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氟(F~-)是机体代谢过程中必需的微量元素之一,每人每日需要量约1.0～1.5mg,它通过饮水和食物进入机体。一定量的氟对牙齿有保护和防龋作用,长期摄入过量的氟蓄积于体内可引起氟斑牙(斑釉症)乃至氟骨症,造成中毒。为了解我县饮水含氟的分布与氟斑牙、龋齿患病的关系,我们于1980年11月、1981年4月对我县饮用水源进行了含氟量检测,并对全县94所中、小学校的学生进行了氟斑牙及龋齿流行病方面的调查,现将调查的结果报告如下。一般情况和调查检测方法吴忠县地处宁夏回族自治区中部,面积为1,112平方公里。北部地区为引黄灌区,有黄河、秦渠、汉渠、东干渠、清水沟、山水
Fluoride (F ~ -) is one of the essential trace elements in the metabolism of the body, the daily needs of about 1.0 ~ 1.5mg per person, which through the drinking water and food into the body. A certain amount of fluoride has protective and anticorrosive effects on the teeth. Long-term intake of excess fluoride accumulates in the body and can cause dental fluorosis (plaque glaucoma) and even skeletal fluorosis, resulting in poisoning. In order to understand the distribution of fluorine in drinking water in our county and the relationship between dental fluorosis and dental caries, we tested the fluorine content of drinking water in our county from November 1980 to April 1981, Secondary and primary school students carried out dental fluorosis and dental caries epidemiological survey, the results of the survey are reported below. General situation and investigation and testing methods Wuzhong County is located in the central Ningxia Hui Autonomous Region, an area of 1,112 square kilometers. Northern Yellow River Irrigation District, the Yellow River, Qin Drainage, Han ditch, the East Canal, Qing ditch, landscape