Association of combustible and non-combustible tobacco use with clinically diagnosed adverse oral health outcomes among US adults, National Health and Nutrition Examination Survey (2009-2014)

Introduction There is an established link between tobacco use and adverse oral health outcomes. However, there is a paucity of research exploring the effect of various tobacco products on clinically diagnosed adverse oral health outcomes. Methods Data were pooled from three cycles of the National Health and Nutrition Examination Survey: 2009-2010; 2011-2012; and 2013-2014 (n = 11,453). Multivariable logistic regressions examined the associations between periodontitis and dental caries with the type of tobacco product used (combustible, non-combustible or both). Results Overall, 42.3% of the study sample had any periodontitis, 7.8% had severe periodontitis and 21.7% had dental caries. There was a higher prevalence of periodontitis and caries among combustible tobacco users than non-combustible tobacco use; 62.1% of combustible tobacco smokers had any periodontitis, 17.1% had severe periodontitis, while 39.4% of adults with dental caries were dual users. Compared to non-smokers, combustible tobacco use increased the odds of any periodontitis (adjusted odds ratio [aOR] 2.81, 95% confidence interval [CI] 2.28, 3.45) and severe periodontitis (aOR 2.62, 95% CI 1.90, 3.61). Compared to non-smokers, both combustible tobacco (aOR 2.11, 95% CI 1.61, 2.76) and non-combustible tobacco use (aOR 2.09, 95% CI 1.19, 3.66) increased the odds of dental caries. Discussion and Conclusions In this study of US adults, combustible tobacco use was associated with periodontitis and dental caries, while non-combustible tobacco use was associated with dental caries. In addition to conducting extensive oral health screening among all smokers, oral health-care providers should counsel smokers on the need for smoking cessation.