第二类弹性的影响压力分布在不同的面部生长模式的压力分布
Priyanka Roy1, Chander Gowda Nishita1
1Department of Orthodontics, V.S. Dental Collage, Bangalore, India.
Orthodontics & craniofacial research
|October 6, 2025
概括
ортодонтикаII类弹性带导致更大的关节 (TMJ) 压力在垂直种植者比水平种植者. 谨慎的弹性放置对于保持不同面部类型的口腔-面部平衡和闭合和至关重要.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物机械分析分析
- 头骨面部形态学 头骨面部形态学
背景情况:
- 了解 ортодонтической弹性在关节 (TMJ) 的生物力学影响对于有效的治疗规划至关重要.
- 面部生长模式,特别是水平和垂直的,可以影响对正力的反应.
研究的目的:
- 分析上关综合体的移位和TMJ内的应力分布.
- 为了比较水平和垂直面部生长模式中的这些效应,使用II类弹性引.
- 为了评估不同的弹性配置,从较低的第一个/第二个牙到上方的狗.
主要方法:
- 采用有限元法 (FEM) 分析,使用来自两个代表水平和垂直面部类型的个体的圆束计算机断层扫描 (CBCT) 数据.
- 创建了四个具有不同弹性配置的模型,并对其进行了模拟的正力 (200g).
- 计算了应力和变形,特别注意状头部和关节盘的应力值.
主要成果:
- 在水平面部模型 (0.30毫米) 中,大巴部位位移较大,从大巴部到下第二牙的弹性.
- 在垂直面部模型中发生了最小的位移 (0.24毫米),该面部模型具有从上犬骨到下第一个骨的弹性.
- 与水平模型相比,垂直面部模型在状和犬体上表现出更高的最大主应力.
结论:
- 与水平种植者相比,垂直种植者在II类弹性引下经历了更大的关节应力.
- 应特别注意上犬和下第二牙之间的弹性,以避免破坏闭塞和和肌肉平衡.
- 在多种不同的面部图案中应用正牙弹性时,生物力学考虑是至关重要的.
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