비귀금속 합금에 적용한 Au Based Bonding Agent가 금속-도재 결합에 미치는 영향
The Effect of a Au Based Bonding Agent Coating on Non-Precious Metals-Ceramic Bond Strength
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초록
본 연구는 도재소부용 비귀금속에 Au 코팅 층을 형성 하고, Au 코팅 층이 금속-도재의 결합력에 미치는 영향을 알아보고자 2축 굴곡 시험 후에 SEM/EDS 방법으로 조사하여 비교하였다. 1. Ni-Cr alloy 군과 Co-Cr alloy 군, 그리고 Ti 군의 절 단면 시편의 전자현미경 사진에서 Au 코팅 층은 산 화층의 확산을 제어하는 것으로 관찰되었다. 2. 2축 굴곡 시험 후에 EDS 분석 결과 Ni-Cr alloy 군 과 Co-Cr alloy 군에서 Si 함량은 Au 코팅 층을 형 성한 시편에서 약간 감소하였고, 결합실패의 형태는 cohesive failure와 adhesive failure가 혼재된 양상으 로 관찰되었다. 3. Ni-Cr alloy 군과 Co-Cr alloy 군에서 Au 코팅 층은 도재-금속 결합력에 미치는 영향은 미미하였다. 4. Ti 군의 결합실패 형태는 Ni-Cr alloy 군과 Co-Cr alloy 군에 비해서 adhesive failure 양상이 두드러지 게 관찰되었고, Au 코팅 층은 도재-금속 결합력에 영향을 미치지 않았다. 이상의 결과 비귀금속에 적용한 Au 코팅은 산화층의 확산을 제어 하는 것으로 관찰 되었으나, 금속-도재 간의 결합력 증진에 미치는 효과는 미미하였다. Au 코팅을 이 용하여 금속-도재 간의 결합력 증진을 위해서는 많은 연 구가 지속되어야 할 것으로 사료된다.
Abstract
The purpose of this study investigated the effect of Au coating on adhesion between porcelain matrix and metal substructure interface. Titanium, Ni-Cr alloy and Co-Cr alloy are well known as proper metal for the dental restorations. The success of a porcelain fused to metal (PFM) restoration depends upon the quality of the porcelain-metal bond. However, adhesion between dental alloys and porcelain is related to diffusion of oxygen during ceramic firing. The excessive oxidized layers make hard adhesion between dental alloy and ceramic. Ni-Cr and Co-Cr specimens were divided into a test and a control group and Titanium specimens were divided into three test groups and a control group. Each group had 20 specimens. The adhesion characteristics of porcelain and metal with Au coating layer and without Au coating layer were observed with scanning electron microscopy(SEM). The adhesion was evaluated by a biaxial flexure test and volume fraction of adherent porcelain was determined by SEM/EDS analysis. Result of this study suggest that Au coating layer is effective barrier to diffuse oxide layer completely protect non-precious alloys from oxidation during the porcelain firing. The SEM photomicrographs of cross-section specimens showed a smooth interface between Au coating layer and metals and porcelain which suggested proper chemical bonding, and no gap, porosity were observed. The mode of failure was mainly adhesive for Ti tested specimens, but mixed failures with adhesive and cohesive were observed in Ni-Cr and Co-Cr specimens. The adhesion between non-precious metals and porcelain would not be improved by Au coating agent. However, It is suggested that the continuous study is required further investigation and development.
