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陶贴面石牙冠的功能分级双材料接口:使用粘弹性有限元素分析的研究

Rupesh Shrestha¹, Niyati Reddy², Steven Fredeen²

¹Department of Civil and Environmental Engineering, University of Connecticut, Storrs, CT 06269, USA.

Dental materials : official publication of the Academy of Dental Materials

|June 14, 2024

概括

引入一个功能分级材料 (FGM) 层在陶贴面 (PVZ) 牙冠减少热应力. 这种FGM层通过减轻压力度和改善寿命来增强PVZ冠状的耐用性.

科学领域:

生物材料科学生物材料科学
牙科材料工程牙科材料工程
计算力学计算力学计算力学

背景情况:

嵌皮 (PVZ) 牙冠容易发生裂纹和断裂,原因是制造过程中材料属性不匹配引起的热应力.
这些应力在高温烧火后的冷却过程中形成,从而削弱了板-核心接口.

研究的目的:

为了研究在PVZ皇冠中在-接口上加入一个功能分级材料 (FGM) 层的有效性.
分析FGM层对短暂和残余热应力的影响.

主要方法:

在解剖学上正确的3DPVZ冠状模型的开发,有或没有FGM层.
一种粘弹性有限元模型的验证,用于预测双层和含FGM的PVZ冠中的应力.
分析FGM层内和界面上的压力再分配和度.

主要成果:

与传统的双层PVZ冠相比,FGM层显著降低了短暂和残留的热应力.
FGM 层促进了应力再分配,减轻了-的界面上的应力度.
这种应力减轻有潜力提高PVZ冠的耐用性和抗破裂性.

结论:

整合FGM层是一种有前途的策略,可以提高PVZ牙修复的寿命.
通过FGM应用来缓解突然的热性质差异和放松热应力,提高了皇冠的耐用性.

关键词:

具有功能分级的材料具有功能分级的材料器面皮尔科尼亚王冠剩余的压力造成的压力.暂时的压力是暂时的.粘弹性有限元素分析

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