Finite element analysis of fiber-reinforced fixed partial dentures
Finite element analysis of fiber-reinforced fixed partial dentures
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DOI：
10.4012/dmj.24.275
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发表时间：
2005-06-01
影响因子：
2.5
通讯作者：
Yatani, H
中科院分区：
文献类型：
--
作者：
Nakamura, T;Ohyama, T;Yatani, H
建立三维有限元模型，对三单元后牙固定义齿进行有限元分析。实验树脂浸渍玻璃纤维被用作纤维增强复合材料（FRC）的框架。使用不同的位置和厚度的组合，以及两种类型的贴面复合材料的FRC进行了评估。在桥体上垂直方向施加50 N模拟咬合力的载荷。使用有限元分析程序检查拉伸应力。没有FRC的模型显示桥体颈侧的贴面复合材料内的拉伸应力集中-从连接器区域到桥体底部。在桥体顶部有FRC的模型与无FRC的模型的应力分布几乎相同。模型与0.4-0.8毫米厚的FRC定位在桥体的底部显示最大的拉伸应力减少了4-19%的贴面复合材料。
Two-dimensional finite element models were created for a three-unit posterior fixed partial denture. An experimental resin-impregnated glass fiber was used as the fiber-reinforced composite (FRC) for the framework. The FRC was evaluated using varying combinations of position and thickness, alongside with two types of veneering composite. A load of 50 N simulating bite force was applied at the pontic in a vertical direction. Tensile stress was examined using a finite element analysis program.Model without FRC showed tensile stress concentrations within the veneering composite on the cervical side of the pontic - from the connector area to the bottom of the pontic. Model with FRC at the top of the pontic had almost the same stress distribution as the model without FRC. Models with 0.4-0.8 mm thick FRC positioned at the bottom of the pontic showed maximum tensile stresses reduced by 4-19% within the veneering composite.