眶部种植体过盈量对骨界面应力的影响  

The effects of orbital implant shrink range on the stress distributions in bone-implant interface

作　　者：张兴[1] 陈松龄[2] 张云[3] 黄代营[2] 

机构地区：[1]广东省中医院口腔科,广州510120 [2]中山大学附属第一医院口腔科 [3]台州市第一人民医院消化内科

出　　处：《实用口腔医学杂志》2014年第4期535-537,共3页Journal of Practical Stomatology

基　　金：广东省科技厅社会发展项目(编号:2010B0609-00070);广东省科技厅高新技术产业化项目(编号:2011B010200008)

摘　　要：目的:探讨不同过盈量的眶部种植体对骨界面应力分布的影响。方法:建立4种规格种植体过盈量分别为0.05、0.1、0.15 mm的眶部种植体-颅颌面骨三维有限元模型,计算并分析不同情况下的应力分布。结果:骨界面应力随着过盈量增大而增大,但在0.15 mm过盈量时,骨界面应力降低。10 mm种植体在0.1 mm及0.15 mm过盈量条件下界面应力值明显低于其他规格种植体。结论:0.1 mm过盈量符合临床要求,在眶部种植手术设计时因考虑长度和过盈量的影响。Objective：To observe the effect of orbital implant shrink range on the stress distribution in bone-implant interface. Methods：The 3D finite element analysis of craniofacial and orbital implant models with the implant length of 3,4,6 and 10 mm,and with the shrink range of0.05,0.1 and 0.15 mm were established respectively.The stress in the bone-implant interface were calculat-ed and analyzed.Results：The stress increased with the increase of implant shrink range.The stress produced by the implant with 0.15 mm shrink range decreased.The stress of the implant of 10 mm was lower than that of other implants with the shrink range of 0.1 and 0.15 mm.Conclusion：The maximal implant shrink range of 0.1 mm in the model can meet the clinical requirements in orbital implant planning.

关 键 词：眶部种植体 应力分布 三维有限元 过盈量 

分 类 号：R779.6[医药卫生—眼科]