Which of the following is the main constituent of porcelain__________________?
Correct answer: A. Feldspar
- A. Feldspar
- B. Kaolin
- C. Quartz
- D. Clay
Explanation
Feldspar is the principal component of conventional dental porcelain and forms the glassy matrix after firing. Quartz mainly acts as a refractory phase, while kaolin or clay is present in much smaller amounts.
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