Root canal treatment being performed on an improperly restored tooth?

[ToothPatient]

2nd molar, mesial side near the bone.

That empty space or notch where some flaw obviously wasn't addressed?

In this condition, is this tooth suitable to have a root canal treatment performed on it?

At what point would that flaw be addressed? Prior to the root canal? Or after during the core/crown preparation?

Obviously a crown wouldn't be fitted with a space or decay underneath, but perhaps during the crown preparation, that flaw would be addressed as a matter of routine anyways?

 

[Dr M]

I would try and address it with the root canal preparation visit.

 

[ToothPatient]

I would try and address it with the root canal preparation visit.

Would an endodontist typically do that?