I floss regularly... every major religious holiday... like clockwork. Also, I use a fluoride mouthwash daily. I have been using a sonic toothbrush for the last 15 years or so. It seems to help but doesn't quite do a complete job for keeping gums ship shape. Finally, I consume mass quantities of coffee which helps by torturing all those little bacteria with a hot steamy staining liquid bath periodically throughout the day.
- Jkram|ɯɐɹʞſ