Pigmentary Disorders Springer Nature Link 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 Pigmented Lesions of the Oral Mucosa Pocket Dentistry Oral Mucosal Melanosis IntechOpen Figure 2 from Oral pigmentation Semantic Scholar Diagnosis of oral pigmentations and malignant transformations ScienceDirect