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首页> 外文期刊>Journal of Research in Dentistry >Effect of acidulated phosphate fluoride – gel and foam – on enamel caries-like lesion of primary teeth: an in vitro study
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Effect of acidulated phosphate fluoride – gel and foam – on enamel caries-like lesion of primary teeth: an in vitro study

机译：酸性磷酸盐氟化物（凝胶和泡沫）对乳牙龋齿样病变的影响：一项体外研究

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The purpose of this study was to evaluate in vitro the effect of APF, gel and foam, for 1 to 4 minutes, on artificial enamel caries-like lesion of primary teeth submitted to the pH cycling. The specimens with medium values of initial superficial enamel micro-hardness between 272 and 331KHN were selected for the formation of the artificial caries lesion. Later, they were randomly divided into 6 groups (n=15): no pH cycling control, cycled control, gel 1min, gel 4min, foam 1min and foam 4min.The no pH cycling control group was maintained in an humid environment, while the application of APF and the pH cycling were accomplished. After, the specimens were sectioned at the center for the enamel cross-sectional micro-hardness test. The values of micro-hardness of the depths from 20 to 180mm were converted into percentile of mineral volume (%Vol) and the area of mineral recovery (?Z R ) was calculated. In spite of there is no statistically significant differences, it was observed through the analysis of the ?Z R a difference in the values for the groups gel 1min and foam 4min (p>0.05). The evaluation of %Vol indicated a significant difference only at 60mm depth (p=0.005). This study concluded that a single application of APF gel or foam, for 1 or 4 minutes, do not remineralize artificial enamel caries-like lesion of primary teeth
机译：这项研究的目的是在1至4分钟内评估APF，凝胶和泡沫对pH循环后的乳牙人工牙釉质龋齿样病变的影响。选择初始表面釉质显微硬度在272至331KHN之间的中等值的标本，以形成人造龋齿病灶。随后将它们随机分为6组（n = 15）：无pH循环对照组，循环对照组，凝胶1min，凝胶4min，泡沫1min和泡沫4min。完成了APF的应用和pH循环。之后，将样品在中心切开以进行搪瓷横截面显微硬度测试。将20至180mm深度的显微硬度值转换为矿物质体积的百分比（％Vol），并计算出矿物质回收面积（ΔZR）。尽管没有统计学上的显着差异，但通过分析ΔZR，观察到凝胶1min和泡沫4min组的值存在差异（p> 0.05）。 ％Vol的评估表明仅在60mm深度有显着差异（p = 0.005）。这项研究得出的结论是，单次应用APF凝胶或泡沫1分钟或4分钟，不会使乳牙的人造釉质龋齿样矿物质再矿化

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