I got a filling replaced three months ago on one of my premolars which made the tooth hurt terribly. I ended up having a root canal. After two weeks, I had the permanent crown on, which made the tooth very sore again. I cannot tap it. It hurt more when I eat or drink. The dentist did some X-rays but the results were fine. I've been searching over the net about this which made me think that the tooth might have a crack which is not seen on the X-rays. Any idea? How long for a canal to fully heal?
Thank you very much for your answers!