商业上可用的正统牙科NiTi弧线的热编程
Andrea Wichelhaus1, Amelie Mehnert1, Thomas Stocker1
1Department of Orthodontics and Dentofacial Orthopaedics, University Hospital, LMU Munich, Goethe-Strasse 70, 80336 Munich, Germany.
Materials (Basel, Switzerland)
|May 27, 2023
概括
热处理可以调整- (NiTi) 弧线形状,但最佳的超弹性特性取决于特定的热处理参数. 了解这些线材特定的范围对于有效的正牙应用至关重要.
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
- 矯正牙科 矯正牙科是一種矯正牙科.
背景情况:
- 超弹性- (NiTi) 弧线在牙科中至关重要.
- 热处理可以改变NiTi弧线形状和机械性能.
- 优化热处理需要了解它们对超弹性的影响.
研究的目的:
- 为了研究热处理对NiTi弧线的机械性能的影响.
- 为了确定电线特定的最佳回火参数,以获得形状记忆和超弹性.
- 为了评估热调整后不同品牌的NiTi弧线的用户友好性.
主要方法:
- 模拟的热处理使用实验室炉在十四个商业NiTi弧线上.
- 不同的火时间 (1,5,10分钟) 和温度 (250-800°C).
- 使用角度测量和三点曲试验评估形状适应性和超弹性.
主要成果:
- 完整的形状适应发生在特定的温度范围内,根据火持续时间而异.
- 在更高的温度或更长的时间内观察到超弹性质的丧失.
- 定义了电线特定的工作范围,以便在不损害超弹性的情况下进行最佳的形状调整.
- 根据稳定的力和曲测试性能,确定了用户友好的线.
结论:
- 尼弧线的热形状调整是可行的,但需要精确的,电线特定的参数.
- 建立定义的工作范围对于保持超弹性行为和实现所需的临床结果至关重要.
- 几个NiTi弧线品牌在经过优化热处理后表现出卓越的性能和用户友好性.
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