Congratulations, Don! That was a tough treatment you did. I'm sure you mentioned somewhere along the line about your oral care in regards to the teeth by using various methods like brushing, flossing, fluoride tray, prescription fluoride, avoiding sugars, acids. From the radiation, lack of saliva, the teeth are prone to demineralization or caries. I heard of dental treatment to remineralize them, but never did it myself. I need most, if not all, of my teeth taken out now from rads in 2011, and have to do HBO, again. Good luck.