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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제8권 제1호
- 발행연도
- 2016.1
- 수록면
- 1 - 8 (8page)
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초록· 키워드
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PURPOSE. The purpose of this study was to evaluate the efficacy of two different metal conditioners for nonprecious metal alloys for the bonding of porcelain to a cobalt-chromium (Co-Cr) alloy.
MATERIALS AND METHODS. Disk-shaped specimens (2.5×10.0 mm) were cast with Co-Cr alloy and used as adherend materials. The bonding surfaces were polished with a 600-grid silicon carbide paper and airborne-particle abraded using 110 μm alumina particles. Bonding specimens were fabricated by applying and firing either of the metal conditioners on the airborne-particle abraded surface, followed by firing porcelain into 5 mm in diameter and 3 mm in height. Specimens without metal conditioner were also fabricated. Shear bond strength for each group (n=8) were measured and compared (α=.05). Sectional view of bonding interface was observed by SEM. EDS analysis was performed to determine the chemical elements of metal conditioners and to determine the failure modes after shear test.
RESULTS. There were significant differences among three groups, and two metal conditioner-applied groups showed significantly higher values compared to the non-metal conditioner group. The SEM observation of the sectional view at bonding interface revealed loose contact at porcelain-alloy surface for non-metal conditioner group, however, close contact at both alloy-metal conditioner and metal conditionerporcelain interfaces for both metal conditioner-applied groups. All the specimens showed mixed failures. EDS analysis showed that one metal conditioner was Si-based material, and another was Ti-based material. Si-based metal conditioner showed higher bond strengths compared to the Ti-based metal conditioner, but exhibited more porous failure surface failure.
CONCLUSION. Based on the results of this study, it can be stated that the application of metal conditioner is recommended for the bonding of porcelain to cobalt-chromium alloys.
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참고문헌 (36)
참고문헌 신청
Schweitzer DM / 2005 / Comparison of bond strength of a pressed ceramic fused to metal versus feldspathic porcelain fused to metal / J Prosthodont 14:239~247
Zarone F / 2011 / From porcelain-fused-tometal to zirconia: clinical and experimental considerations / Dent Mater 27:83~96
Kern M / 2012 / Ten-year outcome of three-unit fixed dental prostheses made from monolithic lithium disilicate ceramic / J Am Dent Assoc 143:234~240
Raigrodski AJ / 2012 / Survival and complications of zirconia-based fixed dental prostheses:a systematic review / J Prosthet Dent 107:170~177
Drummond JL / 1984 / Shear testing of the porcelain-metal bond / J Dent Res 63:1400~1401
Zarone F / 2011 / From porcelain-fused-tometal to zirconia: clinical and experimental considerations / Dent Mater 27:83~96
Kern M / 2012 / Ten-year outcome of three-unit fixed dental prostheses made from monolithic lithium disilicate ceramic / J Am Dent Assoc 143:234~240
Raigrodski AJ / 2012 / Survival and complications of zirconia-based fixed dental prostheses:a systematic review / J Prosthet Dent 107:170~177
Drummond JL / 1984 / Shear testing of the porcelain-metal bond / J Dent Res 63:1400~1401
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