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首页> 外文期刊>Dental Materials Journal >Microhardness of bovine enamel after different fluoride application protocols
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Microhardness of bovine enamel after different fluoride application protocols

机译：不同氟化物施用方案后牛牙釉质的显微硬度

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摘要

The aim of the present study was to evaluate microhardness, mineral recovery and the enamel surface after the application of topical fluoride to artificial dental caries. Twenty-five bovine enamel blocks were prepared for artificial caries-like lesions and randomly divided into five groups (n =5): untreated (C control), 1.23% acidulated phosphate fluoride gel (APG), 2% neutral fluoride gel (NFG), 1.23% acidulated fluoride mousse (AFM) and fluoride varnish (5% Duraphat, DFV). Knoop microhardness (KHN) was evaluated after 7 and 14 days of treatment as well as 1 week after 28 days of treatment. Electron and confocal microscopy and energy dispersive spectroscopy were performed. KHN data were treated with two-way ANOVA (material×time) and Tukey’s test at a 5% significance level. Differences were found among groups over time (p <0.001). Microhardness varied after 7 and 14 days of treatment and remained stable 1 week after 28 days of treatment. Mineral recovery and enamel topography varied among groups, with the fluoride varnish achieving the most uniform topography.
机译：本研究的目的是评估将局部氟化物应用于人造龋齿后的显微硬度，矿物质回收率和牙釉质表面。制备了二十五个牛牙釉质块以用于类似龋齿的病灶，并随机分为五组（n = 5）：未治疗（C对照），1.23％酸化的氟化磷凝胶（APG），2％的中性氟化物凝胶（NFG），1.23％的酸化氟慕斯（AFM）和氟化清漆（5％Duraphat，DFV）。在治疗7天和14天以及治疗28天后1周评估了努氏显微硬度（KHN）。进行了电子和共聚焦显微镜以及能量色散光谱。 KHN数据经过双向ANOVA（材料×时间）和Tukey检验处理，显着性水平为5％。随着时间的流逝，各组之间存在差异（p ＜0.001）。处理7天和14天后，显微硬度发生变化，处理28天后1周保持稳定。各组的矿物回收率和搪瓷形貌各不相同，其中氟化物清漆的形貌最均匀。

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