研究者詳細 - 河野　博史

論文 - 河野　博史

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Otsuka Y., Higashinakao T., Kono H., Kikuchi M. . Monitoring Dental Zinc Oxide Polyacrylate Cement Using Near-Infrared Spectroscopy . Journal of Nondestructive Evaluation44 ( 2 ) 2025年4月査読

Yuta Otsuka, Aditya Rawal, Pramod Koshy, Besim Ben-Nissan, Hiroshi Kono, Masafumi Kikuchi . Structural transformations in mechanochemically-synthesized strontium-doped hydroxyapatite . Ceramics International 2025年4月査読国際共著国際誌

Otsuka Y., Ito S., Noguchi K., Kono H., Kikuchi M. . Monitoring of self-setting apatite cement using near-infrared spectroscopy: time-course evaluation using machine learning . Journal of the Australian Ceramic Society 2025年1月査読

Yuta Otsuka, Tomohiro Masuzaki, Masahiro Nishimura, Hiroshi Kono, Masafumi Kikuchi . Modeling of calcium phosphate based on an LCD 3D printer using brushite and calcium hydroxide . Journal of the Australian Ceramic Society60 ( 5 ) 1689 - 1696 2024年9月査読国際誌

Mihiro Itotagawa, Hiroshi Kono, Tadahiro Higashinakao, Yuki Sugiura, Yuta Otsuka, Masafumi Kikuchi, Yoshihiro Nishitani . Adsorption of oral antibacterial agents on zirconia surfaces with different crystal systems . RSC Advances14 ( 36 ) 26457 - 26463 2024年8月査読国際誌

Tadahiro Higashinakao, Hiroshi Kono, Mihiro Itotagawa, Yuki Sugiura, Yuta Otsuka, Masafumi Kikuchi . Preparation and antibacterial evaluation of silver-doped zirconia for enhanced dental restoration performance . Biomedical Materials19 ( 5 ) 2024年8月査読国際誌

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IOP Publishing

Abstract

Because of its superior strength, esthetic properties, and excellent biocompatibility, zirconia is preferred for dental prosthetic such as crowns and bridges. However, zirconia crowns and bridges are susceptible to secondary caries owing to margin leakage. Silver is a well-known antibacterial agent, making it a desirable additive to zirconia crowns and bridges for secondary caries prevention. This study focuses on imparting zirconia composite with antibacterial properties to enhance its protective capacity in dental restorations. We used the sol–gel method to dope Ag into zirconia. Silver-doped zirconia powders were prepared at Zr:Ag molar ratios of 100:0,100:0.1, 100:0.5, 100:1, 100:3, and 100:5 (respective samples denoted as Ag-0, Ag-0.1, Ag-0.5, Ag-1, Ag-3, and Ag-5) and were subjected to firing at various temperatures (400–1,000 °C). We performed X-ray diffraction to investigate the crystal phase of these powders and X-ray fluorescence and field emission scanning electron microscopy to analyze their elemental composition and surface morphology, respectively. Moreover, we performed spectrophotometry to determine the L*a*b* color values, conducted dissolution tests, and quantified the Ag content through inductively coupled plasma optical emission spectroscopy (ICP-OES). In addition, we studied the antibacterial activity of the samples. Analyses of the samples fired at ≤600 °C revealed a predominantly white to grayish-white coloration and a tetragonal crystal phase. Firing at ≥700 °C resulted in gray or dark gray coloration and a monoclinic crystal phase. The Ag content decreased after firing at 900 °C or 1,000 °C. Ag-0.5 and above exhibited antibacterial activity against both Escherichia coli and Staphylococcus aureus. Therefore, the minimum effective silver-doped zirconia sample was found to be Ag-0.5. This study allows the exploration of the antimicrobial potential of silver-doped zirconia materials in dental applications such as prosthdontical lining materials, promoting the development of innovative restorations with protective capacity against secondary caries.&#xD;

DOI： 10.1088/1748-605x/ad6ac3

Scopus

PubMed

その他リンク： https://iopscience.iop.org/article/10.1088/1748-605X/ad6ac3/pdf

KADOKAWA Akihiko, MURAHARA Sadaaki, KONO Hiroshi, UENODAN Asami, FUCHIDA Asako, NISHIO Fumiko, MINAMI Hiroyuki . Physical properties of experimental light-curing pattern resins based on poly (n-butyl methacrylate) or poly(iso-butyl methacrylate) . Dental Materials Journal43 ( 4 ) 546 - 551 2024年7月査読国際誌

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：The Japanese Society for Dental Materials and Devices

<p>Experimental light-curing pattern resins were fabricated to produce pattern resin materials with adequate dimensional stability. The light-curing pattern resins consisted of poly(n-butyl methacrylate) or poly(iso-butyl methacrylate) (PiBMA) polymers and methacrylate monomers. The physical properties, amount of residual ash after burning, Vickers hardness, flexural strength, and volumetric polymerization shrinkage of each material were determined. The data obtained for the prepared resins were compared with those of a commercially available pattern resin, Palavit G (PG). A lower amount of residual ash was observed for some of the prepared resins than for PG. The Vickers hardness and flexural strength values of all experimental resins were lower than those of PG. The volumetric polymerization shrinkage of all the experimental resins based on PiBMA was lower than that of PG. These results suggest that acrylic light-curing resin materials based on PiBMA may be useful for patterning and indexing during soldering.</p>

