Five months ago I had a post and core crown fitted. After two weeks it fell out. I had the crown re-glued and four months later it has come loose again. This time the post is still firmly glued in but I believe that the glue between the old root and the new crown has deteriorated and come away and now the tooth wobbles. My dentist is reluctant to put pressure on the tooth to try remove the post and re-glue it in case he fractures the root so has not offered any treatment . Can anything be done to stop the tooth from wobbling?