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.