I've just finished my 3rd week of radiaton, and by mouth has sores all over the place, tongue and cheek.

When my doctor examined these, he apologized and said he had been remiss in helping me prevent some of this from happening.

It seems that my metal fillings (I have quite a few) seem to reflect a tiny amount radiation back to my cheek, and the sides of my tongue (not cancerous) get some too.

This is his personal tool, not a medical device. He warms up some medical wax and molds it to fit around your teeth. Kinda like a denture. It doesn't block radiation. Friday, was the first day I used it. I'll see how effective it is as I go along. Anything will help as my mouth has grown quite painful.

Just like to pass on info that someone may find usefull

Sandyst