Three-dimensional porous carbonate apatite with sufficient mechanical strength as a bone substitute material

Tram Nguyen Xuan Thanh, Michito Maruta, Kanji Tsuru, Shigeki Matsuya, Kunio Ishikawa

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

5 被引用数 (Scopus)

抄録

In this study, three-dimensional porous carbonate apatite (CO3Ap) materials with the chemical compositions and structures similar to cancellous bone were produced via phosphorization of porous calcite precursor in hydrothermal condition. In order to make porous calcite precursor, negative replication of polyurethane foam that named as inverse ceramic foam method was conducted. When the polyurethane template occupied within the ceramic solid walls disappeared due to burning at high temperature, interconnected hollow pathways were produced. Polyurethane foam was used as a porogen-template firstly was coated layer by layer with synthetic resin to modify morphology and enlarge thickness of struts so as to expand porous area for satisficing cellular bioactivities. Calcium hydroxide (Ca(OH)2) slurry was then infiltrated into resin coatedpolyurethane foam. Heat treatment in atmosphere of oxygen and carbon dioxide gases was carried out to eliminate polyurethane template and induce carbonation process. Ca(OH)2 was converted to calcite with the internal porous channel architecture simulating polyurethane foam struts network. That interconnected porous calcite was subsequently transformed to CO3Ap with remaining the same macroporous structure through hydrothermal treatment in phosphate solution. The porous CO3Ap materials were implanted in the tibia of Japanese male rabbits and removed after a period of 3 months. The bone formation response of the three-dimensional porous carbonate apatite in vivo has been preliminary studied using micro-computed tomography (μ-CT) scanner. The results showed that the porous implant materials have sufficient mechanical strength to provide structural support during bone remodeling and successfully bond with host bone.

本文言語英語
ホスト出版物のタイトル11th International Fatigue Congress
出版社Trans Tech Publications
ページ1559-1564
ページ数6
ISBN(印刷版)9783038350088
DOI
出版ステータス出版済み - 1 1 2014
イベント11th International Fatigue Congress, FATIGUE 2014 - Melbourne, VIC, オーストラリア
継続期間: 3 2 20143 7 2014

出版物シリーズ

名前Advanced Materials Research
891-892
ISSN(印刷版)1022-6680

その他

その他11th International Fatigue Congress, FATIGUE 2014
Countryオーストラリア
CityMelbourne, VIC
Period3/2/143/7/14

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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