title: Consideration of shear modulus in biomechanical analysis of peri-implant jaw bone: accuracy verification using image-based multi-scale simulation.
abstract: The aim of this study was to clarify the influence of shear modulus on the analytical accuracy in peri-implant jaw bone simulation. A 3D finite element (FE) model was prepared based on micro-CT data obtained from images of a jawbone containing implants. A precise model that closely reproduced the trabecular architecture, and equivalent models that gave shear modulus values taking the trabecular architecture into account, were prepared. Displacement norms during loading were calculated, and the displacement error was evaluated. The model that gave shear modulus values taking the trabecular architecture into account showed an analytical error of around 10-20% in the cancellous bone region, while in the model that used incorrect shear modulus, the analytical error exceeded 40% in certain regions. The shear modulus should be evaluated precisely in addition to the Young modulus when considering the mechanics of peri-implant trabecular bone structure.
authors.affiliation: Department of Anatomy, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, Chiba-shi, Chiba 261-8502, Japan. matsuna@tdc.ac.jp
authors.forename: Satoru
authors.initials: S
authors.lastname: Matsunaga
authors.forename: Hiroyoshi
authors.initials: H
authors.lastname: Naito
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Tamatsu
authors.forename: Naoki
authors.initials: N
authors.lastname: Takano
authors.forename: Shinichi
authors.initials: S
authors.lastname: Abe
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Ide
mesh_terms: D000539:Alveolar Process / Q000033:anatomy & histology* / Q000000981:diagnostic imaging / Q000502:physiology*; D001696:Biomechanical Phenomena; D003198:Computer Simulation; D015921:Dental Implants; D003799:Dental Stress Analysis / Q000379:methods*; D061827:Dimensional Measurement Accuracy; D055119:Elastic Modulus; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional; D033081:Shear Strength; D055114:X-Ray Microtomography
chemical_list: D015921:Dental Implants