When there was a little stone in a muesli, a tooth broke. This was treated super in a practice and made no more problems at all, was quiet for several years. The doctor insisted that a crown be made over it. I trusted her, since she's a doctor, I didn't trust an expert. I regret very much that I got involved with it, because I had no problems. These began with the crown. I was in pain. The crown did not last long, fell off, an inflammation formed, with pus and the jaw bone formed back. I had to pull the tooth. I didn't have any problems before.