在牙周分解期间增加对皮层和椎骨的正牙力的影响-有限元素分析
Radu-Andrei Moga1, Cristian Doru Olteanu2, Mircea Daniel Botez3
1Department of Cariology, Endodontics and Oral Pathology, School of Dental Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, Str. Motilor 33, 400001 Cluj-Napoca, Romania.
Medicina (Kaunas, Lithuania)
|November 25, 2023
概括
在牙周病变期间,正牙力增加了下骨的压力. 旋转,转移和倾斜运动带来了最高的风险,增加的力显著增加了压力和潜在的骨损失.
科学领域:
- 生物机械工程 生物机械工程
- 牙科机械 牙科机械
- 矯正牙科 矯正牙科是一種矯正牙科.
背景情况:
- 牙周病变损害了下骨支.
- 了解生物力学对正牙力量的反应对于预防并发症至关重要.
研究的目的:
- 在牙周病变期间在不同的正牙负荷下对下骨生物力学进行数值分析.
- 评估与不同的正牙运动和力水平相关的缺血和吸收风险.
主要方法:
- 81个模型 (9名患者) 的有限元分析 (FEA),243次模拟.
- 在0.6N,1.2N和2.4N负荷下研究了入,挤出,旋转,倾斜和翻译.
- 使用特雷斯卡故障标准来评估应力分布和故障风险.
主要成果:
- 在4毫米骨损失后,入和挤出显示出顶/中三度的压力增加,特别是在0.6N时.
- 旋转,转移和倾斜产生了最大的压力,特别是在宫三分之一,在0.6N的4毫米骨损失后,风险增加.
- 与0.6N相比,压力水平在1.2N时翻了一番,在2.4N时翻了四倍,压力模式类似,但幅度增加.
结论:
- 旋转,转移和倾斜是最紧张的正牙运动.
- 建议在骨损失4毫米后将正牙力降低到0.6N以下,以减轻缺血和吸收风险.
- 在FEA模拟中,压力模式与水平牙周损伤相关联,这凸显了力量管理的重要性.
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