Hi. I am having root canal in about 2 hours. Im scared! The thing is though i went before xmas and he drilled it and filled it (took about 15 minutes) and then put a temp filling in it and ever since then it's been fine, maybe just abit sensitive. It's taken me this long to go. The appointment is 30 mins long and I am wondering how much more drilling and filling etc will be needed or if he will drill old filling out and put new one in. Can anyone help?