COM Dec. 2011 Diagnosis UW School of Dentistry Labial melanotic macule Pigmented Lesions Pocket Dentistry Oral Mucosal Melanosis IntechOpen Primary Malignant Melanoma of the Mandible: A Diagnostic Dilemma and Surgical Management of a Rare Entity Cureus 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