| 眶部骨密度对种植体－骨界面应力影响的三维有限元研究 |
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| 引用本文： | 张兴,刘英,陈松龄,张云,陈建灵.眶部骨密度对种植体－骨界面应力影响的三维有限元研究[J].实用口腔医学杂志,2016(4):501-505. |
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| 作者姓名： | 张兴 刘英 陈松龄 张云 陈建灵 |
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| 作者单位： | 1. 广东省中医院口腔科, 广州,510120;2. 中山大学第一附属医院口腔科;3. 台州市第一人民医院消化内科 |
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| 基金项目： | 2013年国家自然基金面上项目(编号:81371111);2010年广东省科技厅社会发展项目(编号:2010B060900070);2011年广东省科技厅高新技术产业化项目(编号:2011B010200008) |
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| 摘 要： | 目的：探讨眶部受植区不同骨密度对种植体骨界面应力分布的影响。方法：建立8个不同 HU 值（300～10000）骨密度的眶部种植体－颅颌面骨三维有限元模型，给予沿种植体轴向20 N 的载荷，记录 Von-Mises 应力峰值和位移峰值，分析其应力分布。结果：随着骨密度值增高，应力峰值和位移峰值均出现下降，在800～1000 HU 条件下，应力峰值和位移峰值下降不明显。结论：眶部受植区骨密度小于800 HU 时，骨密度对种植体的成功率有直接影响。
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| 关 键 词： | 眶部种植体 应力分布 三维有限元 骨密度 |
The effects of orbital bone density on the stress distribution of implant-bone surface:A 3D finite element study |
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| ZHANG Xing;LIU Ying;CHEN Songling;ZHANG Yun;CHEN Jianling.The effects of orbital bone density on the stress distribution of implant-bone surface:A 3D finite element study[J].Journal of Practical Stomatology,2016(4):501-505. |
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| Authors: | ZHANG Xing;LIU Ying;CHEN Songling;ZHANG Yun;CHEN Jianling |
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| Institution: | ZHANG Xing;LIU Ying;CHEN Songling;ZHANG Yun;CHEN Jianling;Department of Stomatology,Guangdong Provincial Hospital of Traditional Chinese Medicine;Department of Stomatology,The First Affiliated Hospital,SUN Yat-sen University;Department of Gastroenterology,The First Hospital,Taizhou; |
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| Abstract: | Objective:To observe the effects of orbital bone density on the stress distribution of implant-bone surface.Methods:The 3D finite element analysis craniofacial model with eight HU values(300 -1 0 000)was established.A force of 20 N along the im-plant axis was applied on the model.The stress values and distribution were calculated and analyzed.Results:The peak of stress val-ue and displacement discreased as HU value increased.In the range of HU value 800 -1 000 HU,the peak of stress value and dis-placement of bone interface did not significantly change with the increasing of HU value.Conclusion:Orbital bone density is an im-portant factor on orbital implant failure when HU value below 800. |
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| Keywords: | Orbital implant Stress distribution Three-dimensional finite element Bone density |
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