I have moved 9/2010 and I am seeing new dentists. About 6 months ago the dentist wanted to replace the crown on the tooth in front of the wisdom tooth on the lower left. I did not do anything at this time. This tooth has had a root canal. I am not sure when the root canal and crown was done. It was probably many years ago. Now the current dentist says there is a cavity under this crown and recommends pulling the tooth. He says that it should not affect my chewing. My question is should I pull it and leave it or pull it and replace it with an implant. I have 2 implants in the upper right.