下第一个的机械阻力在不同的内牙接入腔设计的影响下:一个3D有限元素分析研究研究
Burçin Arıcan1, Mustafa Gündoğar2, Gülşah Uslu3
1Department of Endodontics, School of Dental Medicine, Bahçeşehir University, Istanbul, Türkiye.
Computer methods in biomechanics and biomedical engineering
|January 30, 2025
概括
分析了不同的下牙进入腔设计的生物力学特性. 牙驱动的接入腔显示了最高的应力,表明牙损伤的可能性与扩大的开口.
科学领域:
- 生物材料和生物力学
- 牙科机械 牙科机械
- 在牙科领域的有限元分析.
背景情况:
- 了解下牙的生物机械行为对于恢复性牙科至关重要.
- 不同的接入腔设计旨在平衡有效的治疗与最小的牙结构去除.
- 之前的研究还没有全面比较新型和传统接入腔设计的生物力学影响.
研究的目的:
- 用七种不同的腔设计来比较下第一个的生物力学特性.
- 评估每个腔设计的不同负载条件下的应力分布.
- 识别腔室设计,尽量减少应力度,提高牙的结构完整性.
主要方法:
- 用有限元素 (FE) 分析来建模下第一个.
- 模拟了七种不同的空洞设计:传统的入口空洞 (TEC-I和TEC-II),忍者入口空洞 (NEC),保守的入口空洞 (CEC),托架入口空洞 (Tr-EC),虫驱动的入口空洞 (Cd-EC) 和虫驱动的托架入口空洞 (Cd-TrEC).
- 模型接受了三个不同的负载场景来评估应力分布.
主要成果:
- 观察到的最大应力分布是在虫驱动的接入腔 (Cd-EC) 设计的面膜表面和传统接入腔II型 (TEC-II) 的牙表面.
- 在各种设计中,压力主要集中在语言根表面和围区域.
- 扩大接入腔的尺寸显著增加了面和牙表面的应力分布.
结论:
- 腐烂驱动的接入腔 (Cd-EC) 设计显示了最高的应力度,这表明生物机械故障的风险更高.
- 传统的入口腔II型 (TEC-II) 也对牙表面造成了显著的压力.
- 尽量减少接入腔扩大对于保存牙结构和减少下牙中压力度至关重要.
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