This CDC recommendation is solely based on an amount that balances the protection from tooth decay while limiting the risk of dental fluorosis.

CDC 的这完全基于在预防蛀牙和限制牙齿氟斑病风险之间取得平衡的剂量。

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.

但是过多的氟化物，尤其是对于儿童来说，年人的牙齿还在段，当牙齿上白色斑块时，就会导致种叫做氟斑牙的问题。