【摘要】 本文的目的是对完全固定桥与半固定桥的运动及其受力状态进行试验性研究,以便进一步搞清二种固定桥的性质。为了使试验条件更接近临床真实情况,采用了激光全息干涉术对两种不同的固定桥进行测试。更多还原

【Abstract】 <ABSTRACT>The Purpose of this analysis is to compare the force distribution of twodifferent linds of fixed bridges with double-exposure laser holographic inter-ferometry to analyse the force distribution on The surface of The supportingbone of the abutment teeth.The rigid and nonrigid fixed bridges were made for a human mandible.A vertical force (6-7 kg ) was applied in the center of the pontic and theholograms were taken.The results showed that there was no significant difference between bothkinds of bridges in their bone supporting function when vertical force was a-pplied.The hologram also indicated that the abutment tooth with little suppor-ting tissue will bave larger displacement than that with more supporting tis-sue.更多还原