• Title/Summary/Keyword: 비귀금속 합금

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Shear Bond Strength and Interfacial Characterization of Ceramic to Beryllium Free Nonprecious Alloys for Porcelain Fused to Metal Crown (베릴륨이 포함되지 않은 도재용착용 비귀금속 합금과 세라믹간의 전단결합강도와 계면특성)

  • Chung, In-Sung;Kim, Chi-Young
    • The Journal of the Korea Contents Association
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    • v.10 no.11
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    • pp.228-234
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    • 2010

  • Ni-Cr and Co-Cr alloy uncontained Be element for using as dental porcelain alloy were analyzed the mechanical properties through bonding strength and fracture test after the bonding with porcelain. The bonding strengths between alloy and ceramic were measured through the shear bond strength test. Consequently, the T-3 group contained Be element that had shear strength of 41.13(${\pm}5.11$)MPa was showed the highest shear strength than the other groups. The second highest group was a verabond contained Be element that had shear strength of 40.72(${\pm}5.98$)MPa. The results of the other groups according to the shear strength were Wirobond(38.40(${\pm}9.66$)MPa) belonged to Co-Cr alloy, and Verabond 2V(32.77(${\pm}4.31$)MPa), Bellabond N(28.63(${\pm}6.39$)MPa), Bellabond plus(24.97(${\pm}6.13$)MPa), Argeloy N.P. Star(22.69(${\pm}3.41$)MPa) uncontained Be element, respectively. The morphological aspects of the fracture surface between alloys and ceramic were observed that all groups were caused mixed failure as conformation attached ceramic fragments to metallic surface by fracture process.

  • https://doi.org/10.5392/JKCA.2010.10.11.228 인용 PDF KSCI

Effect of various casting alloys and abutment composition on the marginal accuracy of bar-type retainer (합금의 종류와 지대주 성분이 바형 유지 장치의 변연 적합도에 미치는 영향)

  • Lee, Yun-Hui;Song, Young-Gyun;Lee, Joon-Seok
    • The Journal of Korean Academy of Prosthodontics
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    • v.50 no.2
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    • pp.85-91
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    • 2012

  • Purpose: The object of this study was to determine if the low-priced alloy and metal UCLA abutment could be available for manufacturing bar-retained framework of implant prosthesis. Materials and methods: Bar structure was classified into 4 groups, The specimen of group 1 and 2 were based on casting high noble metal alloys and noble metal alloys with gold UCLA abutment. The specimen of group 3 and 4 were based on casting noble metal alloys and base metal alloys with metal UCLA abutment. Cast bar structure was installed in an acrylic resin model and only the screw on the hexed abutment side was tightened to 20 Ncm. On the opposite side, vertical discrepancy was measured with stereo microscope from front, back, and lateral side of the implant-abutment interface. One-way ANOVA was performed to analyze the marginal fit discrepancy. Results: One-way ANOVA test showed significant differences among all groups ($P$<.05) except for Group 1 and 3. Among them, difference between Group 1 and 2 was noticeable. Measured vertical discrepancies were all below $70{\mu}m$ except to Group 2. Conclusion: Base metal alloy and metal UCLA abutment could be used as an alternative to high-priced gold alloy for implant bar-retained framework.

  • https://doi.org/10.4047/jkap.2012.50.2.85 인용 PDF KSCI

EFFECT OF SURFACE TREATMENT OF NONPRECIOUS METAL FOR PORCELAIN IN THE SHEAR BOND STRENDTH BETWEEN METAL AND PORCELAIN (도재소부용 비귀금속 합금의 표면처리가 금속과 도재간의 전단결합강도에 미치는 영향)

  • Lee, Cheong-Hee;Cho, Sung-Am
    • The Journal of Korean Academy of Prosthodontics
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    • v.34 no.3
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    • pp.533-538
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    • 1996

  • A study of shear bond strength between porcelain and alloy pretreated with sandblasting, sputter etching, and sputter etching after sandblasting was established by Instron universal testing machine. 1. Sputter etched group after sandblasted(group IV) and sandblasted group(group II) were stronger than control group(group I) (P<0.05). 2. Sputter etched group(group III) and control group(group I) were not different(P>0.05).

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