Abstract
Continued covering of the surface of the palate results in a progressive regression of the palatal glands. Astringents initiate activity of the glands. Frequent removal of any restoration and rinsing will keep the mucous membrane in a better physiologic state. Rinsing the mouth with an astringent reflexly stimulates palatal glandular activity. This activity and dilation of the ducts cause turgidity within the adjacent tissues. This intrinsic pressure induces a smooth surface of the mucous membrane for the making of an impression.
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