I've had a similar issue and a course of amoxicillan worked for me and I saved myself from tons of dental work....I have a broken molar, filling fell out and I can't bear the thought of losing all this dental work...so I use Myrrh tincture on that molar area, two times per day or so, rinse with H202 daily and some times add drops of diluted DMSO drops on that molar.....so far so good and keeping away from dentists as best I can.

I keep amoxicillian in the refrig for just in case. When I had a hip replacement we had to use amoxicillan for dental appts so now I have a nice supply, they have long shelf lives as I've asked a pharmacist....plus it's an inexpensive abx.