DOI： 10.4012/dmj.2023-278

Scopus

PubMed

Yuta Otsuka, Hiroko Indo, Yusuke Kawashima, Tatsuro Tanaka, Hiroshi Kono, Masafumi Kikuchi . Eichner classification based on panoramic X-ray images using deep learning: A pilot study . Bio-Medical Materials and Engineering35 ( 4 ) 377 - 386 2024年7月査読国際誌

Yuta Otsuka, Hiroshi Kono, Masafumi Kikuchi . Mechanochemical synthesis of cerium chlorapatite from a mixture of cerium chloride heptahydrate, dicalcium phosphate dihydrate, and calcium hydroxide for biomedical application. . Bio-Medical Materials and Engineering35 ( 1 ) 77 - 85 2024年1月査読

Yuta Otsuka, Besim Ben-Nissan, Hiroshi Kono, Tetsuro Sasaki, Masafumi Kikuchi . Mechanochemical synthesis and characterization of strontium substituted apatite for biomedical application . 16 2023年9月査読

Eriko Kuramoto, Ayano Kitawaki, Takakazu Yagi, Hiroshi Kono, Shin-Ei Matsumoto, Hiromitsu Hara, Yasumasa Ohyagi, Haruki Iwai, Atsushi Yamanaka, Tetsuya Goto . Development of a system to analyze oral frailty associated with Alzheimer's disease using a mouse model. . Frontiers in aging neuroscience14 935033 2022年8月査読

Hiroshi Kono and Masafumi Kikuchi . Analysis of orthodontic wire springback to simplify wire bending . ORTHODONTIC WAVES79 ( 1 ) 57 - 63 2020年3月査読

長澤麻沙子, 河野博史, 大久保昌和, 秋葉奈美, 峯篤史, 魚島勝美 . 企画：第128回学術大会イブニングセッション2　補綴歯科における「技能教育」を考える . 日本補綴歯科学会誌12 ( 3 ) 243 - 256 2020年

記述言語：日本語出版者・発行元：公益社団法人日本補綴歯科学会

<p>　歯学教育の大きな目標のひとつは臨床能力の獲得であり，十分な知識に裏付けられ，臨床における多様性に対応できる技能の習得は必須である．特に補綴臨床においては補綴診断能力のみならず，高い「臨床技能」が必須である．2020年度より一斉技能試験が診療参加型臨床実習後の客観的臨床能力試験（Post-CC CPX）の一部として正式に実施される予定であるが，これは社会的事情を背景として臨床実習の実施形態が大きく変化したことに対して，卒業時の歯学生の技能を担保するために社会に対する説明責任の一端である．また，2019年から補綴歯科学会において全国の歯学生を対象とした学生技能コンペティションが開催されることになった．そこで今回，補綴歯科における「技能教育」のあり方について，明確な到達目標，方略と評価について考えたい．質の高い歯科医師を輩出する責務を負う教育機関の一員として，特に補綴治療の専門家として「技能教育」を再考したい．</p>

DOI： 10.2186/ajps.12.243

Hiroshi Kono, Hiroyuki Arikawa, Syunichi Hamamura, Yasuhiro Sonoda, Masafumi Kikuchi . Effect of Sintering Conditions on Translucency of High Translucent Zirconia . Key Engineering Materials829 49 - 53 2019年12月査読

Hiroyuki ARIKAWA, Yoshito MINESAKI, Koichi MURAGUCHI, Hiroshi KONO, Masafumi KIKUCHI . Thermochromism of restorative composite resins . Dental Materials Journal38 ( 2 ) 329 - 336 2019年3月査読

Kono H, Sasahara H, Furukawa S, Taguchi N. . An Analysis of Background Factors Influencing Selection of Residency Facility for Dental Students in Universities Located in Rural Areas in Japan . The Open Dentistry Journal9 159 - 167 2015年5月査読

河野博史 . 日本医学教育学会主催医学教育専門家養成を目指したパイロットコースの研修報告 . 鹿児島大学歯学部紀要32 2012年3月招待査読

田口則宏，諏訪素子，吉田礼子，松本祐子，志野久美子，河野博史，岩下洋一朗 . 鹿児島大学医学部・歯学部付属病院歯科医師臨床研修プログラムの評価 . 鹿児島県歯科医師会会報 ( 101 ) 8 - 10 2012年3月招待

Daisuke Yamashita, Miho Machigashira, Motoharu Miyamoto, Hironobu Takeuchi, Naoshi Takeuchi, Hiroshi Kono, Kazuyuki Noguchi, Seiji Ban . Comparison of Osteoblast-like Cell Response to Zirconia and Titanium . Archives of BioCeramics Researches10 34 - 37 2010年11月査読

Hiroshi kono, Daisuke Yamashita, Norihiro Taguchi, Seiji Ban . Relationship between Firing Temperature and Mechanical Properties of Zirconia . Archives of BioCeramics Researches10 98 - 101 2010年11月査読

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