Pigmented Lesions of the Oral Mucosa Pocket Dentistry Dental Update Malignant oral melanoma: how to spot it and how it is managed Dental Update This is a picosecond laser treatment of labial melanotic macules on the gingiva. Note the green flashes of the 532 nm laser as well as the immediate tissue whitening of the treated area. This An oral melanotic macule is a harmless dark spot found on the lip, most often the lower lip, or inside the mouth, either on the gums, inside the cheek, or on the roof of the mouth. An oral melanotic Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics