dental02.jpg (11342 bytes)Fundamentals of
Dental Materials

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Dental Resins, Miscellaneous Dental Materials, and Dental Gold/Alloys

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2-11. CAVITY LINING VARNISH

Cavity lining varnish is used as a seal under an otherwise unbased restoration. It is composed of resins dissolved in a volatile thinner. Cavity lining varnish is used extensively to seal dentin tubules (small tubes in the dentin that contain dentinal fibers) and thus isolate the pulp of the tooth from the acidity of zinc phosphate cement. In some cases, it is used to help prevent marginal leakage around restorations. Cavity lining varnish is issued as a liquid in a container, usually together with a bottle of thinner. The bottle of varnish should be kept tightly sealed when not in use. If the varnish gets too thick, thinner is added to restore the original consistency. Copalite is the trade name for a common cavity varnish.

David L. Heiserman, Editor

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Revised: May 22, 2017