The incidence of children suffering from mottled teeth was .0% and .0%.
The incidence of children suffering from mottled teeth was .0% and .0%.
个监测点8~岁儿童氟斑牙患病率分别为 .0%和.0%,平均为 7.9 %。
The incidence of children suffering from mottled teeth was .0% and .0%.
个监测点8~岁儿童氟斑牙患病率分别为 .0%和.0%,平均为 7.9 %。