医療用純チタン製メッシュプレートデバイスの曲げ特性評価

抄録

There are three bone graft methods for bone defects caused by diseases such as cancer and accident injuries: Autogenous bone grafts, Allografts and Artificial bone grafts. In this study, meshed pure titanium plates with high biocompatibility are introduced to solve the over stiffness and weight problems of ready-used metal implants. Basic mesh shapes are designed and applied to pure titanium plates using 3D CAD modeling tools. Bending properties of prototype meshed pure titanium plates are evaluated experimentally and analytically. Sample meshed plate specimens with 60°, 90° axis-symmetrical mesh shape types were fabricated for 3-point bending tests. The pseudo bending elastic moduli of meshed plate specimens obtained from 3-point bending test are ranged from 4.92 GPa to 10.15 GPa, within the elasticity range of natural cortical bones from 2.0 GPa to 30.0 GPa. Analytical approach method is validated with high accuracy by comparison with experimental and analytical results for evaluation on bending property of meshed plates. Using the highly accurate analytical method, the influence of various design variables on bending characteristics of pure titanium meshed plates are grasped and reported in this study.