Ju Hee Han1, Jin Woo Park1, Kyung Do Han2, Jun Beom Park3, Miri Kim4, Ji Hyun Lee1. 1. Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. 2. Department of Statistics and Actuarial Science, Soongsil University, Seoul, Republic of Korea. 3. Department of Periodontics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. 4. Department of Dermatology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Abstract
BACKGROUND: Periodontitis is a chronic inflammatory disorder involving the periodontium. The precise nature of the association between periodontitis and psoriasis has not been determined. OBJECTIVE: This nationwide population-based study investigated the relationship between periodontitis and the risk of psoriasis. METHODS: A health screening database, which is a sub-dataset of the Korean National Health Insurance System database, was used in this study. Subjects with (n = 1,063,004) and without (n = 8,655,587) periodontitis who underwent health examinations from January to December 2009 were followed for 9 years. RESULTS: In multivariable analysis, compared to the non-periodontitis group, periodontitis patients had a significantly higher risk of developing psoriasis (hazard ratio 1.116, 95% confidence interval 1.101-1.13). Non-smokers with periodontitis had an 11% increase in risk of psoriasis and smokers with periodontitis had a 26.5% increase in risk of psoriasis compared to non-smokers without periodontitis. CONCLUSION: Our study highlights periodontitis as a potential independent risk factor for psoriasis, increasing awareness of the synergistic role of smoking and periodontitis in the pathogenesis of psoriasis.
BACKGROUND: Periodontitis is a chronic inflammatory disorder involving the periodontium. The precise nature of the association between periodontitis and psoriasis has not been determined. OBJECTIVE: This nationwide population-based study investigated the relationship between periodontitis and the risk of psoriasis. METHODS: A health screening database, which is a sub-dataset of the Korean National Health Insurance System database, was used in this study. Subjects with (n = 1,063,004) and without (n = 8,655,587) periodontitis who underwent health examinations from January to December 2009 were followed for 9 years. RESULTS: In multivariable analysis, compared to the non-periodontitis group, periodontitis patients had a significantly higher risk of developing psoriasis (hazard ratio 1.116, 95% confidence interval 1.101-1.13). Non-smokers with periodontitis had an 11% increase in risk of psoriasis and smokers with periodontitis had a 26.5% increase in risk of psoriasis compared to non-smokers without periodontitis. CONCLUSION: Our study highlights periodontitis as a potential independent risk factor for psoriasis, increasing awareness of the synergistic role of smoking and periodontitis in the pathogenesis of psoriasis.
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