I am scheduled to have knee replacement surgery in two days. A couple of days ago, I started feeling some pain in one of my upper teeth which has a crown. The pain is not severe, and the tooth is not affected by hot or cold water. The pain can get worse when I bite down on the tooth or chew food. I want to go through with surgery, and I need to know whether the toothache can indicate a problem which could delay the surgery. I would appreciate your advice.