Dental influences caused by changes in fluorid concentration of drinking water

饮用水氟浓度变化对牙齿的影响

• 批准号: 09672115
• 负责人: YONEMITSU Masami
• 金额: $ 2.3万
• 依托单位: Iwate Medical University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09672115/
• 关键词: Dental fluorosis; Fluoride; Drinking water; Natural fluoride area; Epidemiological study; 疫学調査; 飲料水中フッ素; 飲水歴; う蝕; 歯科保健; 水質中フッ素; 歯質耐酸性; 生活環境; 飲料水中フッ素濃度; 飲水暦

The aim of this study was to assess the influence of changes in fluoride concentrations of drinking water in a naturally fluoridated town (ltayanagi) in Japan where non-fluoridated water has supplied since 1988. Dental examination was carried out in 1998 for children aged 6 -14 years old in the town. In addition, their residential history and water fluoride concentrations were examined. Since underground water containing fluoride were still used for daily living even after 1988. The F concentrations of the natural water ranged from 0.25 to 1.52 ppm, whereas supplied water had 0.05 ppm F.According to the questionair, 17% children still used underground water for drinking. Mean DMFT index of children aged 6 - 11 years old were nearly equal to the data from the national survey in 1993. Since the DMFT index of children was nearly half of the national data in 1975 - 1976, it was found that the caries prevalence in the area increased recently. Correspondingly, prevalence rate of dental fluorosis decreased among children. Hence, it was concluded that the benefits for caries prevention by water born fluoride has lost in the subjected area. Considering possible increase of caries prevalence in the near future, some effective dental health programs should be required.

本研究的目的是评估自1988年以来供应非氟化水的日本自然氟化城镇（ltayanagi）饮用水中氟化物浓度变化的影响。1998年对该镇6至14岁的儿童进行了牙科检查。此外，他们的居住史和水氟浓度进行了检查。由于1988年以后，人们的日常生活仍然使用含氟地下水。天然水氟含量为0.25 ~ 1.52ppm，自来水氟含量为0.05ppm。调查结果显示，17%的儿童仍饮用地下水。6 ~ 11岁儿童DMFT指数均值与1993年全国调查结果基本一致。由于1975 ~ 1976年儿童龋均指数接近全国的一半，故近年来该区儿童患龋率有上升趋势。儿童氟斑牙患病率相应下降。因此，可以得出结论，水生氟防龋的好处已经失去了在受试地区。考虑到在不久的将来龋病患病率可能会增加，应该需要一些有效的牙齿健康计划。

项目成果

KAMEGAI T.他: "Biting force and Occlusion of children in northern district Japan"J. Dent. Res.. 79. 327 (2000)

KAMEGAI T. 等人：“日本北部地区儿童的咬合力和咬合” J. Dent. 79. 327 (2000)

Kamegai T, Tatsuki T, Kumeda J, Mitsuhashi H, Tatsuki Y, Nagano H, Kamegai T, Inaba D: "Biting force and occlusion of children in northern district Japan"J Dent Res. 79 (Special Issue). 32 (2000)

Kamegai T、Tatsuki T、Kumeda J、Mitsuhashi H、Tatsuki Y、Nagano H、Kamegai T、Inaba D：“日本北部地区儿童的咬合力和咬合”J Dent Res。