I got root-canal treatment,and he put a temporary filling in,how long will this !

I got root-canal treatment,and he put a temporary filling in,how long will this filling last?

Usually they would have made you an appointment to come back in and do a final closure of the root canal. A temporary filling on a root canal will last quite a while, but if you didn't make an appointment for the final close, you need to talk to the dentist office and see about it. You cannot go for years with the temporary! When it starts to break down, you may have to start over with the filling in the root canal.