1. Clinical appearance of GIC is dictated byViscosity of liquidAcid content of liquidChemical composition of cementParticle size of powderQuestion 1 of 20 2. which cement has the highest modulus of elasticityzinc phosphateglass ionomer cementzinc polycaroxylatezinc polyreinforced ZOEQuestion 2 of 20 3. Stain removing commercial denture cleanser usually containSodium perborateSoda ashPotassium perborateSodium hypochloriteQuestion 3 of 20 4. Disinfection of alginate impressions when immersion method is used should not exceed10m5m30m20mQuestion 4 of 20 5. role if indium in amalgam isto reduce elease of mercury during masticationto reduce formation of gamma 2 phaseto reduce release of mercury during amalgam polishingto reduce formation of gamma phaseQuestion 5 of 20 6. Palladium and platinum are added to base metal alloys to:Reduce brittlenessAs grain refinersAct as scavengerImpart colorQuestion 6 of 20 7. Asbestos is used as a lining in a casting ring toallow for expansion of the investment.insulate against thermal conductivityfacilitate removal of the investment after casting.prevent fracture of the investment during heating.Question 7 of 20 8. The aramid and ribbond fibers are used to strengthenCeramicGlass ionomerPolyether materialAcrylic resinQuestion 8 of 20 9. the primary oxygen scavenger in noble metal casting alloy iszinccoppersilverironQuestion 9 of 20 10. Maximum flow of Type I inlay wax at 45 degrees:10percent3percent70percent2 percentQuestion 10 of 20 11. A very active metal which is gas at room temperature isMercuryGalliumHydrogenOxygenQuestion 11 of 20 12. When using which impression material can you delay pouring up of the model for up to one week?Polyetherreversible hydrocolloidpoly vinyl siloxanepolysulfideQuestion 12 of 20 13. when selecting the color of cememt to use for cementing a porcelain jacket crown the powder being tested is best mixed withalcoholonly waterglycerine water solutioncement liquidQuestion 13 of 20 14. Which investment shows high contraction due to loss of water and alcohol:Gypsum bondedPhosphate bonded investmentSilicate bondedMg bondedQuestion 14 of 20 15. methyl methacrylate can be activated by all of the following excepttertiary aminessulfuric acid derivativeslead peroxideheatQuestion 15 of 20 16. test used to check setting time of impression material isrockwell testcold bend testvicat testvickers testQuestion 16 of 20 17. Which of the following is a solid solution?silver palladiumcobalt chromiumgallium silver alloyamalgamQuestion 17 of 20 18. Best material for casting base metal crown isHigh refractory silica bondedGypsum bondedPhosphate bondedSilica bondedQuestion 18 of 20 19. Which of the following is true statements regarding the polishing of amalgam?it should be done with a dry polishing powderocclusion should not be checked prior to polishingit should be done about 10 minutes after placementit prevents tarnishing of the restorationQuestion 19 of 20 20. an advantage of rubber base impression material over reversible hydrocolloid material is that rubber base impression materialis more accurate if saliva mucus or blood is presentrequires less armamentariumwill displace soft tissueis significantly more accurateQuestion 20 of 20 Loading...
