Creation of nano zirconia clasp combining aesthetic aspect and strength

• Project/Area Number: 15K11184
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Prosthodontics/ Dental materials science and
• Research Institution: Osaka Dental University
• Principal Investigator: OKAZAKI Joji 大阪歯科大学, 歯学部, 教授 (80169094)
• Co-Investigator(Kenkyū-buntansha): 小正 聡 大阪歯科大学, 歯学部, 講師 (70632066)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: ナノジルコニア / クラスプ / ジルコニアクラスプ

Outline of Final Research Achievements

The clasp of the partial denture generally used is inferior in aesthetics and can not be used in the case of metal allergy, so various materials and devices such as resin coating method and nonclasp denture have been examined It has not been applied to zirconia clasp because of its many clear parts and low elasticity. Therefore, in this research, we focus on nano zirconia with high fracture toughness but also elasticity, we will develop a new clasp with excellent aesthetic and mechanical strength and aim for clinical application. It is suggested that nanozirconia can be clinically applied by devising the denture clasp from the three point bending test, the pull - out test, and the clinical application.

Research Products

• [Journal Article] Bioactivity of NANOZR Induced by Alkali Treatment (2017)
  • Author(s): Nishizaki M, Komasa S, Taguchi Y, Nishizaki H, Okazaki J
  • Journal Title: International Journal of Molecular Science Volume: 18(4) Issue: 4 Pages: 780-780
  • DOI: 10.3390/ijms18040780
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Osteogenesis-Related Gene Expression on Alkali-Modified NANOZR and Titanium Surfaces with nanonetwork Structures (2017)
  • Author(s): Komasa S, Nishizaki M, Kusumoto T, Terada C, Yin D, Kawamoto A, Yamamoto S, Yoshimine S, Nishizaki H, Shimizu H, Okazaki J ，Kawazoe T
  • Journal Title: バイオインテグレーション学会雑誌 Volume: 7 Pages: 87-94
  • NAID: 130007877882
  • Peer Reviewed
• [Journal Article] Impact of clinical experience on the attitude of dentists toward non­metal clasp dentures (2016)
  • Author(s): Komasa S, Sato W, Naito D, Nishizaki M, Zhang H, Nakai K, Kusumoto T, Yoshimine S, Kon-i H, Takahashi K, Nishizaki H, Komasa Y, Okazaki J
  • Journal Title: Journal of Osaka Dental University Volume: 50(2) Pages: 85-92
  • NAID: 130005298536
  • Peer Reviewed
• [Presentation] アルカリ処理したナノジルコニアの生体活性 (2017)
  • Author(s): 西崎真理子, 小正 聡, 田口洋一郎, 西崎 宏, 岡崎定司
  • Organizer: 第47回日本口腔インプラント学会学術大会
• [Presentation] 審美性と強度を兼ね備えたナノジルコニアクラスプの創製 (2016)
  • Author(s): 岡崎 定司, 小正 聡, 佐藤 航, 西崎 宏
  • Organizer: 第23回日本歯科医学会総会
  • Place of Presentation: 福岡国際会議場 福岡市 福岡県
  • Year and Date: 2016-10-22
• [Presentation] 治療経験がノンメタルクラスプデンチャーに対する意識に与える影響について (2016)
  • Author(s): 佐藤 航, 小正 聡, 内藤 大介, 髙橋 一也, 西崎 宏, 小正 裕, 岡崎 定司
  • Organizer: 日本補綴歯科学会第１２５回学術大会
  • Place of Presentation: 石川音楽堂 金沢市 石川県
  • Year and Date: 2016-07-10