Why do I need so many visits to complete my root canal treatment?
Each tooth is different. Some have only one canal that contains a nerve (such as the front teeth) while others have three or four canals (such as back molars). It takes time for the dentist to find these canals and thoroughly clean and shape them before filling them. Some teeth may also have quite serious infections that need to be cleared up before the tooth can be filled. This also adds time to the procedure. A tooth with an infected nerve often needs antibacterial paste left inside it for several days to get rid of the infection before the root canal treatment can be finished. A front tooth with no infection might be able to be treated in one visit, but a back tooth with a serious infection may take many visits to complete.