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 Smoker's melanosis Wikipedia Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Differential Diagnosis of Pigmented Lesions in the Oral Mucosa: A Clinical Based Overview and Narrative Review Pathology Outlines Melanotic macule Pigmented Lesions of the Oral Cavity Pocket Dentistry