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 Oral pigmented lesions: a pragmatic approach to diagnosis and management Faculty Dental Journal Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier Hunziker syndrome