2015 Fiscal Year Final Research Report
Study on the surface modification of the orthodontic material using bioactive glass
| Project/Area Number |
25463195
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Orthodontics/Pediatric dentistry
|
|---|
| Research Institution | Health Sciences University of Hokkaido |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
HASHIMOTO MASANORI 大阪大学, 歯学研究科, 准教授 (00337164)
MUGURUMA TAKESHI 北海道医療大学, 歯学部, 講師 (20343436)
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Keywords | バイオアクティブガラス / 再石灰化 |
|---|
| Outline of Final Research Achievements |
Bioactive glass (BG) was deposited on the orthodontic alumina by radio-frequency magnetron sputtering to study the enamel remineralization. BG-coated specimens were immersed in artificial saliva for 6 months. The specimens were studied with scanning electron microscope (SEM), Raman spectroscopic analysis and micro-X-ray diffraction. Human enamels were etched with phosphoric acid and then immersed with BG-coated specimen in artificial saliva. Nanoindentation testing of the specimens was conducted during the immersion. SEM photomicrographs showed the formation of needle-like and tabular structures after immersion. Raman and micro-XRD spectra confirmed that they consisted of calcium phosphate. The mechanical properties of the etched enamel specimens immersed with BG-coated specimen recovered significantly compared to those with the non-coated specimens. BG-coated alumina can accelerate the remineralization of etched enamel.
|
| Free Research Field |
歯科矯正学
|
