I had a tooth with a large filling it. A large portion of the tooth chipped off. As expected, I needed a crown. So the doctor drilled the tooth away and say there was a cavity underneath the filling, and so he said he had to go very close to the nerve. I have no sensitivity to hot/cold, but I can "feel" the tooth biting down on it. Not sure if that makes sense. It doesn't necessarily hurt, I just feel pressure on that tooth/temporary crown much more. To be honest, I think this dentist is dishonest. I think he told me I needed to have a second tooth crowned - which I did - that didn't really need to be. I almost wonder if he didn't purposefully drill away too much so it would irritate the nerve and give him an excuse to do a root canal. Regardless, is feeling pressure an indication the nerve is going die/abscess? Also, are antibiotics going to help at all if I were to take them - to hopefully prevent the nerve from dying?