ORAL MELANOTIC MACULE (OMM) (Also called focal melanosis labial melanotic macule) A benign, localized, flat pigmented lesion of the oral mucosa Caused by a focal increase in melanin production Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis Oral Mucosal Melanosis IntechOpen Pigmented Lesions of the Oral Mucosa Pocket Dentistry Pigmented Lesions of the Oral Mucosa Pocket Dentistry Figure 2 from Oral pigmentation Semantic Scholar