Bite misalign after root canal

Hi Recently I had dental work for root canal treatment and my bite didn't seem correct and it causes jaw (TMJ) pain Does anyone have a similar experience? Or maybe know some bite alignment dentist in Japan? Looking for a dentist in tokyo/saitama area Better if they can speak english, thank you for the help!

Edit:
I forgot to mention, I told my dentist I have TMJ pain after the treatment and they gave me a custom nightguard. But the TMJ still exists!
I had hard time communicating because my local dentist cannot speak english well

by james_bondo007