Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics Pigmented Lesions of the Oral Mucosa Pocket Dentistry Pigmented Lesions of the Oral Cavity Pocket Dentistry 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 Labial melanotic macule Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier Hunziker syndrome