The main purpose of adding metallic oxides in ceramic is________________?

Related Mcqs:

1. Machineable glass ceramic is________________?

   A. Cerestore
   B. Decor MGC
   C. Infusium
   D. Leucite

2. Flux used in dental ceramic is________________?

   A. Alumina
   B. Silica
   C. Kaolin
   D. Boric oxide

3. Coefficient of thermal expansion of metal-ceramic alloys is________________?

   A. Same as porcelain
   B. More than porcelain
   C. Less than porcelain
   D. More than or equal to porcelain but not less

4. The maximum shrinkage during firing proces in ceramic occurs in__________________?

   A. High Bisque stage
   B. Low Bisque stage
   C. Medium Bisque stage
   D. Fusion stage

5. In a metal ceramic crown for a FPD the function of tin, indium which are readily oxidized minor constituents is to________________?

   A. Improve bonding
   B. Decrease porosity
   C. They react with the porcelain opaque layer, which masks the metal
   D. Improves the thermal expansion between the metal and porcelain

6. Ideal requirement of metal ceramic casting____________?

   A. Low fusing ceramic and high fusing alloys
   B. Matching of coefficients of thermal expansion of ceramics and alloy
   C. Bonding between ceramic and alloy
   D. All of the above

7. A highly polished surface on a metallic dental restoration aids considerably in the prevention of the____________?

   A. Dimensional change
   B. Thermal conductivity
   C. Warpage
   D. Tarnish and corrosion

8. The pattern for the metallic framework of a removable partial denture is fabricated from________________?

   A. Inlay wax type-II
   B. Boxing wax
   C. Modelling wax
   D. Casting wax

9. Electrolyte used for plating copper dies is________________?

   A. Ionic copper
   B. Copper cyanide
   C. Silver cyanide
   D. Acidic copper sulphate

10. Super abrasive is________________?

    A. Sand
    B. Silicon arbide
    C. Diamond
    D. Aluminum oxide