A standard root canal procedure involves using dental instruments to extract the infected or dead tissue from the root canal system. The procedure typically takes longer than a standard filling. Alibaba Manufacturer Directory Suppliers, Manufacturers As a ballpark estimate, you can expect that any single root canal appointment will last somewhere between 30 and 60 minutes. How long does it take to do a root canal filling . Anyone who has suffered through an infected tooth will agree that’s a reasonable investment of time. The root canal is usually very narrow, which makes it difficult to fill. When the infection is removed, a temporary filling is inserted in the root canal system which the patient needs to come back to have it removed, and a permanent filling. To summarize, the answer to “how long does a root canal procedure take?” is two visits of 90 minutes each. It's possible to complete a simple root canal in 30 to 60 minutes. Swelling of gum around the tooth invol...