Diagnosis of oral pigmentations and malignant
Physiologic Pigmentation (Racial). Racial pigmentation of oral mucosa is the most common cause of oral pigmentation; however it is not directly related to the color of the skin  ,  ,  . The pigmentation is symmetrically distributed, especially on the gingival [ Fig. 1 ] and buccal mucosa, on the hard palate, lips and tongue may also be seen as brown patches with well-defined borders.
DA: 41 PA: 86 MOZ Rank: 6