Ishikawa Shigeo, Konta Tsuneo, Susa Shinji, Ishizawa Kenichi, Makino Naohiko, Ueno Yoshiyuki, Okuyama Naoki, Iino Mitsuyoshi
Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata, 990-9585, Japan.
Department of Public Health and Hygiene, Yamagata University Graduate School of Medicine, 2-2-2 Iida-Nishi, Yamagata, 990-9585, Japan.
Clin Oral Investig. 2023 Dec;27(12):7345-7358. doi: 10.1007/s00784-023-05325-3. Epub 2023 Oct 20.
This cross-sectional study investigated the factors associated with weight gain ≥ 10 kg after 20 years of age in the general Japanese population, with a focus on the number of teeth.
We included individuals aged ≥ 40 years from Yamagata prefecture, Japan from 2017-2021. A postal survey was conducted using a self-administered questionnaire; 5,940 participants were included in the final analysis. The questionnaire included items on lifestyle factors, medical history, physical and mental conditions, oral health, and dietary intake. A multivariate logistic regression analysis was used to identify independent associations between weight gain ≥ 10 kg after 20 years of age and various parameters; adjusted odds ratios (ORs) and 95% confidence intervals (CIs) were estimated.
Less than 20 teeth, male sex, drinking habit frequency, eating very fast or fast, and a higher frequency of eating-away-from-home were significant factors associated with weight gain ≥ 10 kg after 20 years of age; individuals with < 20 versus > 20 teeth exhibited a 1.35-fold higher OR (95% CI 1.15-1.59; p < 0.01).
Our results suggest that having < 20 teeth may affect weight gain ≥ 10 kg after 20 years of age. However, owing to the cross-sectional study design, causality could not be determined. Therefore, maintaining healthy lifestyle behaviors to avoid tooth loss may also affect weight gain ≥ 10 kg after 20 years of age.
Having < 20 teeth has the potential to affect long-term weight gain after 20 years of age.
本横断面研究调查了日本普通人群20岁后体重增加≥10千克的相关因素，重点关注牙齿数量。
我们纳入了2017年至2021年来自日本山形县年龄≥40岁的个体。通过自填式问卷进行邮寄调查；最终分析纳入了5940名参与者。问卷包括生活方式因素、病史、身心状况、口腔健康和饮食摄入等项目。采用多因素逻辑回归分析确定20岁后体重增加≥10千克与各种参数之间的独立关联；估计调整后的比值比（OR）和95%置信区间（CI）。
牙齿少于20颗、男性、饮酒习惯频率、进食速度非常快或快以及外出就餐频率较高是20岁后体重增加≥10千克的显著相关因素；牙齿<20颗与>20颗的个体相比，OR值高1.35倍（95%CI 1.15-1.59；p<0.01）。
我们的结果表明，牙齿少于20颗可能会影响20岁后体重增加≥10千克。然而，由于横断面研究设计，无法确定因果关系。因此，保持健康的生活方式行为以避免牙齿脱落也可能会影响20岁后体重增加≥10千克。
牙齿少于20颗有可能影响20岁后的长期体重增加。
