Well, I can only guess that your face is the weak link. In that your body has learned to EXPELL out the weakest place in your body and luckily that was not your teethe.
The sitz bath will "correct" the elimination process and liver tonic typ herbs be the herbal solution.
Note: Many times I only answer a post once, since the new version was put into place sometime back, the post does not come direct to my e-mail, so I never know who makes a reply. If you make a post and don't see me answer it, then odds are I never saw it, always remember to e-mail when the question is important.