2012 Fiscal Year Final Research Report
All-ceramic crown prepared by a new method
| Project/Area Number |
22592175
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Prosthetic dentistry
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| Research Institution | Osaka Dental University |
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Principal Investigator |
KOMASA Yutaka 大阪歯科大学, 歯学部, 教授 (10131385)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 歯科 / 歯科理工学 / オールセラミックスクラウン / 審美補綴 |
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| Research Abstract |
We devised a production method for copings of all-ceramic crowns, which is possible at low cost and in a very short time. However, improvement was still necessary to make it widely available. A 4-step build up was most suitable for producing a coping of 0.5 mm in thickness. We found that the 3-point bending strength of the coping markedly increased to 183-211.3 MPa, and the highest strength was achieved when the mixing ratio of rough to fine grains was 40:50 (wt%). The fitness of coping did not have the influence by the preparation design of abutment tooth. It was suggested that fitness was improved by using a hot blast in a dry process. Even if glass infiltration firing time was shortened for 30 minutes, the glass infiltrated it enough.
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