1. A cold test best localizesPulp necrosis.Referred pain.Pain of pulpal origin.Periodontal pain.Question 1 of 20 2. Which of following is the most accepted theory of transmission of dentinal hypersensitivity:Gates control theoryModulation theoryDirect neural stimulation theoryHydrodynamic theoryQuestion 2 of 20 3. In a class I cavity for amalgam, the mesial and distal walls show slight divergence towards the occlusal surface. This is done to:Allow easier condensation of amalgamIncrease bulk of amalgamPrevent undermining of marginal ridgesPrevent placing amalgam margin at area of cuspal contact of opposite toothQuestion 3 of 20 4. Chances of root fracture are higher with use of:Cemented postFriction lock postThreaded postFiber postQuestion 4 of 20 5. A No. 4 bur isA cross-cut tapered fissure burA straight fissure burA round burAn inverted cone burQuestion 5 of 20 6. Which of the following is the most predominant organism in failed Root Canal Treatment casesFusobacteriumLactobacilliE. FaecalisStreptococciQuestion 6 of 20 7. The major objectives of access preparation include all of the following except which one?The attainment of direct, straight-line access to canal orifices.The attainment of direct, straight-line access to the apical portion of the root.The conservation of tooth structure.The confirmation of clinical diagnosis.Question 7 of 20 8. Which of the following is least associated with the short-term strength of a materialBrittlenessModulus of elasticityResilienceCreepQuestion 8 of 20 9. While obturation selection of master cone is based on:The cone must fit well in the apical third of the canal and be within 1mm of the radiographic apexThe cone must fit well in the canal and be at the radiographic apexThe cone must bind loosely in the canal and reach within 1 mm of the radiographic apexThe cone should have a wiggly appearance and reach within 1mm of radiographic apexQuestion 9 of 20 10. What should be the first treatment for an acutely avulsed tooth. Pulp protectionImmediate endodontic treatment and reimplantGently replace with finger using light pressure, take radiograph and splintSterilize the root and reimplantQuestion 10 of 20 11. When a calcified root canal cannot be located or instrumentedThe dentist must proceed with the understanding that an unexplored or unfilled canal is worse than a perforation.Extraction is the treatment of choice.It is no longer accessible to bacterial infection.Retrograde and replantation procedures should be considered.Question 11 of 20 12. Possible etiology of internal resorption:Luxation injuryFurcation involvementNecrosis of pulpThe presence of low grade chronic pulpitisQuestion 12 of 20 13. Second digit in 4-digit instrument formula indicatesBlade widthBlade lengthPrimary cutting-edge angleBlade angleQuestion 13 of 20 14. A patient walks into your clinic holding a cup with a tooth in it. What liquid would you LEAST hope the patient kept the tooth in?SalivaMilkSalineWaterQuestion 14 of 20 15. Which one of the following is a caries assessment test:CariogramBenedict testSalivary reductase testLugol's iodineQuestion 15 of 20 16. A dentin bonding agent has a hydrophilic and a hydrophobic end. Of the two ends, the hydrophilic end binds to the:Collagen of dentinHydroxyapatite of hard tissuesCalcium of enamelResinous restorative materialQuestion 16 of 20 17. Which of the following is not true regarding a K file as compared to a reamer:It contains more flute than reamersIs more flexible than a reamerUsed in push & pull motionHas a square cross sectionQuestion 17 of 20 18. Retentive locks in the proximal box for a Class II amalgam preparation should be:Round, elongated, placed in the dentinSquare shaped, elongated, placed at DEJSharp, elongated, placed within the dentinSquare shaped, placed in dentinQuestion 18 of 20 19. Pain from a tooth is characterized by:Sharp pain conducted by unmyelinated A delta fibersDull pain conducted by unmyelinated A delta fibersSharp pain conducted by myelinated A delta fibersDull pain conducted by myelinated A delta fibersQuestion 19 of 20 20. A patient is diagnosed with symptomatic apical periodontitis and refuses treatment due to fear of needles. Your statement to the patient should include the fact that:Eventually, the acute nature of the lesion will progress into a chronic and nonpainful lesionThe apical lesion has been there or years and the tooth needs treatment immediatelyNone of the aboveThis lesion can progress into the bone causing osteomyelitis, a more severe conditionQuestion 20 of 20 Loading...
