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 Mucosal Melanosis IntechOpen Oral Melanotic Macule An Unusual Occurrence In Gingiva Journal of Health and Allied Sciences NU Pigmented Lesions of the Oral Mucosa Pocket Dentistry Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor Pigmented Lesions of the Oral Mucosa: Clinical Presentation, Histology, and Recommendations for Management