a·bra·sion (ă-brā'zhŭn), 1. An excoriation, or circumscribed removal of the superficial layers of skin or mucous membrane. Synonym(s): abraded wound 2. A scraping away of a portion of the surface. 3. In dentistry, the pathologic grinding or wearing away of tooth substance by incorrect tooth-brushing methods, the presence of foreign objects, bruxism ...
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