CONCLUSION: Injury to dental pulp can take place in enamel caries stage, and it is associated with caries activity.
少量炎症细胞主要为淋巴细胞和单核细胞。结论：釉质龋时牙髓可以出现损伤性变化，且与龋损活动性相关。
2
The results show that the spherical nano HA have a remineralization effect on the artificial dentalcaries dramatically, and can prevent and decrease caries.
实验结果证明：球状纳米羟基磷灰石对人工龋有明显的再矿亿作用，可以抑制、减弱致龋菌的对釉质的脱矿。
3
Results 564 in the 985 preschool children suffered from dentalcaries, incidence of caries was 57.26%.