I am planning to get a root canal treatment from a dental clinic in Mississauga next week. Is there anyone who has undergone root canal treatment before? I want to know if the root canal treatment is safe or not. Does it have any side effects? My tooth is sensitive to hot and cold drinks. I have pain while chewing food. My tooth pain is so horrible that it wakes me up at night and I have to take painkillers to relieve my suffering. My gums bleed and release pus when pressed. I would like to hear from people who have undergone root canal treatment, whether it really works and how the procedure is. Please share your experience so that I could know more about the procedure and results. Any other suggestions and advice are also welcome.