I had the same diagnosis and treatment you did. Finished mine Feb 27th 2009. I use a OroStretch from CranioRehab.com for mouth exercises. My dentist measured the opening of my mouth prior to treatment and had me exercising all during treatment. I did not know I would need to continue using it after tx. About a year later I noticed that I was having difficulty opening my mouth. The scarring of the muscles continued for me long after tx. I cannot open the same as before treatment but its much better. I still use the OroStretch daily.