How long should a root canal take?

Depends: Is it a front or back tooth? Usually a front tooth is faster than a back tooth. Is it done by a specialist? Is it a straight root canal or retreatment? Is there any crown? What's your plan with the old crown? But to give you an estimate, you should give yourself at least an hour for a molar root canal.

Depends: Depends on if it front tooth ..Back molar..Infeced or nonvital tooth..Calcified canals or not..Many factors..Can vary from 45 min to 2 hours to single visit to multiple visit..

Depends: Root canal treatment is the process used to eradicate an infection. The virulence of the bacteria as well as the complexity of the anatomy influence the speed of the process. Allow the doctor to use as much or as little time he or she feel the process should take. You will benefit in the end.