1. 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 confirmation of clinical diagnosis.The attainment of direct, straight-line access to the apical portion of the root.The conservation of tooth structure.Question 1 of 20 2. Alternating rotational technique uses which blank designTriangular without cutting tipSquare with cutting tipSquare without cutting tipTriangular blank with cutting tipQuestion 2 of 20 3. When preparing a Class III or IV composite tooth preparation, which of the following is false regarding placement of retention form?Is usually prepared with a No. . round burIs placed at the axiogingival line angle regardless of the depth of the axial wallOften involves gingival and incisal retentionMay be needed in large prepsQuestion 3 of 20 4. Silver cones are indicated in:Narrow canal wide till 20 or 25Calcified canalWide straight canalYoung patient with incomplete apexQuestion 4 of 20 5. Which of the following is incorrect associationsMaxillary molars most often refer pain to the earManbibular molars most often refer pain to posterior region of the neckMaxillary incisors most often refer pain to the forehead regionMaxillary second premolars most often refer pain to the temporal regionQuestion 5 of 20 6. Tooth with definite single root canal:Maxillary second premolarMaxillar?y canineMaxillary central incisorMandibular first premolarQuestion 6 of 20 7. Features of focal sclerosing osteomyelitis often include:A nonvital pulp test.None of the choices is true.A radiolucent lesion which, in time, becomes radiopaque.A history of recent restoration of the tooth in question.Question 7 of 20 8. True about inflammation confined to pulp:Stagnation of pulp vasculatureIncreased vascular permeabilityIncreased vascularityVasoconstrictionQuestion 8 of 20 9. Which of the following is least associated with the short-term strength of a materialModulus of elasticityCreepResilienceBrittlenessQuestion 9 of 20 10. Retention form for a Class II amalgam preparation is ensured byGrooves placed at the expense of the axiofacial and axiolingual line anglesAll of the aboveParallelism of buccal and lingual wallsThe gingival seatQuestion 10 of 20 11. The outline form of the access cavity of which of the following teeth is trapezoid in shape?Mandibular first molar and maxillary second molarMandibular first molar and mandibular second molarMaxillary first molar and maxillary second premolarMaxillary first molar and mandibular first molarQuestion 11 of 20 12. Which of the following diagnostic criteria is least reliable in the assessment of the pulpal status of the primary dentition?Electric pulp testSpontaneous painInternal resorptionSwellingQuestion 12 of 20 13. A full cast crown which fails to seat properly and is rocking. This could be due to all of the following, exceptA void on the inner occlusal surface of the castingRemoval of a portion of the stone die when a bubble was removed from the master castInvestment incompletely removed from the dieA bubble on the master cast in the buccal cusp areaQuestion 13 of 20 14. Primary/master cone of GP point used for obturation of root canals is defined as:Cone with snug fitCone that matches initial instrumentCone with loose fitCone selected by master/staffQuestion 14 of 20 15. All of the following statements are true concerning posterior composite restorations EXCEPT one. Which one is the EXCEPTION?Posterior composites are contraindicated for cusp replacements unless a dry operating field is maintainedPosterior composite restorations may be indicated for the restoration of class ii cavities in premolar teeth where the appearance is very important, the cavity margins are in the enamel, and the occlusal contacts are on the enamelPosterior composite restorations are frequently indicated in the treatment of occlusal lesions that allow conservative preparationsPosterior composite restorations are contraindicated in a patient with heavy occlusion (bruxism)Question 15 of 20 16. The nerve fibers of the pulp areunevenly distributed throughout the pulp.only sensory.mainly myelinated fibers at the time of tooth eruption.easily damaged by inflammation.Question 16 of 20 17. Sharp pain in tooth is mediated by:A ?C fibresA ?Sharpeys fibresQuestion 17 of 20 18. A 20-year-old male patient presents to your office with tooth #9 in his hand. It had been avulsed the day before during a camping trip and was stored dry in a plastic bag. Your treatment plan should be:Clean the tooth and socket and replant the toothClean the tooth and socket, replant the tooth, and splint it for a weekGive your patient all of his options to replace the toothPerform root canal therapy and replant the toothQuestion 18 of 20 19. Although each carious lesion is individual and influenced by multiple factors, the carious process is generallyIntermittentRapidSlowContinuousQuestion 19 of 20 20. When amalgam is polished, the metal crystals at the surface get flattened. The layer is calledWhitby layerDalby layerTrilby layerBeilby layerQuestion 20 of 20 Loading...
