1. Micro abrasion using modified Croll technique utilizes:5 % HF18% Citric acid37% Phosphoric Acid10% HCLQuestion 1 of 20 2. Porcelain laminate veneers get maximum retention throughComposite resin, acid etchingAcid etching, sialanization composite resinComposite resin, acid etching and restorationAcid etching, sialanization and restorationQuestion 2 of 20 3. Etchant acts on mostly which part of enamel rodsPeriphery of head regionHead regionTail regionEqually all partsQuestion 3 of 20 4. It has been established thatTransmission of tuberculosis is primarily blood-borne.Each patient should be considered potentially infectious.Exposure to HIV is more likely than exposure to hepatitis B virus.HIV is less fragile than the hepatitis B virus.Question 4 of 20 5. A no. 33 . bur isAn inverted cone burA round burA straight fissure burA tapered fissure burQuestion 5 of 20 6. All of the following statements regarding adjuncts to endodontic treatment are true EXCEPTTransplanted teeth with partial root development have a better prognosis than do those with developed rootsIntentional replantation is a viable alternative to endodontic surgeryA major disadvantage of endodontic implants is the lack of an apical sealOrthodontic extrusion is commonly indicated prior to implant placementQuestion 6 of 20 7. In a post & core restoration, maximum amount of stress is concentrated:Distributed uniformly along the root lengthOn the distal side of root canalOn shoulder of preparationAt the root apexQuestion 7 of 20 8. Apicoectomy of apical 3mm of the root removes successfully what Percentage of apical ramifications0.950.860.980.93Question 8 of 20 9. Irreversible pulpitis usually occurs above intrapulpal pressure of10 mmHg40 mmHg30 mm Hg20 mm HgQuestion 9 of 20 10. When comparing pin retention with slot retention for a complex amalgam restoration, which of the following statements is false?Slots provide stronger retention than pins.Pin retention is used primarily where there are few or no vertical wallsSlots and grooves can be used interchangeably.Slots are used where vertical walls allow opposing retention locks.Question 10 of 20 11. Cytotoxicity of endodontic sealer is due to:IodineGlutaraldehydeFormocresolEugenolQuestion 11 of 20 12. Once the root canal is obturated, what usually happens to the organism that had previously entered periradicular tissues from the canal?They reenter and reinfect the sterile canal unless root-end surgery is performed.They are eliminated by the natural defenses of the body.They persist and stimulate formulation of a granuloma.They will have been eliminated by various medicaments that were used in the root canal.Question 12 of 20 13. Which one of the following is a caries assessment test:Benedict testLugol's iodineCariogramSalivary reductase testQuestion 13 of 20 14. All of the following reasons are likely to indicate the need for restoration of a cervical notch except _____.Esthetic concern.Patient age.Tooth is symptomatic.Tooth is deeply notched axially.Question 14 of 20 15. Tooth with maximum accessory canals attached to furcation area:Maxillary premolarMaxillary 1st molarMaxillary 2nd molarMaxillary 2nd premolarQuestion 15 of 20 16. Retention form for a Class II amalgam preparation is ensured byAll of the aboveParallelism of buccal and lingual wallsThe gingival seatGrooves placed at the expense of the axiofacial and axiolingual line anglesQuestion 16 of 20 17. Cells found predominantly in apical part of necrosed pulp with incomplete root formation:LymphocytesOdontoblastsMultipotent stem cellsNeutrophilsQuestion 17 of 20 18. The main benefit of primary incisor replantation isTo maintain child's social acceptanceMaintenance of a normal anterior dentitionTo maintain child's self-esteemTo relieve parental guiltQuestion 18 of 20 19. The 02 taper on hand K-files is _____.0.02-mm increase in diameter per 1-mm increase in length0.02-mm increase in diameter per 2-mm increase in length0.2-mm increase in diameter per 2-mm increase in length0.2-mm increase in diameter per 1-mm increase in lengthQuestion 19 of 20 20. Cavity walls of a Class II inlay are:Kept parallel to each otherFlared occlusallyTapered occlusallyMeet external surface at a butt jointQuestion 20 of 20 Loading...
