茶水提液对早期牙釉质龋再矿化作用的研究

目的探讨茶水提物对早期牙釉质龋的再矿化作用。方法 30个牙釉质块随机分为茶水提液组、氟化钠组及去离子水组,建立人工龋模型后分别进入pH循环实验。肉眼观察牙釉质表面人工龋形成情况。采用显微硬度计测定各组标本脱矿前、脱矿后、pH循环后的釉质表面显微硬度值。结果茶水提液组、氟化钠组及去离子水组脱矿后可见开窗区牙釉质呈白垩色。再矿化实验后,各组表面显微硬度均较脱矿后增加(P<0.01);茶水提液组及氟化钠组表面显微硬度高于去离子水组(P<0.01);茶水提液组表面显微硬度高于氟化钠组(P<0.01)。结论茶水提液具有促早期人工釉质龋再矿化的作用。

Remineralization effect of Folium Camelliae water extract on incipient enamel caries

Objective To investigate the remineralization effect of Folium Camelliae water extract on recipient dental enamel caries. Methods Thirty dental enamels specimens were divided into a Folium Camelliae water extract group, a sodium fluoride group, and a deionized water group. After the artificial caries models were developed, the pH cycling tests were performed. The artificial caries formation in dental enamel surface were observed. The micro-hardness values in all specimens were measured by using a micro-hardness tester before demineralization, after demineralization and after pH cycling. Results The window area color of dental enamels were chalky in the Folium Camelliae water extract group, the sodium fluoride group, and the deionized water group after remineralization. After remineralization test, surface micro-hardness measurements in all groups elevated significantly than post- demineralization （ P〈0.01）. Surface micro-hardness measurements in the Folium Camelliae water extract group and the sodium fluoride group were higher than that in the deionized water group（ P〈0.01）. Surface micro-hardness measurements in the Folium Camelliae water extract group were higher than that in the sodium fluoride group （ P 〈0.01）. Conclusion Folium Cameiliae water extract can enhance remineralization of artificial incipient enamel caries.