I went yesterday for a replacement filling in an upper molar. I've been to the dentist four times in the last year, complaining of toothache. the first occasion I was pregnant, so was not xrayed but sent away with antibiotics and told to come back after the baby was born. which I did, was given a check up and told everything was fine. ditto six months later, except i was told the pain when I bit down was due to a cracked filling. I had that re done yesterday and it still hurts to bite down. the dentist yesterday said it might hurt for a few days as it was a deep large filling. however, on reflection I can't believe I've not had an xray and fear I need root canal work. does anyone know if it's true that it might still be reasonable for it to hurt when I bite down, without it being anything more sinister? the practice is unfriendly and I feel I'm constantly fobbed off, as I'm still an NHS patient (they've struck my children off for allegedly not going often enough)