Kagoshima University · Graduate School of Medical and Dental Sciences · 教授

Research keywords歯科生体材料・チタン合金・歯科切削・歯科器械・歯科用CAD/CAMシステム・歯科用合金・CAD/CAMシステム・機械的特性・切削加工性

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• Otsuka Y., Rawal A., Koshy P., Ben-Nissan B., Kono H., Kikuchi M. . Structural transformations in mechanochemically-synthesized strontium-doped hydroxyapatite . Ceramics International52025 · 記述言語： 日本語 出版者・発行元： Ceramics International This study aims to investigate crystallization of strontium-substituted hydroxyapatite upon sintering. A study of mechanochemically-synthesized hydroxyapatite (HAp), doped with strontium at varying levels from 0 to 20 % is presented. The Sr-doped HAp powders were obtained by a mechanochemical method, followed by sintering at 1000 °C. The sintered samples were characterized using a complimentary set of SEM-EDX, XRD, FTIR, Raman, and solid-state NMR techniques. The FTIR spectra of the sintered samples showed a decreasing ν OH vibrational bands with increasing Sr content. This conflict is resolved by multinuclear solid-state NMR which conclusively demonstrates presence of OH− in all samples, and that the strontium doping does not influence the OH− concentration. Sr doping is demonstrated to not be random, with evidence of clustering, but without phase segregation even at the higher Sr loadings. The structural transformations of HAp revealed herein have significant implications in ongoing development of hydroxyapatite based systems, in monitoring the degree of hydroxylation, phase structure and concomitant effects on crystallinity and bioactivity. DOI： 10.1016/j.ceramint.2025.04.022 Scopus
• Yuta Otsuka, Besim Ben-Nissan, Hiroshi Kono, Tetsuo Sasaki, Masafumi Kikuchi . Mechanochemical synthesis and characterization of strontium substituted apatite for biomedical application2023 · 担当区分： 最終著者 記述言語： 英語 掲載種別： 研究論文（学術雑誌） DOI： https://doi.org/10.1016/j.oceram.2023.100459
• 補綴装置製作のための歯科材料学UPDATE2021 · 医歯薬出版株式会社 2021年12月
• Hiroshi Kono, Masafumi Kikuchi . Analysis of orthodontic wire springback to simplify wire bending . Orthodontic Waves79 ( 1 ) 57 - 632020 · 担当区分： 最終著者 記述言語： 英語 掲載種別： 研究論文（学術雑誌） 出版者・発行元： Orthodontic Waves DOI： 10.1080/13440241.2020.1741070 Scopus researchmap

• AI支援によるフルデジタル歯科治療を見据えた歯科治療ロボットの開発2025 · 担当区分： 研究代表者 資金種別： 競争的資金 配分額： 4550000円 （ 直接経費： 3500000円 、 間接経費： 1050000円 ）
• 一般社団法人日本歯科理工学会令和7年度九州地方会セミナー2025 · 菊地聖史 2025年10月
• 一般社団法人日本歯科理工学会第82回学術講演会2024 · 菊地聖史 2024年4月
• 一般社団法人日本歯科理工学会令和6年度九州地方会セミナー2024 · 菊地聖史 2024年10月

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