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2023 Fiscal Year Final Research Report

Development of woven structural scaffold materials for tailor-made cleft lip and palate treatment.

Research Project

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Project/Area Number 20K10240
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57070:Developmental dentistry-related
Research InstitutionOsaka Dental University

Principal Investigator

MATSUMOTO Naoyuki  大阪歯科大学, 歯学部, 教授 (70199884)

Co-Investigator(Kenkyū-buntansha) 橋本 典也  大阪歯科大学, 歯学部, 教授 (20228430)
本津 茂樹  近畿大学, 生物理工学部, 名誉教授 (40157102)
本田 義知  大阪歯科大学, 歯学部, 教授 (90547259)
陳 麗吉  大阪歯科大学, 歯学部, 助教 (20966816)
Project Period (FY) 2020-04-01 – 2024-03-31
Keywordsアパタイト
Outline of Final Research Achievements

The aim of this study was to prepare polycaprolactone porous scaffolds (HAp-PCL) coated with hydroxyapatite (HAp) by Er:YAG pulsed laser deposition (PLD) and to evaluate their physical properties, biocompatibility and osteogenic potential in vivo and in vitro.The Er:YAG-PLD method confirmed the coating of HAp on the PCL porous scaffolds.In vivo experiments showed that HAp coating promoted bone formation and that the amount of new bone in the HAp-PCL group was significantly higher than in the PCL group at all time points. This may be due to the superior bone regenerative capacity of HAp as well as the improved water wettability of the scaffold surface.

Free Research Field

再生歯学

Academic Significance and Societal Importance of the Research Achievements

顎裂を伴う唇顎口蓋裂は、顎裂部への二次的新鮮自家腸骨海綿骨移植が行われてきた。一方で、臨床の現場で自家骨は早期に吸収してしまい長期効果がみられないとの報告もある。また、唇顎口蓋裂のような複雑な裂形態では高い靭性と骨伝導性を有する足場材料が望ましい。ポリ乳酸等の吸収性高分子を紡糸し、CTデータを元にして織ることで任意の3次元形状へと整形する特殊技術を保持している。さらに、歯科用レーザーを用いて手術サイドで骨伝導性を持たせることを考案した。CTデータを元にしたオーダーメイドの吸収性足場材料の骨造成のメカニズム解明と骨造成能の定量的評価が可能であれば大きな顎裂を伴う唇顎口蓋裂の治療につながる。

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Published: 2025-01-30  

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