1. Cavity Varnish is used with: Glass Ionomer Composite Amalgam Compomer 2. The aramid and ribbond fibers are used to strengthen Ceramic Acrylic resin Polyether material Glass ionomer 3. Which of the following cements provide maximum resistance to decalcification while placing bands on molar Silicate Polycarboxylate GIC Zinc phosphate 4. Pinhole porosities are related to Sprue casting dissociation Entrapement of gas during solidification Distortion of wax pattern Casting investment junction 5. In relation to gypsum products, prolonged spatulation time will lead to Reduced setting time Increase in hygroscopic expansion Increase compressive strength Increase in hardness 6. Structural durability is a? Biological phenomenon Structural phenomenon None of the above Mechanical phenomenon 7. According to the ADA classification for alloy systems used for metalceramic restorations, noble alloys: have a noble metal content of > 25% have a noble metal content of > 15% have a noble metal content of > 60% have a noble metal content of > 45% 8. Brush heap structure is seen in: Impression compound Polyethers Alginate Addition silicones 9. Shade matching is done in what light condition: Fluorescent light at 6500K Colour corrected fluorescent light at 5500K Day light at 6000K Incandescent light bulb at 2500K 10. Must commonly used coupling agent of composites:- Organosilanes Zirconate Silicates Titanates 11. type IV gold casting alloys are used for fabricating removable partial denture frameworks inlays 3/4 crowns short span bridges 12. Which impression material is most difficult to remove without fracturing teeth of a stone model? Addition Silicone Polyether Condensation silicone Polysulphide 13. the antiflux used for gold solders is graphite silicon cryolite titanium 14. Porcelain is strongest when in a state of neutrality compression torsion tension 15. Effects associated with cold working i.e lowered ductility and distorted grains can be eliminated by process known as Annealing Strain hardening Concentricity Eutectic 16. Asbestos is used as a lining in a casting ring to facilitate removal of the investment after casting. allow for expansion of the investment. prevent fracture of the investment during heating. insulate against thermal conductivity 17. which of the following will form a peritectic alloy silver and copper silver and gold silver and tin silver and palladium 18. In metal-ceramic restorations, failure or fracture usually occurs: None of the above at the porcelain-metal interface in the metal in the porcelain 19. which of the following is not a nobel metal osmium gold silver ruthenium 20. Contact angle between liquid and adherend surface is 180 degree. This suggests Good wetting Poor wetting Completely non wetting none of the above Loading … Question 1 of 20
