压力分布在各种尺寸的有限元分析 内部根的吸收空腔填充不同的材料
1Department of Endodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
概括
牙中的内部再吸收腔增加了压力,但用Biodentine或MTA治疗可以减少牙和骨的压力. 然而,生物牙将压力集中在材料本身.
科学领域:
- 生物材料科学 生物材料科学
- 牙科机械 牙科机械
- 牙周内科医院 牙周内科医院 牙周内科医院
背景情况:
- 内部再吸收是一种影响牙的病理过程.
- 为了有效地管理内部再吸收,需要了解应力分布.
- 修复材料如gutta-percha,MTA和Biodentine具有不同的机械性能.
研究的目的:
- 为了研究具有内部再吸收腔的模拟牙中的应力分布.
- 为了比较gutta-percha,MTA和Biodentine作为堵塞材料的影响.
- 分析吸收腔大小如何影响压力模式.
主要方法:
- 人类牙的3D有限元模型的开发.
- 模拟不同大小的内部再吸收腔.
- 用Gutta-percha,MTA或Biodentine恢复空洞的方法.
- 在135°的角度施加100N的力来分析应力分布.
主要成果:
- 压力随着内部再吸收腔的大小而增加.
- 所有测试的修复材料与未经处理的再吸收相比,都减少了压力.
- 生物牙和MTA对牙和骨的压力比gutta-percha传递的压力要小.
- 生物牙在材料中表现出更高的内部应力积累.
结论:
- 对内部再吸收腔的治疗有效地减少了对牙结构的压力.
- 生物牙和MTA提供优越的应力分布,牙和骨相比,肠-percha.
- 材料选择至关重要,考虑到修复材料本身的潜在压力积累.
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