Effect of glass ion protective film on early caries remineralization of deciduous anterior teeth in vitro
玻璃离子保护膜对乳前牙早期龋再矿化作用的体外研究

摘要

目的 比较玻璃离子保护膜与氟保护漆对牙釉质早期脱矿的体外再矿化作用。方法 通过收集5-8岁因乳牙滞留而拔除的乳前牙60颗，随机分为3组（n=20），进行样本制备、脱矿，并将三组分别使用玻璃离子保护膜（A组）、氟保护漆（B组），唾液空白组（C组）进行再矿化处理，采用SEM观察釉质表面形貌，显微硬度计测定釉质表面显微硬度（SMH）变化，使用SPSS22.0软件进行统计分析。结果 SEM结果显示，未作处理的牙釉质表面平坦、均匀，脱矿后的牙釉质表面釉柱间质溶解，呈蜂窝状，再矿化处理后A组可见大量的矿物质沉积，B组釉质孔隙有部分片状或球状沉积物，C组有少量点球状沉积物分布。结论 两种材料对乳牙釉质脱矿均有较好的再矿化作用，而玻璃离子保护膜因再矿化作用更明显。

Abstract

Objective To compare the in vitro remineralization effects of glass ion protective film and fluorine protective paint on early demineralization of tooth enamel.
Methods A total of 60 deciduous anterior teeth aged 5-8 years were randomly divided into 3 groups (n=20) for sample preparation and demineralization. The three groups were treated with glass ion protective film (group A), fluorine protective paint (group B) and saliva blank group (group C), respectively, and the enamel surface morphology was observed by SEM. The microhardness (SMH) of enamel surface was measured by microhardness tester, and statistical analysis was performed using SPSS22.0 software.
Results SEM results showed that the surface of untreated enamel was flat and uniform, the enamel column interstitial dissolved after demineralization, and A large number of mineral deposits were visible in group A after recrystallization, some flake or spherical deposits were found in the enamel pores of group B, and a small number of spherical deposits were found in group C.
Conclusion   Both materials have good remineralization effect on deciduous tooth enamel demineralization, and the glass ion protective film has more obvious remineralization effect.