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 COM August 2004 Diagnosis UW School of Dentistry Pigmented lesions of the oral mucosa and perioral : Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, & Endodontics Figure 225 from Pigmentations of the Oral Mucosa and Facial Skin Semantic Scholar Pigmented Lesions of the Oral Mucosa Pocket Dentistry