I have read many different studies on the problem and all say that extraction of all pre molars and molars is the only way to get complete relief. The anti-inflammatory therapy with cortisone and immunostimulants such as immunoregulin may give temporary relief but extraction is the only permanent solution.

http://www.peteducation.com/article....1+2121&aid=368 -
www.cfa.org/articles/health/gingivitis.html
www.drsfostersmith.com/pic/article.cfm?aid=998 -