Oral Mucosal Melanosis IntechOpen 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 Differential Diagnosis of Pigmented Lesions in the Oral Mucosa: A Clinical Based Overview and Narrative Review Oral melanoma and other pigmentations: when to biopsy? Lambertini 2018 Journal of the European Academy of Dermatology and Venereology Wiley Online Library Dental Update Malignant oral melanoma: how to spot it and how it is managed Dental Update COM March 2009 Diagnosis UW School of Dentistry