1. Silver cones are indicated in:Calcified canalWide straight canalYoung patient with incomplete apexNarrow canal wide till 20 or 25Question 1 of 20 2. Which of the following defines the difference between a chronic apical abscess and a periapical cyst/granuloma?The border of the radiolucent lesionChronic apical abscess is symptomaticOnly histological examination can differentiateChronic apical abscess is asymptomaticQuestion 2 of 20 3. During instrumentation of tooth #19, you realize that you are unable to negotiate your file to the complete working length. The procedural error that has occurred is most likelyVertical root fractureInadequate straight line accessInstrument separationLedgingQuestion 3 of 20 4. Which of the following materials has the highest linear coefficient of expansion?Direct goldTooth structureComposite resinAmalgamQuestion 4 of 20 5. Chances of root fracture are higher with use of:Friction lock postThreaded postCemented postFiber postQuestion 5 of 20 6. There is abundant evidence that the initiation of dental caries requires a high proportion of:Streptococcus mutans within dental plaqueStreptococcus mutans within salivaLactobacillus within salivaLactobacillus within dental plaqueQuestion 6 of 20 7. Skirts are used in:Ceramic inlayClass 2 amalgamDirect filling goldCast metal inlayQuestion 7 of 20 8. Preventive resin restoration is indicated inWide cavity to prevent cusp fractureCavitated fissures which require restorationNoncavitated pit and fissuresDeep caries to prevent progress of lesionQuestion 8 of 20 9. Modulus of resiliency of dentin is similar to:Metallic postResin fiber postCeramic postCustom cast postQuestion 9 of 20 10. S. Shape of access cavity preparation in a mandibular molar with four canalsRectangularOvalTriangularTrapezoidalQuestion 10 of 20 11. Alternating rotational technique uses which blank designSquare without cutting tipTriangular blank with cutting tipTriangular without cutting tipSquare with cutting tipQuestion 11 of 20 12. When instrumenting and subsequently obturating a root canal, the length should be determined by the:Apical constrictionNone of the AboveAnatomic apexApical foramenQuestion 12 of 20 13. Which of the following is not a risk when using air as a coolant cutting with high speedsPulp may be cooled below the danger pointTooth may be dehydratedTooth may become hypersensitiveConverging proximal wallsQuestion 13 of 20 14. Which of the following is true regarding fluoride release from GIC:It remains the sameVery slow during the first few daysRapid early but falls with decreasing concentration of fluorideRapid after 1 monthQuestion 14 of 20 15. A hockey player gets hit with a stick, and his central incisors are intruded. Which of the following is the least useful examination procedure?Soft tissue examHard tissue examRadiographVitality testQuestion 15 of 20 16. While performing nonsurgical endodontic therapy you detect a ledge. What should you do?Use a small, round bur and remove the ledge.Continue working gently with larger files to remove the ledge.Fill as far as you have reamed.Use a smaller instrument and get by the ledge.Question 16 of 20 17. Common signs of trauma from occlusion includeVertical bone lossNone of the aboveThermal sensitivityRoot ResorptionQuestion 17 of 20 18. Which of the following are similarities between amalgam Class II restorations and inlay Class II restorations, Exceptocclusal isthmus widthaxiopulpal line angle shapeconvergent walls on the occlusal surfacedepth into dentinQuestion 18 of 20 19. The direction of mesial and distal walls of Class V cavity preparation is determined byThe necessity for retentionDirection of enamel rodsGingivoaxial and occlusoaxial line anglesSize of the carious lesionQuestion 19 of 20 20. Which of the following is not a type of chisel?Gingival marginal trimerEnamel hatchetWelstadt chiselAngle formerQuestion 20 of 20 Loading...
