Effects of oxygen content of porous titanium metal on its apatite-forming ability and compressive strength |
| |
Authors: | Deepak K. Pattanayak Tomiharu Matsushita Kenji Doi Hiroaki Takadama Takashi Nakamura Tadashi Kokubo |
| |
Affiliation: | 1. Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai, 487-8501, Japan;2. R & D Section, Osakayakinkogyo, Tomoe 25, Bessho-cho, Miki, 673-0443, Japan;3. Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kawahara-cho 54, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan |
| |
Abstract: | Porous titanium metal subjected to NaOH and heat treatments is useful as a bone substitute as it shows high mechanical strength as well as osteoconductivity and osteoinductivity. However, the porous metal is liable to be contaminated with oxygen gas during the fabrication process and this incorporated oxygen could lead to adverse effects on the bioactivity and mechanical properties of the prepared porous body. In this study, oxygen contamination during fabrication of bioactive porous bodies was measured. It was found that the oxygen content of the titanium metal was increased from 0.08 to 0.23 mass% when the porous body was prepared from bar stock, and it further increased up to 0.51 mass% when it was subjected to NaOH and heat treatments. Despite this, the porous bodies subjected to NaOH and heat treatments formed apatite on their pore walls within 1 day in a simulated body fluid. This result was consistent with the apatite-forming ability of NaOH- and heat-treated titanium plates with different oxygen contents in the range of 0.05 to 0.30 mass%. The compressive strength of the porous body was increased about 10% by the NaOH and heat treatments. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|