1. Which one of the following is a caries assessment test:Benedict testSalivary reductase testLugol's iodineCariogramQuestion 1 of 20 2. Retentive locks in the proximal box for a Class II amalgam preparation should be:Sharp, elongated, placed within the dentinSquare shaped, elongated, placed at DEJRound, elongated, placed in the dentinSquare shaped, placed in dentinQuestion 2 of 20 3. Irreversible pulpitis usually occurs above intrapulpal pressure of10 mmHg30 mm Hg20 mm Hg40 mmHgQuestion 3 of 20 4. Which of the following statements regarding ethylene diamine tetra-acetic acid (EDTA) is not trueIt can decalcify up to a 50 ?m thin layer of the root canal wallIt is a chelating agent with the capability to remove the mineralized portion of the smear layerIt can be used in place of NaOCINormally used in a concentration of 17%Question 4 of 20 5. Which protective mechanism in the oral cavity counteracts galvanism?Increasing the size of the metal restorationLontophoresisAn increase in the acidity of salivaPolarization and cataphoresisQuestion 5 of 20 6. True about inflammation confined to pulp:Increased vascularityIncreased vascular permeabilityStagnation of pulp vasculatureVasoconstrictionQuestion 6 of 20 7. The periapical lesion that would most likely contain bacteria within the lesion iscondensing osteitis.apical abscess.apical cyst.periapical granuloma.Question 7 of 20 8. A dentin bonding agent has two ends: hydrophilic and hydrophobic. The hydrophobic end binds to:EnamelCollagen in dentinComposite resinSmear layerQuestion 8 of 20 9. Although each carious lesion is individual and influenced by multiple factors, the carious process is generallyContinuousRapidSlowIntermittentQuestion 9 of 20 10. You are instrumenting a canal with a size 30, 25 mm k-type file. What does each of the sizes denote, respectively?The taper of the file and the length of the fileThe length of the file and the diameter of the tip of the fileThe diameter of the tip of the file and the length of the fileThe diameter of the tip of the file and the taper of the fileQuestion 10 of 20 11. Porcelain laminate veneers get maximum retention throughComposite resin, acid etchingAcid etching, sialanization composite resinAcid etching, sialanization and restorationComposite resin, acid etching and restorationQuestion 11 of 20 12. Primary/master cone of GP point used for obturation of root canals is defined as:Cone with snug fitCone selected by master/staffCone that matches initial instrumentCone with loose fitQuestion 12 of 20 13. pH at which enamel demineralization starts:4.56.57.55.5Question 13 of 20 14. The success of an amalgam restoration is dependent on all of the following features of tooth/cavity preparation except _____.Butt-joint cavosurface margin that results in a 90-degree margin for the amalgamDivergent (externally) preparation wallsAdequate retention form features to mechanically lock the amalgam in the preparationAdequate tooth removal for appropriate strength of the amalgamQuestion 14 of 20 15. Long-term administration of clindamycin is contraindicated because of the risk of developingurticaria.severe gastrointestinal conditions.photosensitivity.hypersensitivity.Question 15 of 20 16. Which of the following statements best describes treatment options for a separated instrument at the initial stage of cleaning and Immediate attempt to remove the instrument.Both A and C are options.Attempt to bypass the obstructed instrument.Stop canal instrumentation, do not attempt removal, and obturate.Question 16 of 20 17. In the ADA Classification of inspection and examination, type 4 is:Screening using tongue depressor, mirror & available illuminationInspection using mouth mirror & probe / explorerExamination using mirror, probe, illumination and bitewing radiographsExamination using mirror, illumination, study model, radiographsQuestion 17 of 20 18. Irrigation of the root canal achievesdissolution of tissues.all of the above.elimination of microbes.debridement.Question 18 of 20 19. Speed of medium category rotary instruments:3000-6000 rpm20,000-45,000 rpm45,000-100,000 rpm200-3000 rpmQuestion 19 of 20 20. When instrumenting and subsequently obturating a root canal, the length should be determined by the:Apical foramenApical constrictionNone of the AboveAnatomic apexQuestion 20 of 20 Loading...