Hi rainbird, no, haven't tried periogen. I looked it up and I don't care for the ingredients so won't go there.
I feel my gums and teeth are improving. It does take time. Dr. Manhart said it takes about a year to completely eradicate the infection. I can be patient. I'm doing other things too - herbs, supplements, dietary changes. I 'cheated' on diet over the holiday weekend and my gums were bleeding a little today when I brushed, so I'm back on the straight and narrow path.