Sunflower and Sesame oil are supposed to be best, according to a few things i have read.
I know you just told me in one of my posts that alcohol based mouthwashes are not good with you, but they are very efficient at killing germs. I would suggest that, once in a while, brushing gently without paste, and OP with sunflower/sesame, and taking potent, comprehensive, daily multivitamins. I have noticed, though not conclusively, that the vitamins signifigantly help. Definately try that.
I believe that OP increases blood flow tot he gums and mouth, therefor promoting healing. I would suggest keeping at it, or increasing your regimen.