Hi Andrew,
I had numerous infections/abscesses in the gums, mainly lower, which required the use of antibiotics, pain meds occasionally, for the most part of several years, which were mainly due to rampant caries from radiation causing dry mouth, I'm sure diabetes didn't help, but was unable to have any teeth removed due to persistent recurrent cancer, and contradiction of HBOT. I was under the care, and close monitoring, weekly at times, by a cancer oral/maxillofacial surgeon, as well as my other doctors, who took panorama x-ray, oral CT, to see the extent of infection, rule out cancer, and other scans, blood work by others, and was prescribed chlorhexidine--Peridex, in addition to the antibiotics, practiced proper oral care, used dry mouth products, NeutraSal rinse too, and ultimately had all my teeth removed with the required 20/10 Marx protocol HBOT, being they were not restorable, and had no infections thereafter.
I did try to stay away from sharp textured, and other foods that would irritate or injure the mouth. I'm not too sure if infections have a role in developing ORN, as has happened after the extractions, I heard may not, as it is a cause of Injury, such as extractions, plus radiation, but that's for a doctor to say.
Doctors also don't like to mess around when it comes to infections/abscesses, which can go systemically, to the brain, heart, as I was warned, and has happened to me with other infections like thrush, so such should be treated appropriately.
Good luck, and hope this hops.