Lima Y B O, Cury J A
Faculty of Dentistry of Piracicaba, Unicamp, Campinas, Brazil.
Caries Res. 2003 Sep-Oct;37(5):335-8. doi: 10.1159/000072164.
Since the optimum fluoride concentration in drinking water established for temperate countries has been considered not to be appropriate for tropical and subtropical climates, this study was conducted in Piracicaba, a subtropical, optimally fluoridated Brazilian community. The daily fluoride intake by 23 children (aged 20-30 months) from diet (liquids and solids) during the four seasons of the year was evaluated. Duplicate-plate samples of foods and beverages were collected for 2 days in each season of the year. The difference of fluoride intake during the 4 seasons was not statistically significant (p>0.05). However, the adjusted data, based on the volume of the diet collected and on the assumption of a constant fluoride concentration in the drinking water, showed that fluoride intake during spring-summer was statistically higher than that observed during the fall-winter seasons (p<0.05). The fluoride dose to which the children were submitted during the hot seasons would be 19% higher than that found during the cold ones. Although this dose difference would not to be a concern for a subtropical area, it could be relevant for a region with a genuine tropical climate.
由于为温带国家确定的饮用水中最佳氟化物浓度被认为不适用于热带和亚热带气候，本研究在巴西亚热带的皮拉西卡巴市进行，该市饮用水中氟化物含量处于最佳水平。评估了23名年龄在20至30个月的儿童在一年四个季节中通过饮食（液体和固体）摄入氟化物的情况。在一年中的每个季节收集2天的食物和饮料重复样本。四个季节中氟化物摄入量的差异无统计学意义（p>0.05）。然而，根据收集的饮食量以及饮用水中氟化物浓度恒定的假设进行调整后的数据显示，春夏季的氟化物摄入量在统计学上高于秋冬季节（p<0.05）。炎热季节儿童摄入的氟化物剂量比寒冷季节高19%。虽然这种剂量差异对于亚热带地区来说可能不是问题，但对于真正的热带气候地区可能是相关的。
