Oral surgery II: Part 4. Common oral lesions British Dental Journal Pathology Outlines Melanotic macule Oral Mucosal Melanosis IntechOpen 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 Diagnosis of oral pigmentations and malignant transformations ScienceDirect Unveiling Oral Malignant Melanoma: Clinicopathological Details of a Case Cureus