摘要
目的:观察质量分数为6%的生物活性玻璃促进牙釉质再矿化的能力。方法:将40块釉质块建立早期人工釉质龋模型后,随机分为4组(n=10):生物活性玻璃组、GC护牙素组、多乐氟组和去离子水组。各组分别用质量分数为6%的生物活性玻璃溶液、10%的CPP-ACP糊剂、5%的Na F氟保护漆和去离子水进行15 d的再矿化处理,2次/d,每次5 min。扫描电镜观察镜下结构,用显微硬度仪测量釉质表面的显微硬度,X射线能谱分析仪对釉质表面的元素进行分析、计算。结果:各组再矿化后的显微硬度值均较脱矿后增加,生物活性玻璃组和多乐氟组的硬度值差异无显著性,但高于GC组和去离子水组。各组再矿化后的钙磷比值差异均有显著性,生物活性玻璃组、GC护牙素组和多乐氟组均大于去离子水组(P<0.05)。结论:生物活性玻璃溶液促进釉质再矿化的能力与多乐氟的相当。
Objective： To observe the effect of bioactive glass with mass fraction of 6% in the promotion of remineralization enamel with artificial caries. Methods： 40 enamel blocks of early artificial enamel caries model were randomly divided into 4 groups and treated by bioactive glass, with the mass fraction of 6%, 10% of the CPP-ACP paste, 5% NaF fluorine protection paint and deionized water re- spectively, twice a day, five minutes at a time for 15 working days. The microhardness （SMH） of enamel surface was measured by a mi- crohardness instrument, Ca/P ratio was measured by X-ray energy spectrum analyzer of enamel on the surface. Results： After treatment the microhardness of all groups were increased, and bioactive glass group and fluoride group there showed higher SMH than the other 2 group. After treatment Ca/P ratio in bioactive glass group, GC tooth element group and fluorid group was higher than that in deionized water（ P 〈 0.05 ）. Condusion： The bioactive glass solution is samiler to fluorine in the promotion of remineralization enamel with artificial caries.
出处
《实用口腔医学杂志》
CSCD
北大核心
2017年第6期731-734,共4页
Journal of Practical Stomatology
关键词
生物活性玻璃
再矿化
显微硬度
Bioactive glass
Remineralization
Microhardness
