A physiological melanin-pigmentation of the gingiva is induced by melanocytes which are as well as in the skin also present in the oral mucosa. Whereas the melanocytes of the oral mucosa in the majority of the white population clinically are unremarkable, they are commonly occurring in darker pigmented peoples, especially in African and Afro-American.
The melanin-pigmentation is typically diffuse and bilateral, can run ribbon-shaped as well as spotted and is most often located on the attached gingiva, but is also possible in other areas, especially on the buccal mucosa. This pigmentation represents a physiological condition which needs no therapeutic intervention.
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