完全固定桥、半固定桥的三维光弹法应力分析  

Three-dimensional photoelastic streu analysis on the rigidly fixed bridge and the broken-stress fixed bridge

作　　者：汪厚希[1] 李曙晖[1] 李鹏程[2] 毕谦[2] 

机构地区：[1]昆明医学院口腔系 [2]昆明工学院建力系

出　　处：《口腔医学纵横》1993年第2期109-112,共4页Journal of Comprehensive Stomatology

摘　　要：本研究运用三维光弹测试法分析完全固定桥和半固定桥。研究基牙支持骨组织各测试点的应力情况,求出根尖和牙嵴顶处的主应力大小,由此推算出半固定桥和完全固定桥的桥体中央所能承受的极限(牙合)力。并发现半固定桥活动关节端受力后的弯距不等于零,并无“应力中断”作用。This article used three-dimensional photoclastic method to study stress on supporting pcriodonuum of abutment teeth of rigidly fixed bridge and broken stress bridge. In this study, major stress on apices and alveolar crests had been found. Furthermore, extreme occlusal forces in the centre of bridges had bccn calculated. In this study, bending moment of the removable joint in the end of broken strcss bridge had been found. So broken stress bridgc cannot break stress.

关 键 词：三维光弹测试 完全固定桥 半固定桥 

分 类 号：R783.3[医药卫生—口腔医学]