Development of multifunctional nano-composite ceramics suitable for all-ceramic restorations
| Project/Area Number |
23592840
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Prosthetic dentistry
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| Research Institution | Osaka University |
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Principal Investigator |
NAKAMURA Takashi 大阪大学, 歯学研究科(研究院), 准教授 (20198211)
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| Co-Investigator(Kenkyū-buntansha) |
WAKABAYASHI Kazumichi 大阪大学, 歯学部附属病院, 助教 (50432547)
SEKINO Tohru 東北大学, 多元物質科学研究所, 准教授 (20226658)
YATANI Hirofumi 大阪大学, 大学院歯学研究科, 教授 (80174530)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | ジルコニア / ナノ複合化 / CAD/CAM / ポーラス / ２層構造 / クラウン / 適合 / 破壊抵抗 / ポーラスサーフェス / 多孔質体 |
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| Research Abstract |
All-ceramic crowns and fixed partial dentures made with zirconia frames have excellent esthetics and biocompatibility, but there is some suggestion that they pose problems of fracturing and/or dislodgement of the veneering porcelain. The purpose of this study is to evaluate the workability of new hybrid zirconia and examine the fracture resistance of all-ceramic crowns using this hybrid zirconia frames.
Completed zirconia frames were veneered with tooth-colored porcelain. The marginal and internal gaps between frames/crowns and abutments were measured. Each crown specimen was subjected to a fracture test.
There were no significant differences in marginal and internal gap among all the frames and crowns. The crown with the hybrid zirconia frame had a 31-35% greater fracture load than that with the commercial or dense zirconia frame. This suggests that the all-ceramic crowns with a hybrid zirconia frame have a high fracture resistance.
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Report
(4 results)
Research Products
(30 results)
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[Journal Article] Shear bond strength of veneering porcelain to porous zirconia2014
Author(s)
Nakamura, T., Sugano, T., Usami, H., Wakabayashi, K., Ohnishi H., Sekino, T. and Yatani H.
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Journal Title
Dent Mater. J.
Volume: 33
Pages: 220-225
NAID
Related Report
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[Journal Article] Shear bond strength of veneering porcelain to porous zirconia.2014
Author(s)
Nakamura, T, Sugano, T., Usami, H., Wakabayashi, K., Ohnishi H., Sekino, T., Yatani H.
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Journal Title
Dental Materials Journal
Volume: 33(2)
Pages: 1-6
NAID
Related Report
Peer Reviewed
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[Journal Article] Current status of zirconia restoration2013
Author(s)
Miyazaki, T., Nakamura, T., Matsumura, H., Ban, S., and Kobayashi, T.
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Journal Title
Journal of Prosthodontic Research
Volume: 57
Issue: 4
Pages: 236-261
DOI
NAID
ISSN
1883-1958, 1883-9207
Related Report
Peer Reviewed
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[Journal Article] The relationship between a new silica -doped zirconia and its resistance to low-temperature degradation (LTD)2012
Author(s)
Nakamura, T., Usami, H., Ohnishi, H., Nishida, H., Tang, H., Wakabayashi, K., Sekino, T. and Yatani H.
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Journal Title
Dent. Mater. J.
Volume: 31
Pages: 106-112
Related Report
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[Presentation] Bond strength between veneering porcelain and zirconia ceramics with porous surface2012
Author(s)
Sugano, T., Nakamura, T., Wakabayashi, K., Usami, H., Okamoto, K., Yatani H.
Organizer
12^<th> Biennial meeting of Asian Academy of Aesthetic Dentistry
Place of Presentation
Sapporo, Japan
Related Report
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[Presentation] Bond strength between veneering porcelain and zirconia ceramics with porous surface.2012
Author(s)
Sugano, T., Nakamura, T., Wakabayashi, K., Usami, H., Okamoto, K., Yatani H.
Organizer
12th Biennial meeting of Asian Academy of Aesthetic Dentistry
Place of Presentation
Sapporo, Japan.
Related Report
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