I have a quick question. I had a root canal done on one of my upper molars ( on my right side ) about a week ago. The procedure was painless and quite quick. My dentist put a temporary filling in until I have the crown put in. The tooth hasn't been painful at all except for a little dull ache after the numbing stuff wore off and some Ibuprofen took care of that. However, I am a little nervous to eat anything on that side because I am worried the filling will fall out. I have never had a filling before ( I am 26 ) so it is taking some getting used to. I also am a bit nervous to brush where the filling is even though I know I need to. Any advice? What exactly is a filling made out of and how does it stay in? How strong is it? Thanks so much!