Tap water natural fluoride and parent‐reported experience of child dental caries in Japan: Evidence from a nationwide birth cohort survey
Tap water natural fluoride and parent‐reported experience of child dental caries in Japan: Evidence from a nationwide birth cohort survey
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日本自来水天然氟化物和家长报告的儿童龋齿经历：来自全国出生队列调查的证据
DOI：
10.1111/cdoe.12847
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发表时间：
2023
影响因子：
2.3
通讯作者：
Aida Jun
中科院分区：
文献类型：
--
作者：
Matsuyama Yusuke;Fujiwara Takeo;Aida Jun
前言饮水加氟是预防龋齿的有效措施。在日本，没有实施人工水氟化，自来水天然氟浓度因土壤性质不同而存在地理差异。本研究旨在探讨自来水天然氟和家长报告的经验，龋齿在children.MethodData从纵向调查的新生儿在二十一世纪，一个国家的出生队列研究，以下所有的婴儿出生在2001年1月10日至17日和7月10日至17日，进行了分析。照顾者回答了孩子的龋齿治疗史，龋齿的代理，每年从5.5岁到12岁（N= 202 517观察34 998名儿童）。从国家统计数据中获得了居住地自来水天然氟浓度的年度数据。交叉分类多级泊松回归模型进行拟合，调整儿童，家庭和市政特征，包括平均收入和牙科诊所dentity.ResultsThe平均自来水天然氟浓度跨城市为0.0887 ppm（SD = 0.0422）。家长报告的儿童龋齿治疗经验的比例从24.9%（12岁）至40.3%（7岁时），生活在天然氟浓度高的城市的儿童中，<0.10、0.10-0.19、0.10-0.19的比例分别为35.0%、35.4%、33.4%和32.3%，0.20-0.29和≥0.30 ppm。控制所有协变量后，自来水天然氟化物增加0.1 ppm与父母报告的儿童龋齿治疗患病率降低3.3%（患病率比= 0.967，95%可信区间：0.939，0.996）显著相关。
IntroductionWater fluoridation is an effective measure to prevent dental caries. In Japan, artificial water fluoridation is not implemented, and tap water natural fluoride concentration geographically differs because of various soil natures. This study aimed to examine the association between tap water natural fluoride and parent‐reported experience of dental caries in children.MethodData from the Longitudinal Survey of Newborns in the twenty‐first century, a national birth cohort study following all infants born between January 10–17 and July 10–17, 2001, were analysed. Caregivers answered the child's caries treatment history, a proxy for dental caries, yearly from 5.5 to 12 years of age (N= 202 517 observations from 34 998 children). The annual data on tap water natural fluoride concentration in the municipality of residence were obtained from the national statistics. Cross‐classified multilevel Poisson regression models were fitted, adjusting for child, household and municipality characteristics, including average income and dental clinic density.ResultsThe average tap water natural fluoride concentration across municipalities was 0.0887 ppm (SD = 0.0422). The proportion of parent‐reported experience of child dental caries treatment ranged from 24.9% (at 12 years) to 40.3% (at 7 years) and was lower among children living in municipalities with high natural fluoride concentrations, which were 35.0%, 35.4%, 33.4% and 32.3% for <0.10, 0.10–0.19, 0.20–0.29 and ≥0.30 ppm respectively. A 0.1 ppm increment in tap water natural fluoride after controlling for all covariates was significantly associated with a lower prevalence of parent‐reported child dental caries treatment by 3.3% (prevalence ratio = 0.967, 95% credible interval: 0.939, 0.996).ConclusionNatural fluoride in tap water showed a protective effect for the parent‐reported experience of child dental caries in Japan.