1. To avoid external transportation of the root canaluse vigorous instrumentation.use large instruments.precurve instruments.avoid the use of sodium hypochlorite.Question 1 of 20 2. Pre carve burnishing useful for all except:Increases setting timeRemoves excess mercuryInitiates carvingBetter condensation of amalgam at margins of restorationQuestion 2 of 20 3. After completion of root canal therapy, you recall your patient to evaluate the treatment outcome. What are the criteria for successful root canal therapy?1. Absence of pain 2. Absence of swelling 3. Sinus tract healing 4. No residual probing defects 5. Resolution or healing of periapical lesions2, 3, 41, 3, 51, 2, 4, 51, 2, 3, 4, 5Question 3 of 20 4. In a tooth with apical root fracture which of the following is trueThe tooth should be extracted as soon as possibleTooth remains vital with little increase in mobilityTooth shows increased mobility with tendernessTooth will necrose and increased mobilityQuestion 4 of 20 5. Which of the following is not true when fixing the matrix band for filling a Class 2 cavity with amalgam? The matrix band shouldBe higher than the occlusal surface of the toothFit the cervical margin of the proximal box looselySupport the marginal ridge of the restoration during amalgam packingProvide a physiological contour for the proximal surface of the restorationQuestion 5 of 20 6. Which of the following results may be expected following surgery when both the buccal and lingual cortical plates have been lost?Osteosclerosis.Ankylosis.Scar tissue formation.Normal bone regeneration.Question 6 of 20 7. According to ADA specifications, ISO #2 endodontic instrumentsVariable taper instrument across the lengthConstant taper of 0.02mm/mm across the lengthInstruments with cutting tip2 variable tapers across the length of the instrumentQuestion 7 of 20 8. Extension for prevention is directly related to theRemoval of unsupported enamel rods from the proximal surfacesOutline form of the cavityDepth of the cavityRounding of the line anglesQuestion 8 of 20 9. Which of the following permanent teeth are least susceptible to carious attack?Maxillary premolarsMaxillary caninesMandibular incisorsMandibular molarsQuestion 9 of 20 10. Which of the following is an inflammatory reaction to pulpal infection and necrosis characterized by rapid onset, spontaneous pain, tenderness of the tooth to pressure, pus formation and swelling of associated tissues?Symptomatic apical PeriodontitisAcute apical abscessChronic apical abscessAsymptomatic apical periodontitisQuestion 10 of 20 11. On physical and radiographic examination, your patient presents with DO decay and a gingival swelling at tooth #28. The conical defect on the tooth probes more than 12 mm on the buccal aspect and does not respond to electrical pulp testing. There is no mobility, and this condition is localized to the affected tooth. The periapical radiograph shows destruction of the periodontium from the level of the gingival sulcus to the apex of the tooth. Proper treatment of this condition includes:Periodontal treatment followed by endodontic treatmentEndodontic treatment onlyeriodontal treatment onlyEndodontic treatment followed by periodontal treatmentQuestion 11 of 20 12. Necrosis affects periapical cementum less than bone because:Cementum is vascular while bone is avascularMore number of pathways of spread of inflammation in boneCementum is more resistant to ResorptionInfection involves bone preferentiallyQuestion 12 of 20 13. The most effective method of diagnosing the origin of fistula is:Tracing the fistula with a gutta percha point in conjunction with the radiographVisually locating the closest tooth to the fistulaPeriodontal probing of all teeth in the areaPercussing all of the teeth in the area of the fistulaQuestion 13 of 20 14. Cells in asymptomatic apical periodontitis lesions:Macrophages & lymphocytesOsteoclastsDerivatives of disintegrated cell membraneFoamy macrophages & neutrophilsQuestion 14 of 20 15. Axial wall of a Class V cavity should usually be:ConvexInvertedConcaveFlatQuestion 15 of 20 16. Many factor affect tooth/cavity preparation. Which of the following would be the least important factor?Extent of the defectExtent of the old materialSize of the toothFracture linesQuestion 16 of 20 17. Which of the following would NOT necessarily indicate the need for root canal treatment or extraction of a carious tooth?frank apical radiolucencynegative electric pulp testlingering pain over 15 secondspercussion sensitivityQuestion 17 of 20 18. Diamonds remove tooth structure more efficiently than steel burs, but they leave undesirably rough surfaces and irregular cavosurface finish lines.Both the statements are falseThe first statement is correct, but the second is falseThe first statement is false, but the second is correctBoth the statements are correctQuestion 18 of 20 19. All of the following reasons are likely to indicate the need for restoration of a cervical notch except _____.Tooth is deeply notched axially.Tooth is symptomatic.Esthetic concern.Patient age.Question 19 of 20 20. A primary tooth has an exposed vital pulp. The tooth has less than two-third of its root remaining and caries perforating the furcation. There is a succedaneous tooth forming normally apical to the tooth. The treatment of choice for this tooth is:Pulp capIndirect pulp capPulpotomyExtractionQuestion 20 of 20 Loading...
