I got smacked right in the mouth with a baseball coming off an aluminum bat when I was middle school age. Been dealing with issues ever since, have 7-8 crowns, 3-4 root canals. Got another one about to need a root canal was hurting me good. Dentist said let's see if antibiotics will clear it up for a little bit, maybe we can buy a little time before the root canal...2 days or so of taking those and I'm like a new man!