Pigmented Macula on the Gingival Papillain a Young Male: Diagnosis and Management: A Case Report 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 Figure 1 from Oral melanotic macule a case report. Semantic Scholar Oral Mucosal Melanosis IntechOpen A Problematic Oral Pigmentation: Deep Penetrating Nevus Pigmented Lesions of the Oral Cavity Pocket Dentistry