I had a couple cavities filled in at Wonderful Smiles. Both fillings resulted in bad shooting pain afterward when chewing or drinking anything at all hot. Over the next couple months I went back a few times to try and fix the pain, but all they did was file down more of the filling material without really looking at it to see if bite was even an issue. The pain never got better.
I eventually went to a new dentist and had the cavities redrilled and filled again, and the pain subsided completely within a couple weeks of the work being redone.
I asked the new dentist what he thought the problem might be, and he said he wasn't really sure but the craftsmanship didn't look particularly good and he could understand why it could have been painful.
In addition to the bad dental work (which is enough for a 1 star rating I guess), the scheduling was a mess and the dental hygienist was always fully booked 4+ weeks out.