上部切口扭矩运动与清晰的对齐器:一个三维的有限元素分析
Xin Yue Tang1, Lei Zhang2, Ting Jiang1
1Department of Orthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai, China; National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, China.
Journal of the World federation of orthodontists
|May 29, 2025
概括
清晰对齐器疗法 (CAT) 与切口扭矩作斗争. 延长的修剪线和将旋转中心 (COR) 远离切口边缘,在清晰的对齐器治疗中提高了口腔根扭矩的可预测性.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物材料工程 生物材料工程
- 牙科机械 牙科机械
背景情况:
- 扭矩运动是清晰对齐器疗法 (CAT) 的一个重大挑战.
- 了解切口扭矩机制对于提高CAT功效至关重要.
研究的目的:
- 在不同的对齐器修剪线设计下分析切割刀扭矩运动.
- 通过3D有限元分析,研究剪裁线形态对扭矩控制的影响.
主要方法:
- 从CBCT数据创建了一个成人大牙的3D有限元模型.
- 模拟了清晰对齐器疗法 (CAT) 模型,模拟了皮,直线和延长的修剪线.
- 从切口边 (0-5毫米) 开始,从切口边 (0-5毫米) 开始,对具有不同旋转中心 (COR) 的切口器施加了面部根扭矩.
主要成果:
- 切口器在 COR 处于切口边缘时显示出不受控制的 palatal 倾斜.
- 延长的修剪线产生了更多的唇部-宫应力和更少的根部位移.
- 将COR从切口边缘移开,将运动从倾斜转移到控制的 palatal 根扭矩.
结论:
- 延长的修剪线是有益的,但不足以实现可预测的口腔根扭矩在CAT.
- 在设置中优化旋转中心 (COR) 对于可预测的切刀扭矩运动至关重要.
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