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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 157 - 163 (7page)
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Purpose: It is to compare and evaluate the change of the wear rate and phase variation of the Zirconia before and after the sintering after the grinding by a high speed equipment manufactured for the Zirconia. Methods: The specimen of the sintered Zirconia was manufactured as size of $15mm{\times}15mm{\times}2mm$. The grinding has been applied to each of all pieces of each test groups for a minute fit for each condition at same speed of 50,000 rpm by a diamond bur at high speed handpiece with injection of the air and water. For the observation of the surface before and after the sintering of the each test piece, the cross section of it was observed as 100 magnification by a scanning electron microscope after it was coated by PT, and the diffraction analysis was performed by XDR to compare the crystal phase of the Zirconia. The average surface roughness value of all specimens were evaluated. The wear test was performed at room temperature by applying a load of 1kg for 120,000 cycles for the chewing period 6 months. Wear was analyzed for the enamel cusps by measurement of the vertical substance loss with a laser scanner. Conclusion: The phase variation from the tetragonal phase to the monoclinic phase was confirmed in the test group of the pre-sintered Zirconia after the grinding, and the value of the surface roughness and the wear rate was increased in experimental group.
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참고문헌 (26)
참고문헌 신청
Denry I / 2006 / Microstructural and crystallographic surface changes faer grinding zirconia-based dental ceramics / J Biomed Mater Res 76B:440~448
Heintze SD / 2010 / Survival of irconia-and metal-supported fixed dental prostheses: a systemic review / Int J Prosthodont 23:493~502
Heintze SD / 2005 / Wear of ten dental restorative materials in five wear simulators - results of a round robin test / Dent Mater 21:304~317
Helvey GA / 2007 / Zirconia and computer-aided design/computer-aided manufacturing (CAD/CAM)dentistry / Functional Esthet Rest Dent, Series J (3):28~39
Kim HJ / 2011 / Effect of zirconia surface treatments on the shear bond strength of veneering ceramic / J Prosthet Dent 105:315~322
Heintze SD / 2010 / Survival of irconia-and metal-supported fixed dental prostheses: a systemic review / Int J Prosthodont 23:493~502
Heintze SD / 2005 / Wear of ten dental restorative materials in five wear simulators - results of a round robin test / Dent Mater 21:304~317
Helvey GA / 2007 / Zirconia and computer-aided design/computer-aided manufacturing (CAD/CAM)dentistry / Functional Esthet Rest Dent, Series J (3):28~39
Kim HJ / 2011 / Effect of zirconia surface treatments on the shear bond strength of veneering ceramic / J Prosthet Dent 105:315~322
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