Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
Prev Med. 2010 Apr;50(4):173-9. doi: 10.1016/j.ypmed.2010.01.010. Epub 2010 Jan 25.
To examine the association between green tea consumption and tooth loss.
We analyzed cross-sectional data from the Ohsaki Cohort 2006 Study. Usable self-administered questionnaires about green tea consumption and tooth loss were returned from 25,078 persons (12,019 men and 13,059 women) aged 40 to 64 years in Japan. Multivariate logistic regression analysis was used to calculate odds ratios (ORs) for tooth loss using 3 cut-off points of 10, 20, and 25 teeth relative to each category of green tea consumption.
Consumption of > or = 1 cup/day of green tea was significantly associated with decreased odds for tooth loss, and the association appeared to fit a threshold model. In men, the multivariate-adjusted ORs for tooth loss with a cut-off point of <20 teeth associated with different frequencies of green tea consumption were 1.00 (reference) for <1 cup/day, 0.82 (95% CI, 0.74-0.91) for 1-2 cups/day, 0.82 (95% CI, 0.73-0.92) for 3-4 cups/day, and 0.77 (95% CI, 0.66-0.89) for > or = 5 cups/day. The corresponding data for women and the results for cut-off points of 10 and 25 teeth were essentially the same.
The present findings indicate an association of green tea consumption with decreased odds for tooth loss.
研究绿茶摄入与牙齿缺失之间的关联。
我们分析了来自大崎队列研究 2006 年的数据。这项研究共纳入了日本 25078 名 40-64 岁的参与者，他们填写了有关绿茶摄入和牙齿缺失的自填式问卷。使用多变量逻辑回归分析，计算了与绿茶摄入相关的牙齿缺失比值比（OR），采用了 10、20 和 25 颗牙齿缺失作为 3 个截断点，与每个绿茶摄入类别相对应。
每天饮用≥1 杯绿茶与牙齿缺失的几率降低显著相关，且这种关联似乎符合阈值模型。在男性中，与不同频率的绿茶摄入相关的牙齿缺失截断点<20 颗的多变量校正 OR 分别为：<1 杯/天（参考）、1-2 杯/天（0.82，95%CI，0.74-0.91）、3-4 杯/天（0.82，95%CI，0.73-0.92）和≥5 杯/天（0.77，95%CI，0.66-0.89）。女性的相应数据和 10 颗和 25 颗牙齿缺失的截断点结果基本相同。
本研究结果表明，绿茶摄入与牙齿缺失几率降低有关。
