Although the overall prevalence of moderate and severe periodontitis declined substantially among adults aged 20-64 years,from nearly 10% during 1988-1994 to 5% during 1999-2004, current smokers continued to be nearly five times as likely to bear periodontitis compared with nonsmokers. Approximately 19% of current smokers had periodontitis during 1988-1994, and compared with 4% of nonsmokers. The prevalence of periodontitis decreased substantially for all adults regardless of smoking status to 11% for smokers and 2% for nonsmokers during 1999-2004. Likewise,periodontitis decreased regardless of sex, and men remained twice as likely to bear periodontitis as women.
Source: cdc.gov