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《WEST CHINA JOURNAL FOF STOMATOLOGY》 1999-04
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Three dimensional Finite Element Analysis of Stress\;in Supporting Bone of Mandibular Posterior Fixed Bridge\;Ⅰ. Stress Analysis of the Surface\;of Alveolar Bone Around Bridge Abutments

Tang Liang\;Department of Stomatology, Medical College, Jinan University\;Chen Guangqian\;Guangzhou Institute of Geochemistry, Chinese Academy of Sciences\;  
Objective:Stress levels of the surface of alveolar bone around bridge abutment of posterior fixed bridge were studied. Methods:The three dimensional finite element model was developed on the basis of a try adult mandible. 6 vertical and 1 horizontal loadings were applied respectively, and the Maximum stress(ε\-\{max\}) and the Minimum stress(ε\-\{min\}) of the surface of alveolar bone around bridge abutment were calculated. Results:The stress concentration exhibited at the apical and cervical regions. The stress of the bicuspid was about 2.1 times as high as that of the molar. When transverse loading was applied, the stress level was about 3.5 times as high as that when vertical loading was applied. Conclusion:The results were greatly valuable to design of posterior fixed bridge.\;
【Fund】: 广东省卫生厅资助!项目 (编号 D42 40 0 )
【CateGory Index】: R318.01
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