腐蚀引起的表面特性和牙线粗度的变化
Manuel Martin Adriazola Ique1, Mayra Fernanda Ferreira1, Alberto Carlos Botazzo Delbem1
1Department of Preventive and Restorative Dentistry, Dental School of Araçatuba, São Paulo State University, Araçatuba, São Paulo, Brazil.
概括
金属正牙线具有疏水性,TMA具有最少的反水性. 酸性溶液显著改变表面特性,特别是TMA,影响了牙矯正中的材料选择.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 表面化学 表面化学
背景情况:
- 金属合金在牙科中至关重要,但它们的表面性能可能会受到口腔环境的影响.
- 了解表面自由能量和表面粗度 (SR) 对于预测合金行为和生物相容性至关重要.
研究的目的:
- 为了研究酸性溶液对正牙金属合金表面自由能量和SR的影响.
- 为了比较不同合金类型和品牌对酸性环境的反应.
主要方法:
- 一项体外研究使用了270个电线样本 (0.019 × 0.025英寸). 来自三个品牌.
- 样品包括不钢,-和-合金 (TMA),浸泡在脱离离子水,酸或酸中72小时.
- 分析了表面自由能量和SR,数据在5%的显著性水平下接受ANOVA.
主要成果:
- 所有合金都表现出疏水性行为 (相互作用自由能量<0).
- 酸性溶液显著改变了各种品牌和合金的表面能量和相互作用自由能量.
- 和合金 (TMA) 的表面能量显著更高 (P<0.001),酸的表面性能变化最为显著.
结论:
- ортодонтика合金表现出疏水特性,而TMA是最不疏水的.
- 酸性条件,特别是酸,导致这些合金的表面发生显著的变化.
- 合金对酸性挑战的特定反应需要在正牙线的选择过程中仔细考虑.
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