Mucosal melanocytic macules Labial Lentigo (labial melanotic macule) Cancer Therapy Advisor Oral pathology: Noting a pigmented macule that often presents a diagnostic dilemma Registered Dental Hygienists 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 A and B) Clinical appearance of a melanotic mandibular gingival lesion Download Scientific Diagram Oral pigmented lesions: a pragmatic approach to diagnosis and management Faculty Dental Journal