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 Melanocytic Lesions A Guide to Clinical Differential Diagnosis of Oral Mucosal Lesions Continuing Education Course dentalcare.com Labial Melanotic Macules DoveMed The labial melanotic macule: a review of 79 cases View of Malignant melanotic nerve sheath tumor with PRKAR1A, KMT2C and GNAQ mutations Free Neuropathology Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics