show periapical radiolucencies on radiographic examination. The teeth do not respond to either cold or electric pulp tests. There is an irregular bulge on the occlusal surfaces of each tooth. The most likely diagnosis is:Pulp stonesDens evaginatusIrreversible pulpitisDens invaginatusQuestion 8 of 20 9. Which of the following statements regarding caries risk assessment is correct?The presence of restorations is a good indicator of past caries activity.The presence of pit-and-fissure sealants is a good indicator of current caries activity.The presence of restorations is a good indicator of current caries activity.The presence of dental plaque is a good indicator of current caries activity.Question 9 of 20 10. A casting may fail to seat on the prepared tooth due to all of the following factors except _____.Proximal contact(s) of casting are too heavy or too tight.Undercuts present in prepared tooth.The occlusal of the prepared tooth was under reduced.Temporary cement still on the prepared tooth after the temporary restoration has been removed.Question 10 of 20 11. Which of the following are NOT found in the pulp?Reticulin fibersProprioceptor nerve fibersUnmyelinated nerve fibersMyelinated nerve fibersQuestion 11 of 20 12. While doing a vital pulpotomy on a young, immature permanent tooth, the hemorrhage after pulp amputation could not be controlled with cotton pellets, even after several minutes. What is the next step in completing this treatment?Control the hemorrhage with hemostatic agentsIrrigate the canal with sodium ypochlorite then apply calcium hydroxidePerform the amputation at a more apical levelApply formocresol with cotton pellets at the amputation siteQuestion 12 of 20 13. A polyp may arise in connection withchronic open pulpitisacute pulpitischronic periapical lesionpulp necrosisQuestion 13 of 20 14. Occlusal dovetail in Class II inlay preparation:Resists occlusal displacementIncreases resistance from occlusal forcesAligns forces along long axis of toothResists proximal displacementQuestion 14 of 20 15. S. Shape of access cavity preparation in a mandibular molar with four canalsTriangularTrapezoidalOvalRectangularQuestion 15 of 20 16. ND: YAG laser wavelength10.60 um1.060 um300 um0.60 umQuestion 16 of 20 17. Which modality is used to measure the rate of blood flow in pulp:Cold testHeat testElectric pulp testLaser doppler flowmetryQuestion 17 of 20 18. The use of the rubber dam is best indicated for _____.Difficult patientsQuadrant dentistryAll of the aboveTeeth with challenging preparationsQuestion 18 of 20 19. All of the following factors may affect endodontic anesthesia exceptFatigueTissue inflammationPrevious unsuccessful anesthesiaTooth typeQuestion 19 of 20 20. The ideal amount of time from placing an indirect pulp cap until reopening the tooth to remove the remaining decay is:1 month3 - 4 monthsNever, unless the tooth becomes symptomatic there is no need for further treatment1 yearQuestion 20 of 20 Loading...
