Multifocal pigmentation of the oral mucosa The Journal of the American Dental Association Common Causes of Dark Spots on Gums Smilepoint Dental Beaumont TX Is focal melanotic lesion potentially malignant? A case report ScienceDirect Differential diagnosis of an oral mucosal pigmented lesion: a case of essential melanosis An oral melanotic macule is a harmless dark spot found on the lip, most often the lower lip, or inside the mouth, either on the gums, inside the cheek, or on the roof of the mouth. An oral melanotic