钴铬合金和钛基台与全瓷冠间粘接界面的三维有限元应力分析

Objective By comparing the observed cobalt-chromium alloy and titanium abutment abutment supported all-ceramic crowns with three kinds of composite resin bonding between the interface stress distribution to the difference between cobalt-chromium alloy to observe the characteristics of base stations. Methods Mandibular first molar implants local structure of three-dimensional finite element model to simulate the maximum bite force at the crown teeth occlusal surface horizontal and vertical force loading. Results Cobalt-chromium alloy on bonding interface of base stations was less than the stress of titanium abutment interface and a more uniform stress distribution in the region wide, cobalt-chromium alloy with titanium bonding interface of base stations as base stations, the horizontal loading force much larger than the maximum vertical load and, stress concentration, mainly in the neck and base stations and the crown implant junction. Cobalt-chromium alloy on bonding interface of base stations, the maximum stress concentration than the titanium abutment interface was smalland wide distribution. Conclusion Cobalt-chromium alloy bond stress distribution of base stations is better than titanium abutment interface. Cobalt-chromium alloy on bonding interface of base stations is relatively more resistant titanium abutment fracture. Cobalt-chromium alloy on bonding interface of base stations, base station interface with titanium as similar to the stress distribution. In clinical applications, cobalt-chromium alloy is a titanium abutment of base stations a useful complement.