YOU SAID:
He didn’t want to go to the dentist
INTO JAPANESE
彼は歯医者に行きたく
BACK INTO ENGLISH
He will want to go to the dentist
INTO JAPANESE
彼は歯医者に行きたい
BACK INTO ENGLISH
He wants to go to the dentist
INTO JAPANESE
歯医者に行きたいです。
BACK INTO ENGLISH
Want to go to the dentist.
INTO JAPANESE
歯医者に行きたいです。
BACK INTO ENGLISH
Want to go to the dentist.
That didn't even make that much sense in English.