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不同咬合力下骨-种植体之间的变形和应力的数值模拟分析。

Influence of Deformation and Stress between Bone and Implant from Various Bite Forces by Numerical Simulation Analysis.

机构信息

School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.

Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan.

出版信息

Biomed Res Int. 2017;2017:2827953. doi: 10.1155/2017/2827953. Epub 2017 May 28.

DOI:10.1155/2017/2827953
PMID:28630862
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5467297/
Abstract

Endosseous oral implant is applied for orthodontic anchorage in subjects with multiple tooth agenesis. Its effectiveness under orthodontic loading has been demonstrated clinically and experimentally. This study investigates the deformation and stress on the bone and implant for different bite forces by three-dimensional (3D) finite element (FE) methods. A numerical simulation of deformation and stress distributions around implants was used to estimate the survival life for implants. The model was applied to determine the pattern and distribution of deformations and stresses within the endosseous implant and on supporting tissues when the endosseous implant is used for orthodontic anchorage. A threaded implant was placed in an edentulous segment of a human mandible with cortical and cancellous bone. Analytical results demonstrate that maximum stresses were always located around the implant neck in marginal bone. The results also reveal that the stress for oblique force has the maximum value followed by the horizontal force; the vertical force causes the stress to have the minimum value between implant and bone. Thus, this area should be preserved clinically to maintain the structure and function of a bone implant.

摘要

骨内口腔种植体应用于多牙缺失患者的正畸锚固。其在正畸加载下的有效性已在临床和实验中得到证实。本研究通过三维（3D）有限元（FE）方法研究了不同咬合力下骨和种植体的变形和应力。数值模拟用于估计种植体的生存寿命。该模型应用于确定在骨内种植体和支持组织中，当骨内种植体用于正畸锚固时，种植体的变形和应力的模式和分布。一个螺纹种植体被放置在一个无牙颌的下颌骨段，皮质骨和松质骨。分析结果表明，最大的应力总是位于边缘骨的种植体颈部周围。结果还表明，斜向力的应力值最大，其次是水平力；垂直力导致种植体和骨之间的应力值最小。因此，该区域应在临床上保留，以维持骨种植体的结构和功能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9837/5467297/d61f8af416e2/BMRI2017-2827953.008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9837/5467297/40b31f7c8fe7/BMRI2017-2827953.002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9837/5467297/d61f8af416e2/BMRI2017-2827953.008.jpg

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