Study shows that secondhand smoke may be linked to oral health.

Studies are now showing that there is a link between your oral health and how much secondhand smoke you are exposed to each week.  It was previously understood that current smokers are twice as likely to have periodontal disease as former smokers and four times as much if you had never smoked.  However, in a recent study that was published in the American Journal of Public Health, it was shown that those who were exposed to secondhand smoke for 25 hours or less a week were 29% more likely to have periodontal disease and those who were exposed to secondhand smoke for 26 or more hours a week were 58% more likely to have periodontal disease.