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  • 1. Page 207 1.In minimizing the firing shrinkage of porcelain, the principal factor is the  A. fusion temperature.  B. ratio of flux to feldspar.  C. uniformity of particle size.  D. thoroughness of condensation.
  • 2. 2.The higher modulus of elasticity of a chromium-cobalt-nickel alloy, compared to a Type IV gold alloy, means that chromium- cobalt-nickel partial denture clasp will require  A. a heavier cross section for a clasp arm.  B. a shorter retentive arm.  C. more taper.  D. a shallower undercut. Applied dental materials p 75
  • 3. 4. The addition of platinum to a dental gold alloy results in increased  1. strength.  2. hardness.  3. melting point.  4. resistance to corrosion. A. (1) (2) (3) B.(1) and (3) C.(2) and (4) D.(4) only E. All of the above. Applied Dental Material page 153
  • 4. 5.The main purpose of flux in soldering is to  A. dissolve surface oxides and prevent further oxidation.  B. prevent recrystallization and grain growth.  C. prevent oxidation and lower the melting range of the solder.  D. dissolve surface oxides and lower the melting range. Applied Dental Material page 79
  • 5. 6. During the setting phase, a dental stone mixture will exhibit  A expansion.  B contraction.  C. loss in compressive strength.  D. gain in moisture content. Applied Dental Material page 46
  • 6. 7. Zinc-oxide-eugenol cements are  A. less soluble than zinc phosphate cements.  B. more soluble than zinc phosphate cements.  C. as soluble as zinc phosphate cements.  D. less soluble than glass ionomer cements.
  • 7. Page 208 1.To ensure the greatest accuracy, rubber base impressions should be poured  A. within 10 minutes.  B. within 1 hour.  C. within 8 hours.  D. after 24 hours.
  • 8. 2. An epinephrine-containing retraction cord has the potential of  A. interfering with the setting of the impression material.  B. causing tissue necrosis.  C. producing a systemic reaction.  D. discoloring gingival tissue Applied materials P144
  • 9. Page 209 1. The purpose of a temporary restoration in an anterior tooth is to  A. maintain aesthetics.  B. protect dentin and pulp.  C. prevent gingival inflammation and recession.  D. prevent tooth movement.  E. All of the above.
  • 10. 2. The polymerization of methyl methacrylate is  A. endothermic.  B hydrophilic.  C hydrolytic.  D. exothermic. Applied dental materials P 196
  • 11. 4.Alginate hydrocolloids  A. shrink when stored in air.  B. show syneresis.  C. expand when stored in water.  D. All of the above. Applied Dental Material page 161