Multifocal Pigmentation of the Oral Cavity The Journal of the American Dental Association Oral pigmented lesions: a pragmatic approach to diagnosis and management Faculty Dental Journal 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 (Purple or Brown) Lesions in the Mouth Pigmented (Purple or Brown) Lesions in the Mouth Kazemi Oral Surgery Facialart.com Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Dark pigmentation in the oral cavity Clinical Advisor