解放前 ,广东省某乡村 ,每当婴儿出生后就被送到离村较远的外婆或亲戚家 ,到六、七岁才接回父母家 ,否则小孩子刚长出的牙齿珐琅质便受到破坏 ,牙齿表面原有的光泽逐渐消失 ,出现黄、褐、棕或黑色的斑点及斑块。医学上把这种病症叫作“斑釉症”。为什么在此乡村长大的孩子会有 Before the liberation, a village in Guangdong province was sent back to her grandmother or relatives far away from her village when her baby was born, and her parents' family was not returned until she was six or seven years old. Otherwise, the tooth enamel her child just grew was destroyed , The original luster of the tooth surface gradually disappear, yellow, brown, brown or black spots and plaques appear. Medically this condition is called “spot glaze disease.” Why children grow up in this village will have