Abstract
Epidemiological Study of Periodontal Disease and White Blood Cell Count among Employees in a Company: Yukie YOSHIDA, et al. Osaka Prefectural College of Health Science—The purpose of this study was to investigate the relationship between the white blood cell (WBC) count and periodontal disease as classified by the Community Periodontal Index of Treatment Needs (CPITN) in 1, 241 male Japanese factory workers by determining their WBC count and the extent of their periodontal disease. The results obtained were as follows: in both smoker and non-smoker, the results of a two-way ANOVA indicated that the CPITN score 3 and 4 groups had a significantly higher WBC count than the CPITN score 0, 1 and 2 groups. The results of multiple regression analysis indicated that the WBC counts were significantly associated with age, smoking and the CPITN score. It appeared that there was a significant relationship between the WBC count and the prevalence of periodontal disease among employees in a company. (J Occup Health 1997; 39: 92-94)
