Woodward M, Walker A R
Department of Applied Statistics, University of Reading, UK.
Br Dent J. 1994 Apr 23;176(8):297-302. doi: 10.1038/sj.bdj.4808437.
An examination is made of data on dental caries amongst 12-year-old children and sugar consumption of the total population for 90 countries. For the whole data set, DMFT score tends to rise with sugar consumption. The linear relationship between the logarithm of DMFT and sugar is estimated to have a slope of 0.021 per kg/year per head of population (P < 0.0001), and accounts for 28% of the variation in DMFT. In contrast, when data from 29 industrialised nations are analysed separately, there is no evidence of a sugar-caries relationship; the slope of the linear regression line is estimated to be -0.013, not significantly different from zero. This latter result is in agreement with the considerable evidence of a lack of strong relationship between the amount of sugar consumed and caries occurrence in Western countries. These results suggest that, in addition to sugar, other factors, such as other aspects of diet, exposure to fluoride and genetic effects, must be taken into account when seeking to explain variations in caries prevalence, and when making recommendations for caries control.
对90个国家12岁儿童的龋齿数据以及总人口的食糖消费量进行了研究。对于整个数据集，DMFT得分往往随着食糖消费量的增加而上升。据估计，DMFT对数与食糖之间的线性关系斜率为每人每年每千克0.021（P < 0.0001），占DMFT变化的28%。相比之下，单独分析29个工业化国家的数据时，没有证据表明食糖与龋齿之间存在关联；线性回归线的斜率估计为-0.013，与零无显著差异。后一结果与西方国家食糖消费量与龋齿发生之间缺乏强关联的大量证据一致。这些结果表明，在试图解释龋齿患病率的差异以及提出龋齿控制建议时，除了食糖之外，还必须考虑其他因素，如饮食的其他方面、氟暴露和遗传效应。
