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J Am Dent Assoc, Vol 130, No 11, 1601-1610.
© 1999 American Dental Association |  |
RESEARCH |
Background. Chewing tobacco has high levels of sugars and may be cariogenic, but few studies have investigated such an association. This study examined the relationship between chewing tobacco use and dental caries among U.S. adult men.
Methods. Participants in the Third National Health and Nutrition Examination Survey conducted from 1988 to 1994 were interviewed about tobacco use and examined by dentists. The authors included in their analysis dentate men 18 years of age or older. They calculated the mean number of decayed or filled permanent teeth, or DFT, and decayed or filled coronal tooth surfaces, or DFS, as well as the mean number and percentage of decayed or filled root surfaces, or RDFS, and decayed root surfaces, or RDS, by tobacco-use status. They used multiple logistic regression to examine the association between chewing tobacco use and root-surface caries.
Results. Men who currently used only chewing tobacco had a higher adjusted mean number of DFT than did those who currently used only snuff, only cigarettes or more than one form of tobacco or who never used tobacco. Mean DFS also was higher among chewing tobacco users than among those who used only snuff, only cigarettes or more than one form of tobacco. Chewing tobacco users had a higher mean RDFS and RDS than did the users of other forms of tobacco or nonusers. Current users of chewing tobacco were more than four times as likely as those who never used tobacco to have one or more RDFS or RDS, with a dose-response relationship between number of packages used per week and odds of having root-surface caries.
Conclusions. In addition to its established role as a carcinogen, chewing tobacco may be a risk factor in the development of root-surface caries and, to a lesser extent, coronal caries. This may be due to high sugar content, increased gingival recession and enhanced collagenase activity.
Clinical Implications. Interventions by dentists and other members of the oral health care team to prevent tobacco use and help users quit can reduce the risk of developing oral and systemic disease.
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