ラット上顎骨における陽極酸化と水熱処理によりチタンインプラント表面に形成されたハイドロキシアパタイト結晶の経時的観察(岩手医科大学学位審査報告)

• Ito Shigeki

  Department of Fixed Prosthodontics, School of Dentistry, Iwate Medical University

• Takebe Jun

  Department of Fixed Prosthodontics, School of Dentistry, Iwate Medical University

書誌事項

タイトル別名

• Longitudinal Observation of Thin Hydroxyapatite Layers Formed on Anodic Oxide Titanium Implants after Hydrothermal Treatment in a Rat Maxilla Model

抄録

Purpose: Highly crystalline thin hydroxyapatite (HA) layers deposited on the surface of commercially pure titanium (cpTi) by discharge anodic oxidation and hydrothermal treatment (SA treatment) enhance the value of cpTi as endosseous implants in clinical dentistry. In particular, the SA treatment affects the osteoconductive properties of cpTi. Determining whether this HA layer retains its chemical stability during osseous wound healing is crucial for its use in implants. In this study, we characterized the morphological, chemical, and structural features of HA layers on SA-treated cpTi implants in rat maxilla.<br>Materials and methods: SA-treated cpTi implants (diameter: 1.0 mm, length: 2.0 mm) were placed in the maxilla of 8-week-old Wistar rats. After 14, 21, and 28 days, the maxilla were harvested and the implant surfaces were analyzed by scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and x-ray photoelectron spectroscopy (XPS).<br>Results: SEM analysis revealed precipitated HA crystals on the implant surface; the crystals had a typical single hexagonal columnar shape and they were highly crystalline. Implantation up to 28 days changed neither the morphology nor the crystalline features of the thin HA layer. EPMA revealed an even distribution of P and Ca in the HA layers before and after implantation in the maxilla, while XPS indicated no change in the binding energies of P and Ca in the HA crystals.<br>Conclusion: The thin HA layer formed on the SA-treated cpTi implants remained stable during the process of jaw bone formation.

収録刊行物

• Prosthodontic Research & Practice

  Prosthodontic Research & Practice 7 (2), 82-88, 2008

  公益社団法人 日本補綴歯科学会

キーワード

• discharge anodic oxidation
• hydrothermal treatment
• hydroxyapatite crystal
• endosseous titanium implant
• animal studies

詳細情報

• CRID: 1390282680172108800
• NII論文ID: 10021954921
• NII書誌ID: AN00017474
• DOI: 10.2186/prp.7.82
• ISSN: 13477021
• Web Site: http://id.nii.ac.jp/1181/00001556/
• Web Site: http://www.jstage.jst.go.jp/article/prp/7/2/7_2_82/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2009105248
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可