The endemic fluorosis is a kind of endemia widely distributed in Ningxia, and this is strongly related to the special natural geochemical environment of Ningxia.
But too much fluoride, especially for children who's adult teeth are still forming can lead to a problem called dental fluorosis when white patches form on teeth.
壤F与
来自于成
。
病是宁夏广泛分布的一种
4月合集
人的牙齿还在形
，
会导致一种叫做氟斑牙的问题。
