Photoeiastic-Stress Analysis of The Effect of Various Clasps on An Abutment Tooth  

作　　者：姚月玲 汪文骏 周敬行 

机构地区：[1]Department of Prosthodontics,Qindu Stomatological Hospital,Fourth Military Medical University,Xi'an.710033

出　　处：《Journal of Medical Colleges of PLA(China)》1989年第4期320-322,386,共4页中国人民解放军军医大学学报（英文版）

摘　　要：It is reported in this article that the mandibular unilateral distal-extension remova-ble partial dentures with wrvught wtre retentive clasp arm,cast circumferential retentive arm andI-bar retentive arm were tested under vertical loading,and the stresses around the root of thetooth adjacent to the extension base were ovserved by means of photoeiastic stress analysis.The results showed that the retentive clasp arm or reciprocal clasp arm in distal-extension remov-able partial denture does not affect the magnitude and direction of the abutment tooth force,that there is no obvious difference among the wrought wire clasp arm,cast circumferential clasparm and I-bar clasp on the abutment tooth force,and that the force created due to loading of re-movable partial denture is transmitted to the primary abutment tooth mainly through theocclusal rest.It is reported in this article that the mandibular unilateral distal-extension remova- ble partial dentures with wrvught wtre retentive clasp arm,cast circumferential retentive arm and I-bar retentive arm were tested under vertical loading,and the stresses around the root of the tooth adjacent to the extension base were ovserved by means of photoeiastic stress analysis. The results showed that the retentive clasp arm or reciprocal clasp arm in distal-extension remov- able partial denture does not affect the magnitude and direction of the abutment tooth force, that there is no obvious difference among the wrought wire clasp arm,cast circumferential clasp arm and I-bar clasp on the abutment tooth force,and that the force created due to loading of re- movable partial denture is transmitted to the primary abutment tooth mainly through the occlusal rest.

关 键 词：reientive CLASP arm cental STRESS ANALYSIS photoelastic STRESS ANALYSIS 

分 类 号：R[医药卫生]