According to [http://thehillsdentalspa.com][1]:

> Regular flossing, long considered an essential part of daily dental
> cleansing, has been found to have a positive effect on your life
> expectancy, increasing it by up to 6 years.

Is this true? How can flossing possibly increase life-span? 

Other articles:

 - http://thehillsdentalspa.com/blog/?p=113
 - http://longevity.about.com/od/liveto100/ss/life-expectancy_4.htm

  [1]: http://dentalplans.lifetips.com/tip/100832/best-dental-plans/best-dental-insurance-tips/flossing-increases-lifespan.html