Research Progress in Etiology and Pathogenesis of Hairy Tongue
Hairy tongue is a hairy lesion on the dorsal surface of the tongue that can be stained by food,tobacco,or microorganisms,resulting in a variety of colors such as white,tan,and black.Hairy tongue is a kind of benign lesions that can cause halitosis,dry mouth,aesthetic problems,so that patients'quality of life is reduced.At pres-ent,the pathogenesis of hairy tongue has not been clarified.This review summarizes current studies on the etiology and pathogenesis of hairy tongue,which may be related to metabolic abnormality of filiform papillae,oral microbio-ta imbalance,immune abnormal phenomenon,and use of certain drugs.
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