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 Mucosa Pocket Dentistry Oral Melanotic Macule An Unusual Occurrence In Gingiva Journal of Health and Allied Sciences NU Macular Pigmented Oral Mucosal Lesions: An Amalgam Tattoo Case Report Dentistry Today 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