title: Rheumatoid Arthritis among Periodontitis Patients in Baddi Industrial Estate of Himachal Pradesh, India: A Cross Sectional Study.
abstract: OBJECTIVE
  To determine whether there is a relationship between periodontal disease and rheumatoid arthritis.
  
  
  METHODS
  A total of 1520 (852 - periodontal group; 668 - general group) individuals of 30-70 years age group and residents of Baddi industrial estate in Himachal Pradesh, India, were assessed for the prevalence of rheumatoid arthritis and Periodontal Disease (PD). The prevalence and severity of periodontitis were determined by recording the Community Periodontal Index (CPI) with loss of attachment, based on WHO guidelines (1997). The criteria considered for diagnosis of rheumatoid arthritis were as those given by American Rheumatism Association -1988. Frequency distributions for bivariate analysis and logistic regression for multivariate analysis were used for assessment of statistical association between variables.
  
  
  RESULTS
  In patients referred for periodontal treatment, the prevalence of rheumatoid arthritis was 4.4%. Females (3.2%) and subjects aged above 50 years (3.5%) showed a significantly higher prevalence in comparison to their counterparts (p<0.001). The odds of rheumatoid arthritis in females were nearly three times (OR=2.813) higher than those in males, which was also statistically significant (p<0.05).
  
  
  CONCLUSIONS
  The findings provide evidence of a relationship, suggesting that individuals with moderate to severe periodontal disease are at higher risk of suffering from rheumatoid arthritis and vice versa.
authors.affiliation: Professor and Head, Department of Periodontics, Swami Devi Dayal Hospital and Dental College , India .
authors.forename: Yash Paul
authors.initials: YP
authors.lastname: Dev
authors.forename: Nitin
authors.initials: N
authors.lastname: Khuller
authors.forename: Patthi
authors.initials: P
authors.lastname: Basavaraj
authors.forename: Suresh
authors.initials: S
authors.lastname: G
keywords: Dental health; Extra-synovial; Periodontitis; Rheumatoid arthritis