| Project/Area Number |
18592120
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
補綴理工系歯学
|
|---|
| Research Institution | Okayama University |
|---|
Principal Investigator |
IRIE Masao Okayama University, 大学院・医歯薬学総合研究科, 助教 (90105594)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
TANAKA Jiro 岡山大学, 大学院・医歯薬学総合研究科, 助教 (40171764)
SUZUKI Kazuomi 岡山大学, 大学院・医歯薬学総合研究科, 教授 (30050058)
齋藤 隆史 (斎藤 隆史) 北海道医療大学, 歯学部, 教授 (40265070)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
SAITOU Takashi 北海道医療大学, 歯学部, 教授 (40265070)
|
|---|
| Project Period (FY) |
2006 – 2009
|
| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥4,000,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥600,000)
Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2006: ¥1,400,000 (Direct Cost: ¥1,400,000)
|
|---|
| Keywords | 生体材料 / ナノ材料 / 複合材料・物性 / 歯学 / 医療・福祉 / 球状シリカ / グラスアイオノマーセメント / 抗ウ蝕性 / 高強度 / 開発 / 合着用 |
|---|
| Research Abstract |
This study was investigated the effects of spherical silica fillers on the mechanical properties and anti-carious activity of glass-ionomer cements (GIC). The original GIC and a preparation containing 20wt% spherical silica filler were also examined with regard to their fracture surface and fluoride release. The fillers increased the compressive strength remarkably : up to 17% in the case of silanized spherical fillers (SF). The SF increased the flexural strength by up to 17%. The addition of SF improved the workability and mechanical properties of GIC. When compared with the control (original GIC). The addition of SF significantly improved immediate marginal gap in the tooth cavities and setting shrinkage in Teflon mold up to 63% and 66% respectively. However, fluoride release was significantly reduced. And then, this research showed that addition of 5wt% SF increased the shear bond strength to human enamel and dentin.
|
