Dental Update Malignant oral melanoma: how to spot it and how it is managed Dental Update Does anyone know what this black mark on my lip is? Started last August so it's I've had it nearly a year, was living in Spain at the time for 6 months 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 color 43 Oral melanoma and other pigmentations: when to biopsy? Lambertini 2018 Journal of the European Academy of Dermatology and Venereology Wiley Online Library Melanocytic Lesions A Guide to Clinical Differential Diagnosis of Oral Mucosal Lesions Continuing Education Course dentalcare.com