After being in a car accident, I had been placed in an induced coma for almost 3 months, during this time, I had no oral care. After coming out of the coma, they started to do oral care on me. The nurse ask when was the last time I had been given oral care, I told here not at all placed on my memory. I had what she called Oral candidiasis, or in other words , and I had a severe case of it, she also said it could have been caused by me having been on antibiotic's during the time. I was placed on a IV antibiotic's for thrush. My question is> why did I get it, and how can I prevent from getting it again? That has been almost 6 years ago, but although I do brush my teeth and my tongue daily. I still within a couple of days time develop a build up on my tongue and have a severe mouth odor, I use hydrogen peroxide to help remove the build up and brush extremely well, about every three days or it continues to get worse. I do not used mouth wash as I was told not to use it, that it could trigger another episode of thrush. I see a doctor on a regular basis, for injury's I received in the car accident, is this something should I talk to him about it? I am a smoker.