High Parity Is an Independent Risk Factor for Tooth Loss in Women: A Community-Based Takahata Study in Japan
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- Ishikawa Shigeo
- Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University
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- Konta Tsuneo
- Department of Public Health and Hygiene, Yamagata University Graduate School of Medicine
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- Susa Shinji
- Department of Neurology, Hematology, Metabolism, Endocrinology, and Diabetology, Yamagata University Faculty of Medicine
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- Edamatsu Kaoru
- Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University
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- Ishizawa Kenichi
- Department of Neurology, Hematology, Metabolism, Endocrinology, and Diabetology, Yamagata University Faculty of Medicine Global Center of Excellence Program Study Group, Yamagata University School of Medicine
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- Togashi Hitoshi
- Yamagata University Health Administration Center
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- Nagase Satoru
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine
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- Ueno Yoshiyuki
- Global Center of Excellence Program Study Group, Yamagata University School of Medicine
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- Kubota Isao
- Global Center of Excellence Program Study Group, Yamagata University School of Medicine
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- Yamashita Hidetoshi
- Global Center of Excellence Program Study Group, Yamagata University School of Medicine
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- Kayama Takamasa
- Global Center of Excellence Program Study Group, Yamagata University School of Medicine
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- Iino Mitsuyoshi
- Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University
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Abstract
<p>Risk factors for tooth loss have been widely examined previously. However, no previous study has comprehensively investigated the risk factors, including lifestyle-related specific factors (parity, oral health habits, and socioeconomic status), for fewer than 20 teeth among women in the general population in Japan. This cross-sectional study explored the association of these risk factors, especially parity, with having fewer than 20 teeth among Japanese women. A self-reported questionnaire including items on lifestyle-related risk factors (parity, oral health, diet [e.g., alcohol and sucrose consumption]) and socioeconomic status was sent by post to female residents (age ≥ 40 years) of Takahata town, Yamagata Prefecture, in 2005. Multivariate logistic regression analysis including 3,854 eligible participants was performed to investigate the association between various factors (including parity) and having fewer than 20 teeth. The results indicated that, compared with nulliparous women, women with two, three, and four completed pregnancies had 2.485-, 2.844-, and 4.305-fold increased risk of having fewer than 20 teeth, respectively. Our study is the largest-scale study of the general female population in Japan and the first study to comprehensively investigate risk factors (parity, oral health status, and socioeconomic status) for fewer than 20 teeth. We thus found that higher parity, especially, two or more, was independent risk factors for having less than 20 teeth among Japanese women. In conclusion, the present study emphasizes the importance of good oral health habits in women, especially, during pregnancy and in the postpartum period, to maintain 20 or more teeth.</p>
Journal
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- The Tohoku Journal of Experimental Medicine
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The Tohoku Journal of Experimental Medicine 253 (1), 77-84, 2021
Tohoku University Medical Press