Barbara, After radiation treatments, my husband's teeth started to break apart. He went to oral surgeon and had to have all his teeth pulled out. He was told he needed hyperbaric treatments which he did. Implants were not recommended by dentist or RO. He got full dentures and never had a problem. He went to a dentis who has worked on cancer patients. He was expensive but well worth it as they never were a problem to wear. This dentist is in Princeton, NJ. If you are interested I can email you his name and number. Eileen