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 Common Causes of Dark Spots on Gums Smilepoint Dental Beaumont TX Oral Mucosal Melanosis IntechOpen Melanotic Macules, Naevi, and Melanoma Springer Nature Link Pigmented lesions of the oral mucosa and perioral tissues: a flow chart for the diagnosis and some recommendations for the management Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics Is focal melanotic lesion potentially malignant? A case report ScienceDirect