In porcelain metal elements are embedded in the matrix of________________?
A. Rubber matrix
B. Glass
C. Plastic
D. Resin matrix
Dental Ceramics & Miscellaneous
Porosity in porcelain at condensation stage depends on_________________?
Porosity in porcelain at condensation stage depends on_________________?
A. Shape and size of particle
B. Uniform distribution of particle size
C. Number of particles
D. None of the above
The opacity in ceramics is achieved by adding_______________?
The opacity in ceramics is achieved by adding_______________?
A. Boric oxide
B. Copper oxide
C. Silica
D. Titanium oxide
Porcelain denture teeth________________?
Porcelain denture teeth________________?
A. Have a higher coefficient of thermal expansion than acrylic teeth:
B. Have a lower abrasion resistance than enamel
C. Should be used where the inter dental clearance is small
D. Have a higher abrasion resistance than gold