A tooth-colored material (usually plastic or porcelain) used to hide the buccal or labial surface of a metal crown to give the outward appearance of a natural tooth.
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fac·ing 'fā-siŋ n a front of porcelain or plastic used in dental crowns and bridgework to face the metal replacement and simulate the natural tooth
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fac·ing (fāsґing) a porcelain reproduction of the labial or buccal surface of a tooth; it may be constructed with or without pins and is soldered or cemented to a metal backing.Medical dictionary. 2011.