Maternity card question

Hi,

I got a few more months before my card expires.
Been having pain on my tooth for a few years, had a filling done twice....told the dentist about the pain and was just told my gums is sensitive because of filling....
Now the pain is back and I'm wondering if root canal is free, is it a one time procedure or I would need to go to the dentist many times.   

Thanks

The root canal would be free.

It will probably be two appointments (possibly three if you include an assessment), one to do the treatment and another to put the crown on over it.