It sounds like the CAT scan indicates there may be some inflammation in the sinus area. With some antibiotics, it should be able to clear up your sinus. If not, then you could rule out a sinus infection and look at the teeth again.
Well, methylprednisone is a steroid which can calm some inflammation down in the area. If your ENT says its not a sinus infection, I would look into it being a dental problem possibly.
Thank you , the ENT doctor now thinks it is my teeth so i will go to an oral surgen today. i am on methylpred for my sinus but it took away the tooth pain is that normal. Thank you