Antibiotics were given back then and it just recently became infected within the year. I started to notice synonymous little problems occur along with the timing of the root canal abscess. It is merely observational evidence based on symptom timing. For example, my vision blurred a noticeable amount (nearsighted) within a relatively short amount of time around the abscess appearance.
How would you go about a root canal abscess?
Ozone through ear insufflation would still be my first choice. The ozone is a powerful antiseptic, promotes healing and it readily passes in to the various tissues.
If I had an abscess and did not have ozone I personally would go with high doses of pau d' arco and chaparral.