1. Peeso reamer is used for:Remove canal medicationPrepare post spaceRemove lingual shoulderEnlarging apical third of root canalQuestion 1 of 20 2. Retrograde (apical resection surgery) treatment is considered over orthograde treatment (root canal retreatment) for patients by their dentist after their root canal therapy is considered to have failed. When should retrograde treatment be performed over orthograde treatment?When an expensive, yet coronally sealed restoration would have to be refabricated to accommodate rthograde treatmentIf the goal of treatment is to eliminate microorganisms from the root canal systemWhen a patient is anxious about traditional retreatment proceduresWhen the root canal filling materials are easy to removeQuestion 2 of 20 3. During an intracoronal bleaching procedure the surface to which bleaching agent is applied is the?MesialLingualDistalFacialQuestion 3 of 20 4. The crown-down preparation advocates beginning radicular access withprecurvaturc of a smaller instrument.removal of the clinical crown.a larger instrument first.a smaller instrument first.Question 4 of 20 5. Beveling the gingival cavosurface margin of the proximal box of a Class II amalgam preparation on a permanent tooth:Is unnecessary since the tooth structure in this area is stronghould remove unsupported enamel that may fractureIs contraindicated because of the low edge strength of amalgamShould result in a long bevelQuestion 5 of 20 6. The ideal amount of time from placing an indirect pulp cap until reopening the tooth to remove the remaining decay is:1 monthNever, unless the tooth becomes symptomatic there is no need for further treatment1 year3 - 4 monthsQuestion 6 of 20 7. Irrigant of choice in a tooth with an acute pulpal abscess isNormal salineEDTAHydrogen peroxideSodium hypochloriteQuestion 7 of 20 8. 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 should have a wiggly appearance and reach within 1mm of 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 apexQuestion 8 of 20 9. The best way to carve amalgam back to occlusal cavosurface margin is to _____.Make deep pits and groovesUse a discoid-cleoid instrument guided by the adjacent unprepared enamelUse a round finishing bur after the amalgam has setUse visual magnificationQuestion 9 of 20 10. Cavity walls of a Class II inlay are:Tapered occlusallyFlared occlusallyMeet external surface at a butt jointKept parallel to each otherQuestion 10 of 20 11. Root canal therapy was completed on a nonvital tooth that suffered trauma 5 years prior. At the time of obturation, the tooth exhibited a periapical radiolucency on radiographic examination. Radiographically, healing should be visualized in:6 weeks1 week6 months1 monthQuestion 11 of 20 12. You completed a root canal procedure on tooth #9 approximately 6 months ago. Your patient is still reporting persistent symptoms of acute apical pathosis including sensitivity on mastication and a dull ache, and the periradicular radiolucency that was visible on your obturation radiograph has not appeared to decrease in size. The most likely reason for the persistence of these symptoms isPhantom tooth painTrigeminal neuralgiaRoot canal failureTraumatic occlusionQuestion 12 of 20 13. After endodontic therapy, minimum time period after which radiographic evidence of healing will be seen is3 months6 months2 months1 monthQuestion 13 of 20 14. Which of the following is not a risk when using air as a coolant cutting with high speedsConverging proximal wallsTooth may be dehydratedPulp may be cooled below the danger pointTooth may become hypersensitiveQuestion 14 of 20 15. The tooth preparation technique for a Class I amalgam on a mandibular first molar does not include which of the following?Maintaining a narrow isthmus widthEstablishment of pulpal depth of 1.5 to 2 mmInitial punch cut placed in the most carious pitOrientation of bur parallel to the long axis of the toothQuestion 15 of 20 16. A cold test reveals a lingering pain. You ask the patient to raise her hand until the pain subsides. The patient raises her hand for about 8 seconds. What does this data suggest?Pulp necrosisSymptomatic irreversible pulpitisReversible pulpitisSymptomatic apical periodontitisQuestion 16 of 20 17. One year after performing endodontic treatment on tooth #3, you take a new periapical radiograph and notice that there is still a lesion present. What is the most likely problem?You failed to locate a second distobuccal canalYou failed to locate a second mesiobuccal canalYou failed to locate a second palatal canalNothing, it takes more than 12 months for the bone to healQuestion 17 of 20 18. What carat gold foil is used for direct filling restorations?20222416Question 18 of 20 19. A Class V buccal cavity is to be prepared on a mandibular first premolar under a Rubber dam clamped on the tooth with a No.212 clamp. The hole for the first Premolar should be punchedAs is normally doneSlightly lingual to the other holes in the archSlightly facial to the other holes in the archSmaller than normalQuestion 19 of 20 20. Fluid movement in dentinal tubules is known as theosmotic pressure.hydraulic theory.mechanical deformation theory.hydrodynamic theory.Question 20 of 20 Loading...
