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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제9권 제3호
- 발행연도
- 2017.6
- 수록면
- 176 - 181 (6page)
- DOI
- https://doi.org/10.4047/jap.2017.9.3.176
이용수
초록· 키워드
오류제보하기
PURPOSE. The purpose of this study was to evaluate the marginal and internal gaps of Ni-Cr and Co-Cr copings, fabricated using the dental μ-SLA system.
MATERIALS AND METHODS. Ten study dies were made using a twostep silicone impression with a dental stone (type IV) from the master die of a tooth. Ni-Cr (NC group) and Co-Cr (CC group) alloy copings were designed using a dental scanner, CAD software, resin coping, and casting process. In addition, 10 Ni-Cr alloy copings were manufactured using the lost-wax technique (LW group). The marginal and internal gaps in the 3 groups were measured using a digital microscope (160 ×) with the silicone replica technique, and the obtained data were analyzed using the non-parametric Kruskal-Wallis H test. Post-hoc comparisons were performed using Bonferroni-corrected Mann-Whitney U tests (α=.05).
RESULTS. The mean (± standard deviation) values of the marginal, chamfer, axial wall, and occlusal gaps in the 3 groups were as follows: 81.5±73.8, 98.1±76.1, 87.1±44.8, and 146.8±78.7 μm in the LW group; 76.8±48.0, 141.7±57.1, 80.7±47.5, and 194.69±63.8 μm in the NC group; and 124.2±52.0, 199.5±71.0, 67.1±37.6, and 244.5±58.9 μm in the CC group.
CONCLUSION. The marginal gap in the LW and NC groups were clinically acceptable. Further improvement is needed for CC group to be used clinical practice.
목차
등록된 정보가 없습니다.
참고문헌 (34)
참고문헌 신청
Konstantoulakis E / 1998 / Marginal fit and surface roughness of crowns made with an accelerated casting technique / J Prosthet Dent 80:337~345
Tao J / 2006 / Fit of metal ceramic crowns cast in Au-1.6 wt% Ti alloy for different abutment finish line curvature / Dent Mater 22:397~404
Ucar Y / 2009 / Internal fit evaluation of crowns prepared using a new dental crown fabrication technique: laser-sintered Co-Cr crowns / J Prosthet Dent 102:253~259
Duret F / 1988 / CAD-CAM in dentistry / J Am Dent Assoc 117:715~720
Miyazaki T / 2009 / A review of dental CAD/CAM: current status and future perspectives from 20 years of experience / Dent Mater J 28:44~56
Tao J / 2006 / Fit of metal ceramic crowns cast in Au-1.6 wt% Ti alloy for different abutment finish line curvature / Dent Mater 22:397~404
Ucar Y / 2009 / Internal fit evaluation of crowns prepared using a new dental crown fabrication technique: laser-sintered Co-Cr crowns / J Prosthet Dent 102:253~259
Duret F / 1988 / CAD-CAM in dentistry / J Am Dent Assoc 117:715~720
Miyazaki T / 2009 / A review of dental CAD/CAM: current status and future perspectives from 20 years of experience / Dent Mater J 28:44~56
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