无牙颌一侧上颌骨缺损种植修复设计的准三维光弹应力分析(Ⅰ)─—种植体数目和植入部位对赝复体支持组织应力分布的影响  

Study on the design of the implant prosthesis in the edentulous unilateral maxillary defect──A quasi three dimensional photoelastic analysis(Ⅰ) Influence of the implant number and the implanted position on the stress distribution to the suppo

作　　者：王晓玲[1] 赵铱民[2] 张铁[2] 伊元夫[2] 

机构地区：[1]北京武警部队总医院口腔科,100039 [2]第四军医大学口腔医学院修复科

出　　处：《实用口腔医学杂志》2000年第4期314-316,共3页Journal of Practical Stomatology

摘　　要：目的：了解种植体数目和植入部位对赝复体支持组织应力分布的影响。方法；采用三维光弹应力冻结切片法，对应用种植杆卡式赝复体修复无牙颌一侧上颌骨缺损的不同种植体数目（２、４或６个）和不同种植部位在垂直载荷下的应力进行冻结，并在相应部位切片观察。结果：发现腭部、牙槽骨、种植体周围骨界面的应力值与种植体的数目呈负相关。结论：对此类缺损的修复，应在切牙区、尖牙区、前磨牙区、磨牙区植入４只种植体为宜。To investigate the influence of implant number and implanted position on the stress distribution to the supporting tissue. Methods: Bar attachment prosthesis, supported by 2,4 or 6 implants in various position, were designed in the edentulous unilateral maxillary defect. Three-dimensional photoelastic frozen section method was used to freeze the stress-situation of the prosthesis vertical loads. Slices from corresponding areas were made to investigate the stress distribution of the prosthesis. Results: The stress in palatal area, alveolar bone and implant-bone interface decreased when the number of implant increased. The stress distribution was dicreasing by following: in bone-implant interface>in alveolar bone >in palate and in 1> in 3>in 5>in 7. Conclusion: Four implants should be used in incisor area, canine area, premolar area and molar area respectively for the implant prosthesis in the edentulous unilateral maxillary defect.

关 键 词：种植体 应力分析 光弹性实验 上颌骨缺损 修复 

分 类 号：R783[医药卫生—口腔医学]