MCQs of Dental Materials – Dental Ceramics & Miscellaneous

Porcelain denture teeth:

Chemical tempering in porcelains is done to interrupt crack propagation by:

The opacity in ceramics is achieved by adding:

To prevent porosity in dental porcelain it should be backed

Porosity in porcelain at condensation stage depends on:

Pyroplastic flow of porcelain is due to:

In porcelain metal elements are embedded in the matrix of

Condensation shrinkage of porcelain during firing depends on:

Phenomenon in which porcelain appears different under varying light condition is:

Porcelain is best fired:

Machineable glass ceramic is:

Porosity in porcelain can be prevented by:

Which is not present in porcelain:

Which of the following is the main constituent of porcelain:

Flux used in dental ceramic is:

The best tissue tolerated material for crown and bridge:

Opaque porcelain:

Dental porcelains are crystalline materials of:

Dicor restoration is:

The main purpose of adding metallic oxides in ceramic is:

Porcelain binds to metal in PFM crown by:

Coefficient of thermal expansion of metal-ceramic alloys is:

In method of firing:

Stage recognized in the firing of dental porcelain given below. Which of state is not correct?

Quartz is Dental porcelain is:

The maximum shrinkage during firing proces in ceramic occurs in:

Which of the following bur is used in the preparation of cavity restored with porcelain fused to metal?

Super abrasive is:

The first porcelain tooth material was introduced by:

The preferred material for repair of fractured denture base is:

Chemical method of strengthening porcelain involves

Dispersion of crystalline phase to strengthen ceramics results in:

Compared with dental alloys, CERAMICS show

For porcelain fused to metal crown, the porcelain should have?

Greening occuring when porcelains are fired on silver free alloys may be attributed to:

The ideal temperature of water bath for softening fluid wax is about

Electrolyte used for plating copper dies is:

Crocus cloth is:

The melting point of titanium is ____ degree celsius

The most toxic form of mercury is:

Which of the following releases single wavelength of energy?

Ceramics fired to metals are processed by:

Clogging of an abrasive wheel with debris causing reduction of abrasive action is called:

When porcelain is basked against metal, it should possess a: