New crown painful. It usually starts off with slight pain after a hot drink then it hurts with cold food or drink.

I had 3 crowns replaced in april/may this year on 2,3 &4. It usually starts off with slight pain after a hot drink then it hurts with cold food or drink. The pain comes and goes, it usually lasts 2-3 weeks then it feels ok for a few weeks then starts up again. The other problem is i'm getting food stuck between 3&4 which is making my gums sore. I was fine before these new crowns , no food stuck , no sore gums.