1. Least soluble cement in water:SilicateZinc oxide eugenolGICZinc phosphateQuestion 1 of 20 2. the penetration of the fissure sealant into the fissuresis the result of a chemical bond between the sealant and enamelis not influenced by the wettability of the enamelis independent of the chemical composition of the enamelmust occur before the polymerisation of the materialQuestion 2 of 20 3. With which of the following impression materials is it advisable to wait 20 to 30 minutes before pouring of models for stress relaxation to occur?Polysulfidespolyvinyl siloxanescondensation siliconespolyethersQuestion 3 of 20 4. In orthodontic stainless steel wire which of the following is used to reduce hardness?SiliconeCarbonCobaltChromiumQuestion 4 of 20 5. bonding of GIC to tooth structure is brought about byfine pumicehydroxyl groupmetal ionscarboxyl groupQuestion 5 of 20 6. Maximum flow of Type I inlay wax at 45 degrees:10percent2 percent70percent3percentQuestion 6 of 20 7. Enamel resin bond used forCan be used for enamel as well as DentineImprove mechanical bond of resinIt has no role in preventing micro leakageConsist of a highly filled liquid acrylic monomer mixture placed onto acid etched enamelQuestion 7 of 20 8. A system of manufacturing copings from blocks of pure titanium by machine duplication and spark erosion isInceramEmpressCaptekProceraQuestion 8 of 20 9. Bonding of porcelain veneer done by:Resin cementPolycarboxylateGICRM-GICQuestion 9 of 20 10. 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:picklinginvestingdegassingquenchingQuestion 10 of 20 11. the union of metal to porcelain fused restoration is bytin and indium oxidescobalt and porcelainmechanically rough surfacenickel and orcelainQuestion 11 of 20 12. One disadvantage of dental porcelain restorations is:expansionpoor estheticsbrittlenessradioactivityQuestion 12 of 20 13. best cement for cementation of orthodontic molar bandszinc phosphatesilicophosphateGICsilicateQuestion 13 of 20 14. gold alloys used for the fabrication of saddle bars and clasps aretype IItype Itype IIItype IVQuestion 14 of 20 15. Pyroplastic flow in dental porcelainIs decreased with a low soda/potash ratioIs not an important considerationShould optimally be highIs determined by potash formQuestion 15 of 20 16. diamond particle size of 125-150 um is catagorised ascoarseextrafinefinemediumQuestion 16 of 20 17. the property of amalgam that makes it undesirable to bevel occlusal margins of an amalgam cavity preparation is itsmalleabilityflowductilitybrittlenessQuestion 17 of 20 18. dental plaster powder and dental stone powder differ mainly insolubilitychemical formulashelf lifeparticle porosityQuestion 18 of 20 19. Loss of colour stability in self polymerizing resins is due to degradation of:Polymethyl methacrylateHydroquinoneBenzoyl peroxide initiatorTertiary amineQuestion 19 of 20 20. Which of the following is used for making blades and sharp surgical instruments:Austenitic steelFerrite steelmartensitic steelnone of the aboveQuestion 20 of 20 Loading...