Like Dinah said, the radiation is bad enough but it's the xerostomia will get your teeth also. Dry mouth and tooth decay go hand in hand. I have had great dental care for years, use the trays often and have still have had 2 repairs for crumbling teeth since the end of treatment. I'm also going in for cleaning every 4 months. Biotene is a great product, I use it myself, but it's not enough. Don't get a false sense of security.

Tizz - your rad/onc flat out gave you bad advice - he should stick within his specialty.

For those of us blessed enough to keep our own teeth, there is a price to pay and that is eternal vigilance and meticulous oral hygiene. Dental trays and regular flouride treatments, along with flossing, Waterpiks, perio-aids, toothpicks, Sonicare, frequent phophylaxsis, whatever it takes. Having to have an extraction, post radiation, can be fairly serious business. There are pictures on the site of ORN (OsteoRadioNecrosis), literally radiation bone death, that should you shock into the reality of this and why dental hygiene has to be a part of the "new normal".