The inability to open fully is a result of scar tissue (a tissue which is non elastic) which formed in the muscle and other muscle changes as a result of damage followed by healing. The important thing that too many radiation facilities do not tell you is that DURING treatments, stretching the muscles to their fullest extent regularly each day is necessary to maintain the full length of the muscle at the end of the day when all this is over. I have never heard of 02 treatments being used for this, and given the biomechanical reasons for the trismus, that it would actually work.

Brian, stage 4 oral cancer survivor. OCF Founder and Director. The first responsibility of a leader is to define reality. The last is to say thank you. In between, the leader is a servant.