Mechanical properties of monolithic zirconia crowns
| Project/Area Number |
25462981
|
|---|
| 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 |
Ryoichi Inagaki 東北大学, 歯学研究科(研究院), 講師 (60260444)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
NAKAMURA Keisuke 東北大学, 大学院歯学研究科, 助教 (30431589)
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
|---|
| Keywords | ジルコニア / 補綴装置 / 強度 / 耐久性 / クラウン / 低温劣化 / 厚み / CAD/CAM |
|---|
| Outline of Final Research Achievements |
The present study aimed to evaluate the influence of crown thickness on the fracture resistance of monolithic zirconia crowns. In addition, the effects of aging (spontaneous crystalline phase transformation), cyclic loading and addition of coloring agents were investigated.
The results demonstrated that monolithic zirconia crowns with a minimal thickness of 0.5 mm could work as molar crowns. Even though monolithic zirconia crowns were affected by aging and cyclic loading, the fracture load of the crown was sufficiently higher than maximum bite force (about 1000 N). Furthermore, it was shown that the coloring procedure would not affect the strength of zirconia. The results obtained in the present study should be verified in clinical studies in the future.
|
Report
(4 results)
Research Products
(12 results)
