{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T17:05:41Z","timestamp":1792515941666,"version":"4.5.0"},"reference-count":48,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2020,11,18]],"date-time":"2020-11-18T00:00:00Z","timestamp":1605657600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["aap.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2021,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>A J\u2010shaped relationship of body mass index (BMI) with severe periodontitis has been reported. However, it is unknown for other anthropometric indexes in young adults.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A cross\u2010sectional study examined the relationships in 325 military men and women, aged 20 to 45 years in Taiwan. Anthropometric indexes included BMI, waist circumference (WC), and waist\u2010to\u2010height ratio (WHtR). The severity of localized periodontitis was defined as healthy (n\u00a0=\u00a042), Stage I (initial) (n\u00a0=\u00a0228), and Stage II\/III (moderate\/severe) (n\u00a0=\u00a055) according to the 2017 Periodontal Diseases Classification. Smooth curve fitting and multiple logistic regression analyses adjusting for age, sex, betel nut consumption, and smoking were used to determine the threshold effect between various anthropometric and the risk of localized Stage II\/III periodontitis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In the spline smoothing plot, the turning points for BMI, WC, and WHtR were 26.1\u00a0kg\/m<jats:sup>2<\/jats:sup>, 90.0\u00a0cm, and 0.50, respectively, and a J\u2010shaped relationship was found for BMI (the likelihood ratio test, <jats:italic>P<\/jats:italic>\u00a0&lt;0.001). In the multiple logistic regressions, BMI \u226527.0\u00a0kg\/m<jats:sup>2<\/jats:sup>, WC \u226590.0\u00a0cm and WHtR \u22650.50 were associated with higher risk of localized Stage II\/III periodontitis than their counterparts (24.0 to 26.9\u00a0kg\/m<jats:sup>2<\/jats:sup> for BMI) (odds ratios [OR] and 95% confidence intervals: 4.16 [1.39 to 12.49], 2.65 [1.01 to 7.11], and 2.95 [1.20 to 7.24], respectively; all <jats:italic>P<\/jats:italic> values\u00a0&lt;0.05). However, the risk for BMI\u00a0&lt;24.0\u00a0kg\/m<jats:sup>2<\/jats:sup> was not significant (OR, 1.47 [0.47 to 4.54]).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>In young adults, obesity defined by various anthropometrics was consistently associated with localized Stage II\/III periodontitis and a J\u2010shaped association was suggestive for BMI.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jper.20-0275","type":"journal-article","created":{"date-parts":[[2020,11,3]],"date-time":"2020-11-03T11:49:46Z","timestamp":1604404186000},"page":"958-967","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Comparisons of various anthropometric indexes with localized Stage II\/III periodontitis in young adults: The CHIEF oral health study"],"prefix":"10.1002","volume":"92","author":[{"given":"Kun\u2010Zhe","family":"Tsai","sequence":"first","affiliation":[{"name":"Department of Medicine Hualien Armed Forces General Hospital  Hualien Taiwan"},{"name":"Departments of Dentistry Tri\u2010Service General Hospital  Taipei Taiwan"},{"name":"Graduate Institute of Dental Science National Defense Medical Center  Taipei Taiwan"},{"name":"School of Dentistry National Defense Medical Center  Taipei Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ren\u2010Yeong","family":"Huang","sequence":"additional","affiliation":[{"name":"Departments of Dentistry Tri\u2010Service General Hospital  Taipei Taiwan"},{"name":"Graduate Institute of Dental Science National Defense Medical Center  Taipei Taiwan"},{"name":"School of Dentistry National Defense Medical Center  Taipei Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wan\u2010Chien","family":"Cheng","sequence":"additional","affiliation":[{"name":"Departments of Dentistry Tri\u2010Service General Hospital  Taipei Taiwan"},{"name":"Graduate Institute of Dental Science National Defense Medical Center  Taipei 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Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gen\u2010Min","family":"Lin","sequence":"additional","affiliation":[{"name":"Department of Medicine Hualien Armed Forces General Hospital  Hualien Taiwan"},{"name":"Departmnet of Internal Medicine Tri\u2010Service General Hospital, National Defense Medical Center  Taipei Taiwan"},{"name":"Department of Preventive Medicine Northwestern University Feinberg School of Medicine  Chicago Illinois USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,11,18]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijerph16193730"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(18)32537-6"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0765.2005.00813.x"},{"key":"e_1_2_8_5_1","first-page":"2352","article-title":"Inflammation and obesity 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