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

CDC 的这一建议完全基于在预防蛀牙和限制牙齿氟斑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，其是对于儿童来说，成年人的牙齿还在形成阶段，当牙齿上形成白色斑块时，就会导致一种叫做氟斑牙的问题。