Multiple choice

Black hairy tongue appearance is due to _____________.

  1. filiform papillae

  2. fungiform papillae

  3. filiform and fungiform papillae

  4. circum vallate papillae

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A Correct answer
Explanation

Other names for hairy tongue are: Lingua Nigra Lingua Villosa Lingua Villosa Nigra It occurs due to hypertrophy of filiform papillae on the dorsal surface of tongue, due to lack of mechanical stimulation and debridement.