YOU SAID:

you have hair on your teeth

INTO JAPANESE

あなたの歯に毛があります。

BACK INTO ENGLISH

Your teeth have hair.

INTO JAPANESE

あなたの歯は、髪を持っています。

BACK INTO ENGLISH

Your teeth has hair.

INTO JAPANESE

あなたの歯は髪です。

BACK INTO ENGLISH

Your teeth is the hair.

INTO JAPANESE

あなたの歯は髪の毛です。

BACK INTO ENGLISH

Your teeth is the hair.