cosmetic dentistry_beauty & science No. 1, 2017

| case report laser dentistry Non-ablative melanin depigmentation of gingiva Author: Dr Kenneth Luk, Hong Kong Introduction Melanin depigmentation of gingiva using various laser wavelengths have been reported for over ten years.1–5 Layer by layer, the mucosa is ablated to the basal layer of the epithelium where the mela- nocytes are located. The use of lasers have been compared with the use of scalpel and diamond bur Fig. 1: Depigmentation by ablation. Fig. 2: Depigmentation by absorption of melanin and haemoglobin. Fig. 1 Fig. 2 36 cosmetic dentistry 1 2017

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