Back in the 4th grade... I was really fast - no one could beat me in a foot race....
One winter day - I slipped on the snow and chipped my tooth. They performed a root canal. Very soon thereafter (I mean weeks) - I lost a race.. this was unprecedented. My athletic ability tanked for several years.....I had trouble with these 4 teeth ever since - eventually had then ground off and steel posts installed with crowns.... and found myself with really bad fatigue @ age 40.... none of the Dr's could figure it out.
3 years in - im still at it (2 years now with those teeth outta my head) - recovery had been slow - but steady.
Curse the dentists !! grumble... grumble.... and those who accept it...