disease causes dysfunction of mouth oral lichen planus disease specific cell type 2010-02-01T11:12:04Z BTO:0004412 BrendaTissueOBO Marion Oral lesions accompanying cutaneous lichen planus or often occurring alone. The buccal mucosa, lips, gingivae, floor of the mouth, and palate are usually affected. Typically, oral lesions consist of radiating white or gray, velvety, threadlike lines, arranged in a reticular pattern, at the intersection of which there may be minute, white, elevated dots or streaks named wickhams striae.