참고문헌 (32)
- Moffa JP, "An evaluation of nonprecious alloys for use with porcelain veneers. Part I: Physical properties", J Prosthet Dent, 30, pp.424~431 (1973)
- Bagby M, "Metal ceramic compatibility: A review of the literature", J Prosthet Dent, 63, pp.21~25 (1990)
- Robert KJ, "Nonprecious alloys for use in fixed prosthodontics; A literature review", J Prosthet Dent, 49, pp.363~370 (1983)
- Dent RJ, "Effect of oxidation on ceramometal bond strength", J Prosthet Dent, 47, pp.59~62 (1982)
- Lee KM, "SEM", EDS evaluation of porcelain adherence to gold-coated cast titanium, 2004, pp.68B, 165~173
- Sadeq A, "Effects of interfacial variables on ceramic adherence to cast and machined commercially pure titanium", J Prosthet Dent, 90, pp.10~17 (2003)
- Dand T, "Bond strength of porcelain on cast vs. wrought titanium", Scand J Dent Res, 100, pp.184~188 (1992)
- Cai z, "Porcelain adherence to dental cast CP titanium: effects of surface modifications", Biomaterials, 22(9), pp.979~986 (2001)
- Togaya T, "An application of pure titanium to the metal porcelain system", Dent Mater J, 2, pp.210~219 (1983)
- Kononen M, "Bonding of lowfusing dental porcelain to commercially pure titanium", J Biomed Mater Res, 28, pp.1027~1035 (1994)
- Yamamoto M, "The metal-ceramics", pp.110~ (1985), Quintessence
- Ohno H, "Structure of high temperature oxidation zone of gold alloys for metal-porcelain bonding containing small amount of In and Sn", J Dent Res, 62, pp.774~779 (1983)
- McLean JW, "Letter to the editor in reader’s round table", J Prosthet Dent, 31, pp.691~692 (1974)
- McLean JW, "The Metal-ceramic restoration", Dent Clin North Am, 27, pp.747~761 (1983)
- McLean JW, "The strength of metal ceramic bonds with base metal containing Cr", Brit Dent J, 132, pp.232~234 (1973)
- Isil zcan, "Effects of silicon coating on bond strength of two different titanium ceramic to titanium", Dent Mater, 21, pp.773~779 (2005)
- Russell R, "Silicon nitride coating on titanium to enable titanium-ceramic bonding", J Biomed Mater Res, 46, pp.262~270 (1999)
- Russell R, "Oxidation behavior of surface-modified titanium for titanium-ceramic restorations", J Prosthet Dent, 77, pp.423~434 (1997)
- Masayuki Okazaki, "Improvement of bond strength in metal ceramic systems using a gold intermediate layer", J Dent Mater, 17, pp.163~173 (1998)
- HerØ, "Gold-based bonding agents between palladium-alloys and ceramic veneer", Dent Mater, 3, pp.168~175 (1987)
- Knap FJ, "Study of bond strength of dental porcelain fused to metal", J Prosthet Dent, 45, pp.1047~1051 (1966)
- Ciftci Y, "Shear bond strength evaluation of different veneering systems on Ni-Cr alloys", J Prosthodont, 16, pp.31~36 (2007)
- Adachi M, "Oxide adherence and porcelain bonding to titanium and Ti-6Al-4V alloy", J Dent Res, 69, pp.1230~1235 (1990)
- Prbster L, "Threepoint bending strength of ceramics fused to cast titanium", Eur J Oral Sci, 14, pp.313~319 (1996)
- Saadet A, "Bond strength of three porcelains to two forms of titanium using two firing atmosphere", J Prosthet Dent, 84, pp.567~574 (2000)
- Vickery RC, "Nature of attachment forces in porcelain-gold systems", J Dent Res, 47, pp.683~689 (1968)
- Papazoglou E, "Porcelain adherence to high-palladium alloys", J Prosthet Dent, 70, pp.386~394 (1993)
- Papazoglou E, "Effects of dental laboratory processing variables and in vitro testing medium on the porcelain adherence of high-palladium casting alloys", J Prosthet Dent, 79, pp.514~519 (1998)
- Mackert JR, "The Relationship Between Oxide Adherence and Porcelain-Metal Bonding", J Dent Res, 67(2), pp.474~478 (1988)
- 박세영, "티타늄과 니켈-크롬 합금의 도재결합강도 비교", 대한치과보철학회지, 41(1), pp.89~98 (2003), 대한치과보철학회
- Shell JS, "Study of the bond between gold alloys and porcelain", J Dent Res, 41, pp.1424~1437 (1962)
- Vsquez VZC, "Evaluation of interface characterization and adhesion of glass ceramics to commercially pure titanium and gold alloy after thermal- and mechanical-loading", Dent Mater, 25, pp.221~231 (2009)