The carat for Au foil used for restorations is_______________?

Related Mcqs:

1. Amalgam restorations give the best clinical service when the residual mercury content is_______________?

   A. 38-42%
   B. 48-52%
   C. 58-62%
   D. 68-72%

2. Cohesion of gold foil is an example of______________?

   A. Atomic attraction and welding
   B. Annealing
   C. Wedging
   D. Adaptation

3. One of the claims for the superiority composite resin restoration over silicate cement restorations is that the resin restorations_____________?

   A. Prevent galvanic action
   B. Are practically insoluble in oral fluids
   C. Adapt to the walls of the cavity better
   D. Have a higher coefficient of thermal expansion

4. A radiograph of the mandibular anterior teeth in a patient reveals radiolucencies above the apices of right lateral and central incisors. No restorations or cavities are present There is no pain or swelling and the pulps are vital. The diagnosis is_________________?

   A. Periapical granuloma
   B. Cementoblastoma
   C. Radicular cyst
   D. Chronic abscess

5. Gold content of an 18 carat alloy is______________?

   A. 25%
   B. 50%
   C. 75%
   D. 100%

6. The threshold limit value of mercury exposures is_______________?

   A. mg / m3
   B. 0.05 mg / m3
   C. mg / m3
   D. mg / m3

7. The impression with the least dimensional change upon disinfection is_______________?

   A. Addition poly silicone
   B. Agar-agar
   C. Polysulphide
   D. Polyether

8. The castability of chromium-cobait base metal alloys when compared to gold based noble metal alloys is_______________?

   A. More
   B. Less
   C. Equal
   D. Depends on the alloy type

9. The chemical used to etch enamel is_______________?

   A. Zinc oxide
   B. Methyl methacrylate
   C. Phosphoric acid
   D. Eugenol

10. The % of free monomer in a heat – cured acrylic resin is_______________?

    A. 3% to 5%
    B. 8% to 10%
    C. 0.2% to 0.5%
    D. 0.6% to 0.8%