不同的附着类型和位置对清晰对齐器处理中的旋转运动的影响:有限元分析
Erkan Sultanoğlu1, Hakan Gürcan Gürel1, Muzaffer Gülyurt1
1Orthodontics and Dentofacial Orthopedics, Biruni University, Istanbul, TUR.
Cureus
|September 6, 2024
概括
清晰对齐器附件显著影响下前旋转. 水平矩形连接器提供更好的牙运动和保留,尽管它们增加牙周带带应力.
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:
- 通过清晰的对齐器实现下前的精确旋转是一个临床挑战.
- 附件设计和放置对于有效的清晰对齐器治疗结果至关重要.
- 了解牙周带 (PDL) 中的应力分布对于预测治疗成功和患者舒适至关重要.
研究的目的:
- 为了比较各种清晰对齐器附件类型和位置的有效性,用于旋转下第一个前.
- 为了评估不同附件对在旋转过程中清晰对齐器保留的影响.
- 用有限元分析 (FEA) 分析牙周带 (PDL) 内的应力值,用于不同的附着配置.
主要方法:
- 开发了一种下牙模型,其中第一个前牙被旋转了30°.
- 创建了12个组,其中水平矩形,垂直矩形,圆形和半圆形的附件位于口腔,舌头和组合位置,以及一个对照组.
- 用有限元分析 (FEA) 评估0.25毫米激活后的清晰对齐器位移,PDL应力 (von Mises) 和牙位移.
主要成果:
- 水平矩形附着组 (口腔和舌头) 呈现出最高的PDL应力 (0.1971MPa) 和牙位移 (0.1267毫米).
- 在口腔和舌头上放置的半圆形附件导致了最不清晰的对齐器位移 (0.1441毫米).
- 所有被测试的依恋组都表现出与没有依恋的对照组相比,更高的依恋保留能力.
结论:
- 附件增强了清晰的对齐器保留用于旋转下前.
- 水平矩形附件虽然有效地促进运动,但会导致更高的应力和位移.
- 结合口腔和舌腔水平矩形附件被推用于临床应用在旋转下第一个前由于它们在牙运动中的有效性.
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