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用有限元法对各种假牙闭合方案的再吸收脊梁进行与疼痛相关的分析

David Fatola¹, Ismet Danial Nasution¹, Muhammad Sabri²

¹. Department of Prosthodontics, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia.

Brazilian dental journal

|July 24, 2024

概括

对于再吸收的膜脊,语言化闭塞方案 (LO) 是理想的. 它最大限度地减少了压力超过压力-疼痛值 (PPT) 在斜负荷下,与双边平衡 (BBO) 或单飞机 (MO) 方案不同,确保更好的舒适性和功能.

科学领域:

生物材料科学生物材料科学
牙科机械牙科机械
生物力学生物力学

背景情况:

在下中重新吸收的膜脊,由于有限的支区域,对假牙的稳定性和舒适性提出了挑战.
负荷分布可以超过压力疼痛值 (PPT),导致粘膜疼痛和进一步的脊再吸收.

研究的目的:

为了比较三种闭塞模式的应力分布:双边平衡 (BBO),语言化 (LO) 和单平面 (MO) 在再吸收的膜脊.
为了确定最适合的闭合方案的患者下脊解剖损害下.

主要方法:

用有限元法 (FEM) 分析在模拟的再吸收的气泡脊上进行了分析.
三维模型模拟了在轴向 (100N) 和斜负荷下 (119N为BBO,106N为LO) 具有BBO,LO和MO封闭方案的假牙.
·米塞斯应力计算在九个假牙支区域,并与PPT (0.64925MPa) 相比.

主要成果:

在轴负荷下,所有方案都低于PPT,在BBO (0.43229MPa),LO (0.39715MPa) 和MO (0.31576MPa) 的H区域观察到的最大应力.
在斜负荷下,BBO在E (0.80778MPa) 和H (0.76256MPa) 区域超过了PPT.
在区域E (0.64394 MPa) 中,LO超过了PPT,但与BBO相比,高压力区域较少.

结论:

语言化闭塞方案 (LO) 推用于再吸收大气泡脊的患者.
LO有效地限制了闭塞干扰,保持了患者的舒适性,并提供了令人满意的性能和美学.
该方案提供了一种卓越的生物力学解决方案,用于管理在假牙轴承区域受损的应力分布.

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