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目的:比较几种不同的碳酸饮料对青少年牙釉质的脱矿作用。方法:采用维氏显微硬度仪,测定经3种不同饮料(A组:雪碧;B组:芬达;C组:百事可乐),以蒸馏水为对照组(D组)浸泡的年轻恒牙牙釉质的表面显微硬度变化。扫描电镜(SEM),观察并比较经3种不同饮料浸泡的年轻恒牙牙釉质表面的形态变化。采用SPSS17.0软件对结果进行分析。结果:3种饮料均可导致年轻恒牙牙釉质表面显微硬度下降(P<0.05)。不同种类饮料对牙釉质的脱矿程度不同,A组与B组间硬度值P<0.05,有统计学意义;A组与C组间硬度值P<0.05,有统计学意义;B组与C组间硬度值P>0.05,无统计学意义。3种碳酸饮料浸泡一周后的牙齿,其釉质表面均有不同程度的脱矿现象,扫描电镜(SEM)可见牙釉质表面形态不规则,组织结构疏松,并可见松软悬浮物附着;釉柱不均匀断裂,形成无数微小间隙呈凹凸不平的粗糙面,局部可呈现深坑样外观。结论:碳酸饮料都能导致青少年牙釉质脱矿,其差异程度有统计学意义。
Objectives: To compare the demineralization effects of several different carbonated drinks on adolescent enamel. Methods: Vickers microhardness tester was used to determine the effect of enamel on young permanent teeth soaked in distilled water as control group (group D) with three different beverages (group A: Sprite; group B: Fanta; group C: Pepsi) Surface microhardness changes. Scanning electron microscopy (SEM) was used to observe and compare the morphological changes of the enamel surface of young permanent teeth soaked with three kinds of different beverages. The results were analyzed using SPSS17.0 software. Results: All the three kinds of beverages can lead to the decrease of microhardness of young permanent teeth enamel surface (P <0.05). Different types of drinks have different degrees of demineralization on enamel, the hardness values of group A and group B were significantly lower than those of group B (P <0.05), the hardness values of group A and group C were significantly lower than those of group C Between groups hardness value P> 0.05, no statistical significance. Three kinds of carbonated beverages were soaked for one week that their enamel surfaces had different degrees of demineralization. Scanning electron microscopy (SEM) showed that the surface morphology of enamel was irregular, the structure of the tissues was loose and the soft suspended solids were attached. Fracture, the formation of countless small gap was uneven rough surface, the local can show a deep pit-like appearance. Conclusion: Carbonated drinks can cause adolescent enamel demineralization, the difference was statistically significant.