Possible failed root canal? I had 2 Root canals in 30 and 31(had curved roots)a month a go.I have a big space in between the two of them where food gets caught constantly. I ate a steak for the first time in a while last night and cleaned out the food in my teeth but my jaw stilll hurts. I have just about had it. I have already been on 2 courses of Z pack and Clindamycin within 2 months of each other.I don't think my body can respond to anymore antibiotics.I also picked at it a lot with a proxy brush and toothpick and poked at gums because I kept missing the space unitl I used a waterpik. Could that be it?I am so scared and can't afford to lose any more time from work because of my teeth.