Kyrie,
I am new to this Board. I was diagnosed in August and had surgery on 9/27 for SCC on my upper right gums. I had about 1/3 of my upper jaw removed (4 teeth) and about 50% of the roof of my mouth. I had 33 rounds of radiaton that ended on 12/5/12. I wear an obturator. I had an initial one put in at surgery, now my post surgery one, and will have a final one within a year of surgery. I am not having as much problems as you are having with the obturator, but I do have some leakage with a nasal mucas junk. My biggest problem is just feeling it in my mouth and having it there all the time. My speach is about 95% normal. I can eat most foods and have about 60% of my taste back. I do not have issues with food/water coming thru the nose, so it seems that could be helped for you. I hope things get easier for you. I know this path is a hard one, and a lot harder than I even expected. Best wishes. I hope things get a little easier for you.

Eric