If I went to the dentist to get my cavity filled how much can I expect to pay? I drew a pic of how the tooth looks so you can figure how much needs to be filled. I don't have any insurance and am worried I can't afford it which is why I didn't try to go earlier. However, now the pain is bad everyday and i can't stand it. I checked out the tooth using one of those little dental mirrors so i know how bad the damage is at least on the surface.