测量大后牙移动:使用和牙叠加的模型评估
Abdulraheem A Alwafi1, Scott Panther2, Angela Lo2
1Department of Dental Public Health, Faculty of Dentistry, King Abdulaziz University; Department of Oral Health Science, Faculty of Dentistry, University of British Columbia.
Journal of visualized experiments : JoVE
|March 11, 2024
概括
这项研究评估了Invisalign对尾后牙移动的精度. 清晰对齐器准确地预测了大多数线性运动和距离距离倾斜,但在旋转和扭矩控制方面显示出较少的可预测性.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 牙科技术 牙科技术
背景情况:
- 与固定设备相比,Invisalign (清晰对齐器) 疗法提出了关于其精度的问题.
- 准确的评估对于前后,垂直和横向校正至关重要.
研究的目的:
- 评估Invisalign清晰对齐器治疗在预测大后牙移动方面的精度.
- 用数字叠加协议将已实现的牙位置与预测的位置进行比较.
主要方法:
- 开发了一种数字叠加大模型 (治疗前,治疗后,ClinCheck-初始,最终) 的协议.
- 用了 palatal rugae 和牙作为叠加的稳定参考.
- 使用转换矩阵和统计测试分析了线性位移 (±0.25毫米) 和旋转 (±2°) 的差异.
主要成果:
- 在旋转 (2.036° ± 4.217°) 和扭矩 (-2.913° ± 3.263°) 中发现了统计和临床显著的差异.
- 前牙的脱旋转和后牙的扭矩控制不那么可预测.
- 线性测量显示了微不足道的差异,除了第一牙的轻微侵入 (0.256毫米).
结论:
- 在非提取的情况下,Invisalign似乎符合大多数翻译运动和尾后牙的 mesial-distal 倾斜的预测.
- 在这些情况下,旋转和扭矩控制对清晰的对齐器可预测性提出了挑战.
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