著者
WAKAI Kenji NAITO Mariko NAITO Toru NAKAGAKI Haruo UMEMURA Osami YOKOTA Makoto HANADA Nobuhiro KAWAMURA Takashi
出版者
日本疫学会
雑誌
Journal of epidemiology (ISSN:09175040)
巻号頁・発行日
vol.19, no.2, pp.72-80, 2009-03-01
参考文献数
31
被引用文献数
3 9

<b>Background: </b>To examine the association between oral health and general well-being, we are currently conducting a nationwide cohort study comprising members of the Japan Dental Association (JDA). Herein, we describe the study design and the profile of the participants at baseline.<BR><b>Methods: </b>From 2001 through 2006, the participants completed a baseline questionnaire that surveyed factors related to lifestyle, general health, and oral health. Morbidity and mortality have been monitored by using information from fraternal insurance programs operated by prefectural dental associations. All respondents provided written, informed consent for participation and the use of their insurance data.<BR><b>Results: </b>A total of 21 272 JDA members participated in the baseline survey (response rate, 36.2%). Their mean age &plusmn; SD was 52.3 &plusmn; 12.3 years; 8.0% were women. Among the respondents, 30.2% of men and 10.7% of women were current smokers; 73.5% of men and 44.8% of women were current drinkers. The cohort scored higher on oral health indices than did the general Japanese population: dentists were more likely to brush their teeth &ge;3 times/day, to have &ge;20 teeth, to have fewer lost teeth, to be free from periodontal diseases, and to have higher General Oral Health Assessment Index scores. There was, however, considerable inter-individual variation in scores on the indices.<BR><b>Conclusions: </b>More than one-third of JDA members participated in the study. Their oral average health status was better than that of the general population. Nevertheless, it will be possible to compare morbidity and mortality between those with better and worse scores on oral health indices.
著者
Tamaki Yoh Nomura Yoshiaki Takeuchi Hiroaki Ida Hirohisa Arakawa Hirohisa Tsurumoto Akihisa Kumagai Takashi Hanada Nobuhiro
出版者
日本大学歯学部
雑誌
Journal of Oral Science (ISSN:13434934)
巻号頁・発行日
vol.48, no.3, pp.111-116, 2006
被引用文献数
7

The aim of this study was to evaluate the clinical efficacy and safety of a dental drug delivery system (3DS) for the selective reduction of mutans streptococci. Twenty patients with high levels of mutans streptococci in saliva participated. The efficacy of 0.2% chlorhexidine (CHX) delivered by 3DS in reducing the salivary levels of mutans streptococci compared with total streptococci and lactobacilli was investigated. Each subject was treated by professional mechanical tooth cleaning (PMTC) and subsequently individual trays with CHX for 5 min. Salivary bacterial samples were taken at the baseline and weeks 1-12. A significant reduction in the colony count of mutans streptococci was observed during the first 4 weeks compared with the baseline count, while no significant decrease in the count of total streptococci or lactobacilli was found during 12 weeks. In particular, the proportion of mutans streptococci in total streptococci remained low after 12 weeks. Our results indicate that the new 3DS used in combination with PMTC appears to be a promising intraoral drug delivery system which, when used with a low CHX concentration selectively, effectively reduces mutans streptococci in the oral cavity with no adverse effects. (J. Oral Sci. 48, 111-116, 2006)