Psoriasis and oral health in adult United States population: a cross-sectional study

Objectives To detect the association between psoriasis as an exposure and oral health conditions as outcomes represented by periodontal and dentition status. This was addressed by analysis of a large number of adults in the United States. Methods By using The National Health and Nutrition Examination Survey datasets from 2009 to 2014, we performed a cross-sectional analysis of 11,726 participants included in our study population. For participants aged ≥ 30 years, the psoriasis status was assessed from the medical questionnaire. We used data from periodontal and oral examinations to assess the oral conditions of our participants. We examined the association between psoriasis as exposure and moderate/severe periodontitis and non-functional dentition as outcomes. Results The weighted prevalence of psoriasis was 3%, 44% for moderate/severe periodontitis, and 20.5% for non-functional dentition. The fully adjusted model showed no significant association between psoriasis and moderate/severe periodontitis (Prevalence Ratio 1.02, 95% CI 0.9–1.2, p = 0.8). There was no statistically significant association between psoriasis and non-functional dentition except in the fully adjusted model it became statistically significant (Prevalence Ratio 0.8, 95% CI 0.7–0.9, p = 0.04). Conclusion Our results showed no association between psoriasis and periodontal or dentition status except in a fully adjusted model for non-functional dentition.