[Nosologic descriptions of lesions of the oral mucosa].

This article describes extensively and systematically oral mucosa diseases. Macroscopical aspects are particularly described in order to give the dentist all important elements of differential diagnosis. This nosological description is based on a clinical approach: white and pigmented lesions are distinguished from ulcerated and benign so as malignant tumoral lesions. Specifically on the oral mucosa located lesions and oral mucosa lesions of systemic diseases are described.