Dianne,
So sorry yours posts have not been answered. I do not have a clue if whitening is ok after radiation or not. The crest white strips work really good though, and that is not so much trouble. A friend of mine had hers whitened at the dentist and she said it was very uncomfortable. If you have lack of saliva like my husband after radiation, it might be hard to sit there with that stuff in your mouth that long.
Julie