Oral Melanotic Macule: Symptoms and Treatment Skinsight Oral Melanotic Macule MEDizzy Oral melanotic macule and primary oral malignant melanoma: Epidemiology, location involved, and clinical implications Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics Oral melanotic macule Stock Image C067 2477 Science Photo Library 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 COM March 2009 Diagnosis UW School of Dentistry