| 固定桥基牙牙槽骨的光弹应力分析——垂直向加载 |
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| 引用本文： | 赵云凤,杜传诗,魏治统,许怡雄,杨光海,叶德临. 固定桥基牙牙槽骨的光弹应力分析——垂直向加载[J]. 四川大学学报(医学版), 1986, 0(1) |
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| 作者姓名： | 赵云凤 杜传诗 魏治统 许怡雄 杨光海 叶德临 |
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| 作者单位： | 华西医科大学口腔医学研究所(赵云凤，杜传诗，魏治统，许怡雄)，核工业部第九研究院四所(杨光海)，成都科技大学生物医学中心(叶德临) |
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| 摘 要： | 作者采用低弹性模量的环氧树脂材料模拟牙周膜,并改进了实验装置,使实验模拟更接近人体的实际情况。对垂直受载的两基牙固定桥和三基牙固定桥基牙牙槽骨的受力进行了分析,得到了定量分析的结果。
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| 关 键 词： | 光弹实验 固定桥 基牙牙槽骨 应力集中 |
PHOTOELASTIC ANALYSIS OF STRESS ON ALVEOLAR BONE OF ABUTMENT OF FIXED BRIDGE UNDER VERTICAL LOADING |
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| Zhao Yunfeng,Du Chuanshi,Wei Zhitong,Xu Yixiong,Yang Guanghai,Ye Delin Institute of Stomatology The Ninth Research Institute of Ministry cj Nuclear Industry Centre of Biomedical Ergineering of Chengdu University of Science and Technology. PHOTOELASTIC ANALYSIS OF STRESS ON ALVEOLAR BONE OF ABUTMENT OF FIXED BRIDGE UNDER VERTICAL LOADING[J]. Journal of Sichuan University. Medical science edition, 1986, 0(1) |
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| Authors: | Zhao Yunfeng Du Chuanshi Wei Zhitong Xu Yixiong Yang Guanghai Ye Delin Institute of Stomatology The Ninth Research Institute of Ministry cj Nuclear Industry Centre of Biomedical Ergineering of Chengdu University of Science Technology |
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| Affiliation: | Zhao Yunfeng;Du Chuanshi;Wei Zhitong;Xu Yixiong;Yang Guanghai;Ye Delin Institute of Stomatology The Ninth Research Institute of Ministry cj Nuclear Industry Centre of Biomedical Ergineering of Chengdu University of Science and Technology |
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| Abstract: | The fixed bridge is a prosthesis adoptedusually in oral cavity clinic. In order to de-sign an ideal fixed bridge which can servethe purpose of protecting abutment, we muststudy carefully the mechanical behaviourof the alveolar bone of abutment of thefixed bridge, especial1y pay full attentionto the state of stress concentration. Epoxy resin with a low modulus wasused to simulate the periodontal membrane,and the experment device was also im-proved. The simulated model was similar tooral cavity state of the human being. Aquantitative analysis was also made aboutthe stress on the alveolar bone of two-unitabutments and three-unit abutments of thefixed bridges when vertical force wasapplied. Conclusions: 1. When the alveolar bone of abutmentof the fixed bridge is under vertical loading.The primary bearing of the alveolar bone istensile stress. The stress concentration on themedial and distal marginal ridge of molar andpremolar is showed. 2. The compressive stress on the alveolarbone of abutment of the fixed bridge is lessthan tensile stress. 3. The stress concentration on the mar-ginal ridge of two-unit abutment of the fixedbridge is 70.14 kg/cm~2; but that of three-unit abutment is leduced to 26.39 kg/cm~2.So the three-unit abutment of the fixedbridge is a good design. |
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| Keywords: | Photoelastic experiment Fixed bridge Alveolar bone of abutment Stress concentration |
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