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13 results on '"Minamida, Yasuhito"'

3. Autograft of Dentin Materials for Bone Regeneration

Author

Murata, Masaru, primary, Akazawa, Toshiyuki, additional, Mitsugi, Masaharu, additional, Arafat, Md, additional, Um, In-Woong, additional, Minamida, Yasuhito, additional, Kim, Kyung-Wook, additional, Kim, Young-Kyun, additional, Sun, Yao, additional, and Qi, Chunlin, additional

Published
2013
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5. Clinical Outcome of Orthognathic Surgery in the Oral and Maxillofacial Surgery of Health Sciences University of Hokkaido

Author

TAKEDA, SHIGEHIRO, primary, KITAJYO, HIROYUKI, additional, MINAMIDA, YASUHITO, additional, MATSUZAWA, FUMIHIRO, additional, SANO, SEIKO, additional, YAMAZAKI, ATSUE, additional, NAKAO, YUYA, additional, MIZOGUCHI, ITARU, additional, NAGAYASU, HIROKI, additional, SHIBATA, TAKANORI, additional, and SHIMO, TSUYOSHI, additional

Published
2018
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8. Bone Augmentation Using Novel Unidirectional Porous Hydroxyapatite with Bone Morphogenetic Protein-2 on Rat Skull

Author

1000010344516, Kashiwazaki, Haruhiko, Harada, Naoki, 1000080469692, Akazawa, Toshiyuki, Kabir, Md. Arafat, Minamida, Yasuhito, 1000000260662, Murata, Masaru, 1000010344516, Kashiwazaki, Haruhiko, Harada, Naoki, 1000080469692, Akazawa, Toshiyuki, Kabir, Md. Arafat, Minamida, Yasuhito, 1000000260662, and Murata, Masaru

Abstract

Unidirectional porous hydroxyapatite (UDPHAp) is a material whose microstructure consists of cross-sectional oval pores with a pore diameter in the range of 100-300 mu m that penetrate through the material. UDPHAp has proven suitable for osteogenesis and angiogenesis. The present study was designed to evaluate the osteogenic effect of a newly developed UDPHAp as a carrier of recombinant human bone morphogenetic protein-2 (rhBMP-2) in a rat onlay graft model. UDPHAp was implanted beneath the calvarial periosteum of rats to simulate alveolar bone augmentation in a clinical condition. At 2 weeks after implantation, UDPHAp with rhBMP-2 resulted in active bone formation, and the augmented bone was connected directly with the original bone, whereas commercialized porous hydroxyapatite (PHAp) with rhBMP-2 showed little bone formation. These results suggest that UDPHAp in this model is suitable for onlay graft and is an effective biomaterial for the rhBMP-2 delivery system.

Published
2013

9. Autograft of Dentin Materials for Bone Regeneration

Author

Murata, Masaru, Akazawa, Toshiyuki, Mitsugi, Masaharu, Kabir, Md Arafat, Um, In-Woong, Minamida, Yasuhito, Kim, Kyung-Wook, Kim, Young-Kyun, Sun, Yao, Qin, Chunlin, Murata, Masaru, Akazawa, Toshiyuki, Mitsugi, Masaharu, Kabir, Md Arafat, Um, In-Woong, Minamida, Yasuhito, Kim, Kyung-Wook, Kim, Young-Kyun, Sun, Yao, and Qin, Chunlin

Published
2013
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10. Bone Augmentation Using Novel Unidirectional Porous Hydroxyapatite with Bone Morphogenetic Protein-2 on Rat Skull

Author

Kashiwazaki, Haruhiko, Harada, Naoki, Akazawa, Toshiyuki, Kabir, Md. Arafat, Minamida, Yasuhito, Murata, Masaru, Kashiwazaki, Haruhiko, Harada, Naoki, Akazawa, Toshiyuki, Kabir, Md. Arafat, Minamida, Yasuhito, and Murata, Masaru

Abstract

Unidirectional porous hydroxyapatite (UDPHAp) is a material whose microstructure consists of cross-sectional oval pores with a pore diameter in the range of 100-300 mu m that penetrate through the material. UDPHAp has proven suitable for osteogenesis and angiogenesis. The present study was designed to evaluate the osteogenic effect of a newly developed UDPHAp as a carrier of recombinant human bone morphogenetic protein-2 (rhBMP-2) in a rat onlay graft model. UDPHAp was implanted beneath the calvarial periosteum of rats to simulate alveolar bone augmentation in a clinical condition. At 2 weeks after implantation, UDPHAp with rhBMP-2 resulted in active bone formation, and the augmented bone was connected directly with the original bone, whereas commercialized porous hydroxyapatite (PHAp) with rhBMP-2 showed little bone formation. These results suggest that UDPHAp in this model is suitable for onlay graft and is an effective biomaterial for the rhBMP-2 delivery system.

Published
2013

12. Erratum: Bioactive Surface Structure and Bio-absorption of Human Dentin Granules Designed by the Supersonic Demineralization and Biomimetic Coating Technique[Journal of Hard Tissue Biology 21[4] (2012) p351 - 358]

Author

Akazawa, Toshiyuki, primary, Murata, Masaru, additional, Minamida, Yasuhito, additional, Tingting, Wei, additional, Kabir, Arafat, additional, Hino, Jun, additional, Tazaki, Junichi, additional, Ito, Manabu, additional, and Kimura, Isao, additional

Published
2012
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13. Surface Design and Water Vapor-Adsorption Characteristics of Biomimetic Composite Materials Derived from Salmon Resource

Author

Akazawa, Toshiyuki, Murata, Masaru, Ito, Manabu, Nomura, Takafumi, Shigyo, Tatsuhiro, Sakai, Katsuyoshi, Minamida, Yasuhito, Kabir, Md. Arafat, Yamagishi, Tohru, Iida, Shunji, Nakamura, Katsuo, and Miyazaki, Satoshi

Abstract

Biomimetic composites of hydroxyapatite (HAp) and collagen with fast bio-absorption and good biocompatibility were designed utilizing salmon bone and skin at 283-293 K and pH 7.5-7.9 by a dissolution-precipitation method. Simultaneously, dissolved-precipitated HAp (dp-HA) was prepared at pH 9-10 using the calcined bone. The HAp/collagen composites (HA-C) were constituted by Ca2+-deficient HAp, I type-collagen and gelatin. At the synthetic temperature of 283 K, collagen fiber and HAp microcrystals were seen, while at 293 K, frock like-agglomerated particles or fiber like-oriented columnar ones were observed depending on the composition ratio (H/C) of HAp to collagen. Specific surface areas and total pore volumes for the HA-C synthesized at 293 K clearly increased with increasing the H/C, although there were micro-and-meso-pores in the pore diameters of 3-30 nm. Concerning water vapor-adsorption isotherms at 298 K for the HA-C powders, hysteresis-curves of the amounts of water vapor adsorbed (V) were recognized in the adsorption-desorption processes. The V values increased with increasing the H/C under the low relative pressures (P/PS) of 0-0.3 that mean monolayer-adsorption of water molecule. However, for H/C=2.2, the V values were the highest under the high P/PS of 0.70-0.90 that mean multilayer-adsorption and the biggest hysteresis-curve was found under the P/PS of 0.45-0.60, suggesting that the HA-C (H/C=2.2) powder not only adsorb water molecule on the surfaces but also absorb one into the crystal structure. Accordingly, the biomimetic HA-C powders will be applied as water-absorbable adsorption materials for cosmetic products or bone-regeneration therapy.

Published
2012
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