Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Taint melanotic of the lip vaporization laser UNILASER MDICA Smoker's melanosis Wikipedia 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 Metastatic oral malignant melanoma transformed from pre existing pigmented lesions in mandibular gingiva: Report of an unusual case ScienceDirect