Q. Dr. Tennet I have crown on one my upper molars-the problem is! It was put on 1998, with very little tooth to mount it to. Over the last few years, there has been serious gum receding-you can see the gray dentin—a new crown in not an option due to little tooth left. Can my dentist put sne comp. resin or bonding over the area expose to protect it and to make it look better cosmetically. Thank you for you time.(age 41)