title: Association between serum concentrations of 25-hydroxyvitamin D3 and periodontal disease in the US population.
abstract: BACKGROUND
  Periodontal disease (PD) is a common chronic inflammatory disease and an important risk factor for tooth loss. Vitamin D might affect periodontal disease risk via an effect on bone mineral density (BMD) or via immunomodulatory effects.
  
  
  OBJECTIVE
  The objective was to evaluate whether serum 25-hydroxyvitamin D(3) [25(OH)D(3)] concentrations are associated with PD in the third National Health and Nutrition Examination Survey.
  
  
  METHODS
  We analyzed data on periodontal attachment loss (AL) and serum 25(OH)D(3) concentrations from 11 202 subjects aged > or =20 y. Mean AL was modeled in a multiple linear regression with quintile of serum 25(OH)D(3) concentration as an independent variable. The model was stratified by age and sex and was adjusted for age within age groups, race or ethnicity, smoking, diabetes, poverty income ratio, body mass index, estrogen use, and gingival bleeding.
  
  
  RESULTS
  25(OH)D(3) concentrations were significantly and inversely associated with AL in men and women aged > or =50 y. Compared with men in the highest 25(OH)D(3) quintile, those in the lowest quintile had a mean AL that was 0.39 mm (95% CI: 0.17, 0.60 mm) higher; in women, the difference in AL between the lowest and highest quintiles was 0.26 mm (0.09, 0.43 mm). In men and women younger than 50 y, there was no significant association between 25(OH)D(3) and AL. The BMD of the total femoral region was not associated with AL and did not mediate the association between 25(OH)D(3) and AL.
  
  
  CONCLUSIONS
  Low serum 25(OH)D(3) concentrations may be associated with PD independently of BMD. Given the high prevalence of PD and vitamin D deficiency, these findings may have important public health implications.
authors.affiliation: Department of Periodontology and the Department of Oral Surgery and Oral Radiology, Charité, Humboldt University of Berlin, Germany. tdietric@bu.edu
authors.forename: Thomas
authors.initials: T
authors.lastname: Dietrich
authors.forename: Kaumudi J
authors.initials: KJ
authors.lastname: Joshipura
authors.forename: Bess
authors.initials: B
authors.lastname: Dawson-Hughes
authors.forename: Heike A
authors.initials: HA
authors.lastname: Bischoff-Ferrari
mesh_terms: D000328:Adult; D000367:Age Factors; D015519:Bone Density; D002112:Calcifediol / Q000097:blood*; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D009749:Nutrition Surveys; D010510:Periodontal Diseases / Q000097:blood / Q000453:epidemiology* / Q000517:prevention & control; D015995:Prevalence; D012307:Risk Factors; D014481:United States / Q000453:epidemiology; D014808:Vitamin D Deficiency / Q000097:blood / Q000150:complications*
chemical_list: D002112:Calcifediol