I v ust gotten a root canal and he put a filling in. Do I need to have a crown

It depends. If there's enough tooth left, a crown isn't needed. I have both crowned and uncrowned teeth that have had root canals. If a crown isn't needed, the dentist just fills the tooth and "shapes" it.

What has your dentist said?

I didn't ask him, wanted to get some infoe first. vito