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Effects of bone substitutes in guided bone regeneration for immediate implant placement after tooth extraction in rat maxillae

Research Project

Project/Area Number 22K21043
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0907:Oral science and related fields
Research InstitutionNagasaki University

Principal Investigator

Zhang Xiaoxu  長崎大学, 病院(歯学系), 助教 (00965303)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsインプラント / 骨 / 炭酸アパタイト
Outline of Research at the Start

歯牙欠損に対する治療法として、近年歯科インプラント治療の需要が増加している。欠損範囲が大きい症例では生体侵襲も考慮し骨補填材が必須となるが、非吸収性人工骨補填材には長期残存による感染リスクがあることが問題視されており、自家骨に代わる骨補填材が求められてきた。そこで研究代表者は、骨の無機成分と同じ炭酸アパタイトを主成分とした新しい骨補填材に着目した。骨組織に近い組成のため、自家骨と類似の骨置換過程を辿るとされる。本研究の目的は、より良い骨補填材創製のため、炭酸アパタイト製骨補填材の骨組織置換機構を解明することにある。

Outline of Final Research Achievements

In recent years, the demand for dental implants as a treatment method for tooth defects has increased. However, non-resorbable artificial bone replacement materials are at risk of infection owing to long-term residual use, and there is a need for a bone replacement material that can replace autogenous bone. In this study, we focused on a bone grafting material composed mainly of carbonate apatite as an artificial material with a composition similar to that of autologous bone, and created a model of implant placement with GBR to investigate the control of resorption. β-TCP was found to have the best reactivity in the early course of 14 days after implantation of various bone grafting materials, and new bone began to replace the space between the existing bone and bone grafting material.

Academic Significance and Societal Importance of the Research Achievements

炭酸アパタイト製骨補填材は2017年に薬事承認を受け、世界初の炭酸アパタイトを主成分とする、国内でインプラント治療に適応が認められた骨補填材である。国内外で炭酸アパタイトの研究が行われているが、補填材に関する骨置換過程追跡研究はなく、さらに開発までの研究では、顎骨ではなく脛骨、腓骨、ならびに頭蓋骨を用いて研究が行われており、顎骨における炭酸アパタイト置換動態解明研究は国内外に存在していない。本研究の研究成果により、炭酸アパタイトを用いてより安全で確実なインプラント治療を提供できる科学的根拠の集積に寄与できるだけでなく、口腔以外の骨欠損部位に対する再生治療に対する基盤構築にも大きな貢献ができる。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (6 results)

All 2024 2023

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Evaluation of carbonate apatite as a bone substitute in rat extraction sockets from the perspective of mesenchymal stem cells2023

    • Author(s)
      Takahashi Ryosuke、Atsuta Ikiru、Narimatsu Ikue、Yamaza Takayoshi、Zhang Xiaoxu、Egashira Yuki、Koyano Kiyoshi、Ayukawa Yasunori
    • Journal Title

      Dental Materials Journal

      Volume: 42 Issue: 2 Pages: 282-290

    • DOI

      10.4012/dmj.2022-040

    • ISSN
      0287-4547, 1881-1361
    • Year and Date
      2023-03-25
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] The effects of bone substitutes in guided bone regeneration for immediate implant placement after post-tooth extraction in rat maxillae2024

    • Author(s)
      Xiaoxu Zhang , Shinichiro Kuroshima , Yusuke Uto , Yusuke Uchida , Lee Juo Pei , Takashi Sawase
    • Organizer
      The 8th Biennial Joint Congress of CPS-JPS-KAP
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of implant placement on long-term distribution of denatured collagen in peri-implant bone in rat maxillae2024

    • Author(s)
      Yusuke Uto, Shinichiro Kuroshima, Yusuke Uchida, Yuya Yamanouchi, Xiaoxu Zhang, Juo Pei Lee, Takashi Sawase
    • Organizer
      The 8th Biennial Joint Congress of CPS-JPS-KAP
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of intermittent PTH administration on early stages of wound healing around implants in ovariectomized rat maxillae2024

    • Author(s)
      Yusuke Uchida, Farah A. Al Omari, Shinichiro Kuroshima, Yusuke Uto, Xiaoxu Zhang, Soichiro Dohi, Takashi Sawase
    • Organizer
      The 8th Biennial Joint Congress of CPS-JPS-KAP
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ラット上顎骨におけるインプラント周囲骨組織のコラーゲン線維変性2023

    • Author(s)
      右藤 友督, 黒嶋 伸一郎, 山之内 裕也, 内田 悠介, Al-Omari Farah A, 張 暁旭, 石嵜 智大, 澤瀬 隆
    • Organizer
      第53 回公益社団法人日本口腔インプラント学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ラット上顎骨へのインプラント埋入により生じる骨コラーゲン線維の変性と経過2023

    • Author(s)
      右藤 友督, 黒嶋 伸一郎, 内田 悠介, 張 暁旭, Al-Omari Farah A, 山之内 裕也, Lee Juo Pei, 澤瀬 隆
    • Organizer
      第8回日本骨免疫学会
    • Related Report
      2023 Annual Research Report

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Published: 2022-09-01   Modified: 2025-01-30  

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