在植入物上的固定部分假牙基础设施中,根据其假肢材料的变化,开发出·米塞斯等效应力
Marcelo Bighetti Toniollo1, Kalyta Esteves Martins Dos Reis2, Silvio Pedro da Silva Sakamoto3
1Dental School of Rio Verde - University of Rio Verde (FORV/UniRV) Fazenda Fontes do Saber, Setor Universitário, Rio Verde - GO Phone: +55 16-99709-6643
The Journal of oral implantology
|March 17, 2025
概括
牙假肢材料会影响应力分布. 像Cobalt-Chrome和Zirconia这样的更硬的材料经历了更高的应力,而烯酸树脂接近其曲极限,表明牙科植入物中潜在的生物力学问题.
科学领域:
- 生物材料科学 生物材料科学
- 牙科 牙修复 牙科 牙修复 牙修复
- 机械工程 机械工程
背景情况:
- 植入物上带有pontic元素的固定部分假肢为有限的骨结构提供了具有成本效益的解决方案.
- 假肢基础设施中的材料变化可以影响生物力学需求和压力发展.
研究的目的:
- 为了比较各种假肢基础设施材料中的·米塞斯等效应力 (VMES).
- 分析植入式假肢中材料刚性和应力产生之间的关系.
主要方法:
- 使用Ansys工作台软件进行有限元法 (FEM) 分析.
- 在- (CoCr),- (NiCr), (Ti), (Zr),二氧化 (LD),金 (Au) 和烯酸树脂 (AR) 基础设施中对VMES的定量和定性评估.
主要成果:
- 在测试材料中观察到不同的应力水平.
- 材料硬度和产生的应力之间存在直接的相关性;更高的硬度导致更高的应力.
- 与其他材料不同的是,烯酸树脂呈现的应力水平接近其最大屈曲阻力.
结论:
- 材料选择显著影响植入式固定部分假肢的应力分布.
- 虽然大多数材料表现出可接受的生物力学性能,但由于其应力值,烯酸树脂需要仔细考虑.
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