you say that you have pain while getting your teeth filled . Pain generally does not occurs while filling a teeth. if you are experiencing one, then that means might be your tooth is decayed a lot and reached up-to the pulp(nerve
) portion of your tooth. an x -ray will clear the status of your tooth. And if so is the case then u need to go for a Root Canal
treatment(rct) which is done under local anesthesia
and you will not observe any pain. Consult your dental surgeon as soon as possible.