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使用微型CT进行3D打印与热成型透明对齐器的适应性分析,用于唇部牙的移动:一项体外研究
Sun Young Lim1, Sung-Hwan Choi2, Hyung-Seog Yu2
1Department of Orthodontics, Yonsei University College of Dentistry, Seoul, Korea.
Scientific reports
|February 9, 2026
概括
3D打印的透明对齐器显示出比热成型型型号更大的差距,无论牙的移动情况如何. 热成型对齐器 热成型对齐器
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物材料科学 生物材料科学
- 牙科技术 牙科技术
背景情况:
- 清晰对齐器 (CA) 是广泛用于正牙科的牙对齐.
- 评估CA的合适性,特别是在模拟牙运动下,对于治疗疗效至关重要.
- 3D打印和热成型的CA代表了不同的制造方法,具有潜在不同的适合性.
研究的目的:
- 为了比较3D打印透明调整器 (3DP) 与两种热成型透明调整器 (TM和TS) 的边缘和整体适应性.
- 为了评估中心切口的模拟唇部位移如何影响这些不同的CA类型的适合.
- 在被动和主动条件下分析透明对齐器的物质依赖性适应行为.
主要方法:
- 测试了三种透明对齐器材料组:3D打印 (TC-85树脂),热成型多层 (聚-弹性聚合物) 和热成型单层 (聚乙烯四甲基醇).
- 使用了带有唇部位移 (0.3毫米和0.5毫米) 的激活牙模型和被动模型.
- 微型计算机断层扫描 (micro-CT) 用于扫描安装在模型上的清晰对齐器,并在各个点测量了间隙宽度.
主要成果:
- 与两个热成型组相比,3D打印的透明对齐器的整体间隙宽度显著更大 (p < 0.001).
- 激活级别没有显著影响3D打印对齐器的适合性 (p = 0.350).
- 两个热成型组的间隙宽度随着牙激活的增加显著增加 (p < 0.001),这表明材料依赖的适应.
结论:
- 与热成型对齐器相比,3D打印的透明对齐器在接受模拟牙运动时显示出较少的适应性.
- 热成型透明对齐器,无论是多层还是单层,更好地适应轻微的牙位移.
- 适合差异因牙位置和测量点而异,凸显了清晰对齐器治疗中材料选择和制造方法的重要性.
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