1. Cerrobend alloy is low fusing material for removing memory patterns high fusing metal for positioning or shielding stent high fusing metal for removing memory patterns low fusing metal for positioning or shielding stent 2. Animal test used to check biocompatibility of dental material is all except Ame’s test Implantation test buehlar test LD50 test 3. The process by which a casting is heated in a porcelain furnace to a temperature of 980″C to burn off any remaining impurities prior to adding porcelain is called: pickling investing degassing quenching 4. oxides of all of the following elements in noble metal alloys help in bonding to porcelain except indium tin nickel iron 5. test used to check setting time of impression material is rockwell test vickers test vicat test cold bend test 6. a cermet is a combination of conventional and aluminous ceramic powders feldspar and quartz the powders of polycarboxylate and composite resin cements silver amalgam powder and glass ionomer powder 7. maximum shrinkage of firing of ceramic occurs during which stage medium bisque high bisque low bisque none of the above 8. Which of the following statements is not true regarding glass ionomer cements? release fluoride good thermal insulator thermal expansion similar to tooth high solubility after initial setting 9. Least amount of mercury is required in Hybrid Spherical Lathe cut Admixed 10. Which material has least shelf life Polysulphide Addition silicone Condensation silicone Polyether 11. of the following, most kind to the pulp is silicate cements polycarboxylate zinc phosphate GIC 12. the primary oxygen scavenger in noble metal casting alloy is silver zinc copper iron 13. The phenomenom where porcelain appears different under varying light conditions is Transmittance Regractive optics Opacification Metamerism 14. the strength of gypsum bonded investment is dependednt upon gypsum content copper content silica content carbon content 15. the antiflux used for gold solders is silicon cryolite titanium graphite 16. Lower density usually means? High strength Lighter weight Low strength Low melting temperature 17. role if indium in amalgam is to reduce elease of mercury during mastication to reduce release of mercury during amalgam polishing to reduce formation of gamma 2 phase to reduce formation of gamma phase 18. Use of type II ZOE cement: Temporary restoration Intermediate restoration Temporary cementation Permanent cementation 19. Primer which etches and primes dentin is known as: Self etch adhesive Self etching primer Auto etch adhesive Two step system 20. titanium casting is done under air pressure in nitrogen atmosphere using cad-cam technique under vaccum in argon atmosphere in specifically fabricated aluminium vanadium crucibles Loading … Question 1 of 20
