Q. I had a root canel treatment done 15months ago,, duing that time i have encountered a numbing pain,, headaches going through a process of elimination i went for a check up the xray reveled there was a hairline crack from the toothe to the root… also an infection has set in and now on a course of antibiotics!! am a littled displeased as i’ve paid almost £200 on the treatment, only to the toothe pulled nxt week. I feel the treatment should of lasted a lot longer??