Mechanical and chemical properties of novel apatite-ionomer cement

2014 Fiscal Year Final Research Report

• Project/Area Number: 24592975
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Dental engineering/Regenerative dentistry
• Research Institution: Osaka Dental University
• Principal Investigator: ARITA Kenji 大阪歯科大学, 歯学部, 教授 (20168016)
• Co-Investigator(Kenkyū-buntansha): SHINONAGA Yukari 大阪歯科大学, 歯学部, 講師 (70531961)
• Research Collaborator: KATO Katsuhito 株式会社ジーシー, 研究員 ; NISHIMURA Takako 大阪歯科大学
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: グラスアイオノマーセメント / ハイドロキシアパタイト / 機械的強度 / フッ化物溶出能 / SEM

Outline of Final Research Achievements

The aim of this study is to investigate the role of hydroxyapatite (HAp) in novel apatite ionomer cement (AIC), an improved glass ionomer cement (GIC) that contains porous HAp. AIC samples were prepared using the latest conventional GIC, Fuji IX GP Extra, with porous and spherical HAp (HApS), and were subjected to mechanical strength measurements, fluoride release test, scanning electron microscopy observations and multi-mineral release test, and were compared with IX-Ex, Fuji IX GP (IX-GP) and S-PRG filler containing composite resin, Beautifil II (GIOMER). The flexural strength and fluoride release properties of AIC were significantly higher than those of IX-Ex. The release of fluoride, aluminum, silicon and phosphorus from AIC specimens was greater when compared with IX-Ex and GIOMER. Therefore, HAp improves both the strength and bioactive functions of GIC without losing the advantages of conventional GIC.

Free Research Field

歯学