Annikaer·ANNIWAER,Aizimaitijiang·SAIYITI,Adili·MAIMUTIMIN,Palidaimu·TUERDI,Nijiati·TUERXUN,WANG Wei.Three-Dimensional Finite Element Analysis on Different Implant Prostheses for Labial Bone Graft[J].Journal of medical biomechanics,2020,35(4):304-310
唇侧植骨不同种植修复体的三维有限元分析
Three-Dimensional Finite Element Analysis on Different Implant Prostheses for Labial Bone Graft
Received:September 08, 2019  Revised:October 11, 2019
DOI:
Chinese key words:  种植修复体  植骨  咬合力  组织工程
English Key words:implant prosthesis  bone graft  bite force  tissue engineering
Fund project:新疆维吾尔自治区自然科学基金项目(2016D01C192)
Author NameAffiliation
Annikaer·ANNIWAER Department of Stomatology, the Second Affiliated Hospital of Xinjiang Medical University 
Aizimaitijiang·SAIYITI Department of Stomatology, the Second Affiliated Hospital of Xinjiang Medical University 
Adili·MAIMUTIMIN Department of Stomatology, the Second Affiliated Hospital of Xinjiang Medical University 
Palidaimu·TUERDI Department of Stomatology, the Second Affiliated Hospital of Xinjiang Medical University 
Nijiati·TUERXUN Department of Stomatology, the Second Affiliated Hospital of Xinjiang Medical University 
WANG Wei Urumqi Da-Wei Innovative Information Technology Co., Ltd. 
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Chinese abstract:
      目的 分析植骨和修复体对种植修复体内部结构及周围骨组织应力分布的影响。方法建立由两种唇侧骨质牙槽骨模型支持且分别为钴铬合金烤瓷冠与二氧化锆全瓷冠修复的上颌中切牙种植修复体模型,对其进行力学加载,分析植骨与修复体对植体内部各结构与植体-骨界面应力分布的影响。结果 植骨组中固位螺丝唇侧体部处及种植体唇侧骨组织中应力远低于非植骨组,但植骨组种植体颈部处的应力则高于非植骨组。相同骨质条件下,二氧化锆全瓷冠组在固位螺丝唇侧体部处的应力大于钴铬合金烤瓷冠组。结论 修复体对种植修复体内部结构及周围骨组织应力分布的影响不大,但植骨影响的唇侧骨质差异可影响固位螺丝体部及植体-骨界面处的应力集中状况。
English abstract:
      Objective To analyze the influence of bone graft and prosthesis on stress distributions in internal structure and surrounding bone tissues of implant prosthesis. Methods Two models of maxillary central incisor implants supported by two kinds of labial alveolar bone models were established, which were restored by porcelain fused metal (PFM) crown and zirconia all-ceramic crown, respectively. The mechanical loads were applied to analyze the influence of bone graft and two different prostheses on stress distributions of internal structure of the implant and interface between the implant and bone. Results In bone graft group, the stress in labial part of the retaining screw and labial bone tissues of the implant was much lower than that in non-bone graft group, but the stress of the implant neck was higher in bone graft group than that in non-bone graft group. Under the same bone condition, the stress of zirconia all-ceramic crown group on lip side of the retaining screw was greater than that of PFM crown group. Conclusions Prosthesis have little effect on stress distributions of internal structure and surrounding bone tissues of implant prosthesis, but the difference of labial bone affected by bone grafts can affect stress concentrations of the retaining screw and the implant-bone interface.
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