I am about 2 years post radiation. I would say at 9 months out I could eat fairly well and my Taste was about 60% or so. And yes as I ate the taste level would go down. Spicy foods were an issue. Slight Dry mouth, Mucous and low Salvia production. Some ongoing irritations inside the mouth . My teeth ached very little but were not normal. Flash to today. I can eat about anything I wish including spicy foods which I love. Salvia production is almost back to normal which eliminates dry mouth for the most part. No mouth irritations or teeth issues. As William noted you will have a "New Normal" and Radiation recovery is very slow. Hang in there it will get better!