I'm glad to hear what you say, Joanna, and I think you have been very lucky (did you have radiation of the tongue? what kind of problem did you have), but I also read about very different reactions to radiation. I think it's very individual, and of course if you take the risk to undergo this treatment, it's only in the end that you find out about your individual reaction.
Even the therapists told me about losing teeth and saliva...
Also, according to some studies I read, once you've had radiation you cannot have it again, you've used your last weapon.