Flux used in dental ceramic is________________?

Related Mcqs:

1. Machineable glass ceramic is________________?

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

2. 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

3. The main purpose of adding metallic oxides in ceramic is________________?

   A. Colour matching
   B. Transparency
   C. Opacity
   D. None of the above

4. High copper dental amalgams are superior to other amalgams because high copper dental amalgems______________?

   A. Have less marginal breakdown
   B. Are workable at lower Hg-alloy ratio
   C. Have a higher ratio of tensile to compressive strength
   D. Have less resistance to tarnish and corrosion

5. Powders of dental plaster and dental stone differ mainly in____________?

   A. Solubility
   B. Shelf life
   C. Chemical formula
   D. Particle porosity

6. The main difference between dental stone and dental plaster is______________?

   A. Chemical composition
   B. Self life
   C. Sharpe and size of particles
   D. Solubility in water

7. The American dental association (ADA) specification number for non-aqueous elastomeric dental impression material is______________?

   A. 19
   B. 20
   C. 21
   D. 26

8. The most commonly used Titanium alloy for dental and medical purposes is________________?

   A. Ti 6Al 4V
   B. Ti 5Al 4V
   C. Ti 5Al 5V
   D. Ti 6Al 6V

9. 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

10. 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