Opaque porcelain________________?
Correct answer: C. Contains opacifier like zirconium and titanium oxide
- A. Is Feldspathic glass
- B. Not used to mask the colour of the cement used in placing of restoration
- C. Contains opacifier like zirconium and titanium oxide
- D. Used to produce the characteristic translucence, which is an inherent aspect of the incisal edge in natural teeth
Explanation
Opaque porcelain masks the dark metal substructure and contains opacifying oxides such as zirconium oxide and titanium oxide. Translucency is mainly provided by other porcelain layers, not the opaque layer.
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