To save articles or get newsletters, alerts or recommendations – all free.
Don’t have an account yet?
Create an account »
Subscribed through iTunes and need an NYTimes.com account?
Learn more »
Need to connect your Home Delivery subscription to NYTimes.com?
Link your subscription »
Article source: http://www.nytimes.com/2016/08/03/health/flossing-teeth-cavities.html