THE APPLICATIO OF EXPERIMENTAL RESIN COMPOSITES ATTRACTIVE TO MAGNET FOR DENTAL MAGNETIC ATTACHMENT
| Project/Area Number |
06454561
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
補綴理工系歯学
|
|---|
| Research Institution | TSURUMI UNIVERSITY |
|---|
Principal Investigator |
HIRANO Susumu Tsurumi University School of Dental Medicine, Associate Professor, 歯学部, 助教授 (00089400)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
NOMOTO Rie Tsurumi University, School of Dental Medicine, Instructer, 歯学部, 助手 (20180789)
HIRASAWA Tadashi Tsurumi University, School of Dental Medicine, Professor, 歯学部, 教授 (80064335)
|
|---|
| Project Period (FY) |
1994 – 1995
|
| Project Status |
Completed (Fiscal Year 1995)
|
| Budget Amount *help |
¥5,600,000 (Direct Cost: ¥5,600,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1994: ¥4,900,000 (Direct Cost: ¥4,900,000)
|
|---|
| Keywords | Dental resin composite / Magnetic attachment / Metal filler / Attraction force / Stainless steel |
|---|
| Research Abstract |
This new experimental composite has a good shelf life and can be easily handled during restoration.
The maxmal flexural strength and the Knoop hardness value of this compositewere 7.7kgf/mm^2 and 64 respectively, when the filler was treated with 1.5g gamma MPTS in 70% ethanol solution per 100g of stainless steel filler. However mechanical properties of the composite require improvement for clinical application.
After immersion in 1% lactic acid solution at 37ﾟC for 7 days, the total amount of metal eluted from the composite was 0.7mg/cm^2. This value is under the Japanese apporval specifications for dental casting Ni-Cr alloys (1mg/cm^2).
The attraction force measurement using mandibular model showed a 25% decrease in attraction force of the magnet/composite system compared to that the magnet/keeper system.
|
Report
(3 results)
Research Products
(8 results)
