Treatment of peri-implantitis by blasting Hydroxiapatite particles

2015 Fiscal Year Final Research Report

• Project/Area Number: 25462980
• 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: Tohoku University
• Principal Investigator: Akatsuka Ryo 東北大学, 歯学研究科(研究院), 助教 (10586514)
• Co-Investigator(Kenkyū-buntansha): SASAKI KEIICHI 東北大学, 歯学研究科(研究院), 教授 (30178644) ; KURIYAGAWA TUNEMOTO 東北大学, 医工学研究科(研究院), 教授 (90170092) ; YODA NOBUHIRO 東北大学, 歯学研究科(研究院), 助教 (20451601) ; NOJI MIYOKO 東北大学, 歯学研究科(研究院), 大学院非常勤講師 (70431583)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: パウダージェットデポジション / ハイドロキシアパタイト

Outline of Final Research Achievements

Powder jet depositions (PJD) is a precise mechanical coating technique that uses ultrafine particles accelerated to several hundred meters per second by a jet flow of a carrier gas to fabricate functional surfaces with high efficiency. PJD is performed at room temperature and atmospheric pressure, which enables it to be used with HA particles for the creation of HA films. The TiO2-HA particles in the deposited film were densely packed, the maximum and average film thickness were about 56µm and 28µm, respectively. There were no significant differences in the maximum and average thickness before and after thermal cycling. Vickers hardness was 371.39+/-20.68 and bonding strength was 14.78+/-4.44. There were also no significant differences in the hardness and the bonding strength before and after thermal cycling. The thickness, hardness and bonding strength of TiO2-HA films were almost equal to that of HA films created by PJD process.

Free Research Field

歯科補綴学