1. Affected dentin differs from infected dentin in that, it hasNot been invaded by microorganismsBeen calcifiedA soft leathery textureBeen invaded by microorganismsQuestion 1 of 20 2. Gutta-percha is best sterilized inAn autoclave.5.5% sodium hypochlorite for 1 minute.Paraformaldehyde for 1 minute.Dry heat.Question 2 of 20 3. An upper permanent central incisor with a history of trauma shows root fracture in the middle-apical third of root. The coronal part shows signs of pulpal necrosis while the apical part shows no periapical radiolucency. What is the treatmentConventional RCT of both the apical and coronal segmentsCoronal RCT +MTA placement with extraction of apical segmentRCT of the apical and coronal parts; fill with MTARCT of only the coronal part followed by MTA placement while apical part remains untouchedQuestion 3 of 20 4. Which Root canal irrigant has been shown to cause allergic reactions:ChlorhexSuperoxide waterPovidone iodineHydrogen peroxideQuestion 4 of 20 5. Traumatized tooth with a necrotic pulp shows a periapical area of rarefaction radiographically. The pulpal area is closed. Viable microorganisms might be cultured from the canal in approximately what percentage of the cases30 percent10 percent80 percent70 percentQuestion 5 of 20 6. Normally the endodontic post retaining a core-should extend toThe apex of the rootHalf of the root lengthTwo-third of the root lengthOne-third of the root lengthQuestion 6 of 20 7. Buccal cavity of Mandibular canine is to be restored with light cured composite. What should not be done?Pulp cappingBevelling of cavity marginsRemove soft dentineAcid etchingQuestion 7 of 20 8. An individual reports with a non-vital central incisor with apex >1 mm in diameter (open apex). The treatment of choice is:Glutaraldehyde PulpotomyFormacresol pulpotomyConventional obturation with Gutta PerchaSingle sitting Obturation using MTAQuestion 8 of 20 9. When carving a Class I amalgam restoration, which statement is false?Carving may be made easier by waiting 1 or 2 minutes after condensation before it is started.The carved amalgam outline should coincide with the cavosurface margins.Do not carve deep occlusal anatomy.The blade of the discoid carver should move parallel to the margins resting on the partially set amalgam.Question 9 of 20 10. Triple Antibiotic paste is given below CEJ what is the reason:Possibility of tooth discoloration by minocyclineFor better sealing of apical tubulesWeakening of tooth structure by ciprofloxacinPlacing the paste too far coronally may leach the paste from the coronal seal areaQuestion 10 of 20 11. Which of the following is true regarding fluoride release from GIC:It remains the sameVery slow during the first few daysRapid after 1 monthRapid early but falls with decreasing concentration of fluorideQuestion 11 of 20 12. Silver alloy used for inlay preparation in primary teeth:SterlingHigh copperEutecticPeritecticQuestion 12 of 20 13. A polyp may arise in connection withacute pulpitispulp necrosischronic periapical lesionchronic open pulpitisQuestion 13 of 20 14. 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 PeriodontitisChronic apical abscessAcute apical abscessAsymptomatic apical periodontitisQuestion 14 of 20 15. Axial wall of a Class V cavity should usually be:InvertedConcaveFlatConvexQuestion 15 of 20 16. Although each carious lesion is individual and influenced by multiple factors, the carious process is generallyIntermittentContinuousRapidSlowQuestion 16 of 20 17. Which of the following horizontal root fracture has most favourable prognosis:Corona!ApicalMiddleCervicalQuestion 17 of 20 18. There is abundant evidence that the initiation of dental caries requires a high proportion of:Lactobacillus within salivaStreptococcus mutans within dental plaqueStreptococcus mutans within salivaLactobacillus within dental plaqueQuestion 18 of 20 19. Disadvantage of Minocycline in 3 mix triple antibiotic paste used for disinfection of root canal prior to revascularization is:Development of resistanceIncreased brittleness of toothCrown discolorationMutation of certain microbesQuestion 19 of 20 20. Enameloplasty is indicated in carious tooth when caries extend to a depth of:Enameloplasty can be done irrespective of fissure depthUpto 1/2 the thickness of enamelUpto 2/3rd the thickness of enamelUpto 1/3rd the thickness of enamelQuestion 20 of 20 Loading...