Yukie Yoshida

Epidemiological Study of Periodontal Disease and White Blood Cell Count among Employees in a Company

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.

Health support system for diabetes prevention using networked health-monitoring equipment

For participants of diabetes prevention programs, we consider that it is effective to record vital signs, such as weight and blood pressure, and to receive instruction based on such readings during the follow-up period in order to avoid rebound. Although the Internet is an effective medium for recording data and reporting everyday health status, health support systems that require the use of a PC can place a heavy burden on users, especially elderly users. In this research, we utilized a sensor information web service which is a home network based on ZigBee, and discuss effective implementation of a follow-up system. We explained and demonstrated the proposed system to participants who had completed a diabetes prevention program and administered a questionnaire about their impression of system use. From the questionnaire results, we clarify the considerations and requirements necessary for introducing such a home network system with the elderly.

Lifestyles and periodontal disease of Japanese factory workers.

The association between lifestyle and periodontal disease as classified by the Community Periodontal Index of Treatment Needs (CPITN) was investigated in 1,821 factory workers, 20–69 years of age, residing in Osaka, Japan. Lifestyles were examined using a questionnaire concerning the smoking habits, alcohol consumption, physical exercise, sleeping hours and dietary habits of male factory workers.Age and sex were strongly associated with the CPITN score. In the male factory workers, the CPITN scores of each age group were significantly greater for smokers than for nonsmokers; mesn ± S.D., 2.41 ± 0.96 and 2.28 ± 0.87, respectively. The CPITN scores were also greater in high-consumption and long-duration smokers, compared to low-consumption and short-duration smokers in male factory workers.Our results show that sex, aging and smoking are risk indicators for periodontal disease.

Cohort study of the total leukocyte count and periodontal disease among company employees

There have been few epidemiological studies of the relationship between the leukocyte count and dental disease. In the present study, therefore, we investigated the relationship between oral health indicated by the Community Periodontal Index of Treatment Needs (CPITN) and the total leukocyte count in the cohort study. The 1,035 subjects were male factory workers employed at a chemical factory in Osaka, Japan. Their oral conditions were recorded as the CPITN score. The relationship between the total leukocyte count and the oral condition of the subjects classified according to their smoking habits was investigated over a 5-year period. Among the current smokers, the total leukocyte count was highest each year for the group with CPITN level 4, followed by those with CPITN levels 3 and 2 in descending order, showing that the total leukocyte count was reduced as the periodontal diseases ameliorated. Among the nonsmokers, the total leukocyte count was high every year in the group with CPITN levels 4 or 3 compared to that of the group with CPITN level 2. The fluctuations of the total leukocyte count in current smokers and nonsmokers whose CPITN score increase or decreased in five years was investigated. There were no significant differences among the all groups.