Desktop micro-CT image-based dynamic FEM analysis of stress wave pathways between mandibular trabecular bone and cortical bone with comparisons to virtual models with eliminated materials on pathways

被引：0

作者：

Nakano H. ^{[1
]}

Takano N. ^{[2
]}

Maki K. ^{[1
]}

机构：

[1] Department of Orthodontics, School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo

[2] Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa

来源：

Nakano, Haruhisa (nakanou@cb3.so-net.ne.jp) | 2016年 / Japan Society of Mechanical Engineers卷 / 11期

基金：

日本学术振兴会;

关键词：

Dental biomechanics; FEM; Homogenization method; Impact load; Micro-CT; Trabecular bone;

D O I：

10.1299/jbse.16-00313

中图分类号：

学科分类号：

摘要：

To a nalyze the biomechanical behavior of human bone, micro-CT image-based static FEM analyse s considering trabecular architecture have been carried out. In the field of dental biomechanics, not only the static analysis but also dynamic analysis against impact load is required. In this paper, a desktop micro-CT was used for the right half of a human mandible with 0.103 mm resolution after dissecting. The lost information by a saw was recovered by the homogenization model. The impact load was applied to the implant in the molar part and the load transfer from the implant to the cortical bone and trabecular bone was considered. The stress wave pathways from the implant to the condyle were analyzed by comparison with virtual FEM models with eliminated materials on pathways. It was revealed that the stress wave transferred from the implant neck and end part to peri-implant trabecular bone played a significant mechanical role. It was also found that the apparent wave speed in the trabecular bone region was as fast as that in the cortical bone. © 2016 The Japan Society of Mechanical Engineers.

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