608Dental MaterialsMedium
Silica sol________?
AIncrease the strength and the setting expansion of the phosphate-bonded investment
BActs as a refractory in the Silica bonded investments
CIs applied to the walls of the investment to produce hygroscopic expansion
DActs as a retarder in the silica bonded investments
Correct answer
A. Increase the strength and the setting expansion of the phosphate-bonded investment
Explanation
The correct answer is Increase the strength and the setting expansion of the phosphate-bonded investment.