수종 합금의 도재 결합강도
Bond-strength of several metal-meramic alloys and meneered-porcelain
2
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
연구 목적: 본 연구는 여러 가지 금속-도재 합금의 도재결합강도를 측정하여 임상에 적용하는 것이 적절한 지 평가하고자 하였다. 연구 재료 및 방법: 금속도재소부 전장관으로 가장 많이 사용되는 Ni-Cr 합금(Group 1)과 75% 금합금(Group 2) 및 최근 도재 금 합금으로 판매되고 있는 52.5% (Group 3), 51.5% (Group 4), 32% (Group 5), 10% 금합금(Group 6)이 시편으로 제작되었다. 시편은 각각 5개씩 제작되었으며, 제작된 시편에 전용 도재를 소성하고 3점 굴곡 시험을 통하여 도재와 각 금속간의 결합강도를 측정하였다. 결과: Group 1의 도재 결합강도가 40.62 ± 3.32 MPa로 다른 실험군의 도재결합 강도에 비해 통계학적으로 유의성 있게 가장 높은 결합강도를 보였고(P<.05), 다음으로 Group 2가 37.47 ± 1.57 MPa, Group 3이 35.85 ± 1.48 MPa, Group 4가 35.04 ± 1.34 MPa, Group 5가 33.17 ± 1.62 MPa, Group 6가 30.75± 1.21 MPa 순으로 결합강도가 감소하였다. Group 2, 3, 4 의 도재결합 강도는 Group 6와 통계학적으로 유의성을 보여주고 있으나(Duncan’s test, P<.05), Group 3과 4는 Group 5와 서로 유의한 차이를 보이지 않았다(Duncan’s test, P>.05). 도재 결합 강도 차이는 금 함량이 높을수록 강도가 높았고, 모든 실험군에서 ISO 9693에서 제시하는 기준치(25 MPa)보다 높은 수치를 나타내었다. 결론: 실험에 포함된 모든 합금들이 임상적으로 사용 가능할 것으로 추정된다.
Abstract
PURPOSE: In this study, we evaluated the bond-strength between a few metal ceramic-alloys and veneered-porcelain and found if the bond strength of metal-ceramic alloy with lower gold content than the presently used gold alloy was high enough. MATERIALS AND METHODS: For this study, after plasticizing porcelain only for gold alloy, metal specimen was fabricated using Ni-Cr alloy and gold alloy with different gold content. Three point flexural test were performed to measure their bond-strength. RESULTS: The bonding strength of Group 1 to porcelain was 40.62 ± 3.32 MPa, which was the highest (P<.05). In sequence of decreasing value, Group 2 (75%) was 37.47 ± 1.57 MPa, Group 3 (52%) 35.85 ± 1.48 MPa, Group 4 (51.5%) 35.04 ± 1.34 MPa, Group 5 (32%) 33.17 ± 1.62 MPa, Group 6 (10%) 30.75 ± 1.21 MPa. Bonding strength of Group 3 and Group 4 to porcelain did not show statistically significant difference with comparison to that of Group 5 (Duncan’s test, P>.05), while there was a significant difference between that of Group 2, Group 3 and Group 4 and that of Group 6 (Duncan’s test, P<.05). The bonding strength between gold alloy and porcelain increased according to the content of gold. In all experimental groups showed higher value than 25 MPa, which is the least value recommended by ISO 9693. CONCLUSION: In all groups, bonding strength was higher than 25 MPa, which is the least value of ISO9693. Therefore, it is considered that metal gold alloy with low gold content is clinically usable.
참고문헌 (30)
- Bagby M, "Metal ceramic compatibility: a review of the literature", J Prosthet Dent, 63, pp.21~25 (1990)
- Dent RJ, "Effect of oxidation on ceramometal bond strength", J Prosthet Dent, 47, pp.59~62 (1982)
- Moffa JP, "Alternative dental casting alloys", Dent Clin North Am, 27, pp.733~746 (1983)
- Moffa JP, "An evaluation of nonprecious alloys for use with porcelain veneers. Part I. Physical properties", J Prosthet Dent, 30, pp.424~431 (1973)
- Kelly JR, "Nonprecious alloys for use in fixed prosthodontics: a literature review", J Prosthet Dent, 49, pp.363~370 (1983)
- Rosenstiel SF, "Contemporary Fixed Prosthodontics. 3rd ed", pp.488~512 (2001), Mosby
- "Dental ceramic fused to metal restorative materials. Draft International Standard", International Standard Organization (ISO), 1999
- Knap FJ, "Study of bond strength of dental porcelain fused to metal", J Dent Res, 45, pp.1047~1051 (1966)
- Shell JS, "Study of the bond between gold alloys and porcelain", J Dent Res, 41, pp.1424~1437 (1962)
- Anusavice KJ, "Delayed crack development in porcelain due to incompatibility stress", J Dent Res, 67, pp.1086~1091 (1988)
- Probster L, "Three-point bending strength of ceramics fused to cast titanium", Eur J Oral Sci, 104, pp.313~319 (1996)
- Atsu S, "Bond strength of three porcelains to two forms of titanium using two firing atmospheres", J Prosthet Dent, 84, pp.567~574 (2000)
- Yilmaz H, "Comparison of the bond compatibility of ti-tanium and an NiCr alloy to dental porcelain", J Dent, 27, pp.215~222 (1999)
- De′rand T, "Bond strength of porcelain on cast vs. wrought titanium", Scand J Dent Res, 100, pp.184~188 (1992)
- Pang IC, "Bonding characteristics of low-fusing porcelain bonded to pure titanium and palladiumcopper alloy", J Prosthet Dent, 73, pp.17~25 (1995)
- Wight TA, "An evaluation of four variables affecting the bond strength of porcelain to nonprecious alloy", J Prosthet Dent, 37, pp.570~577 (1977)
- Guinn JW 3rd, "The effect of cooling rate on the apparent bond strength of porcelain-metal couples", J Prosthet Dent, 48, pp.551~554 (1982)
- Schaffer SP, "An approach to determining the bond strength of ceramometal systems", J Prosthet Dent, 48, pp.282~284 (1982)
- Caputo AA, "A flexural method for evaluation of metal-ceramic bond strengths", J Dent Res, 56, pp.1501~1506 (1977)
- Anusavice KJ, "Comparative evaluation of ceramic-metal bond tests using finite element stress analysis", J Dent Res, 59, pp.608~613 (1980)
- Lenz J, "Bond strength of metal-ceramic systems in three-point flexure bond test", J Appl Biomater, 6, pp.55~64 (1995)
- Barghi N, "Optimum thickness of opaque and body porcelain", J Prosthet Dent, 48, pp.429~431 (1982)
- Adachi M, "Oxide adherence and porcelain bonding to titanium and Ti-6Al-4V alloy", J Dent Res, 69, pp.1230~1235 (1990)
- Kaus T, "Clinical follow-up study of ceramic veneered titanium restorations--three-year results", Int J Prosthodont, 9, pp.9~15 (1996)
- Kimura H, "Effects of retention and bonding agent on bond strength of the titanium porcelain system", J Osaka Uni Dent Sch, 31, pp.23~32 (1991)
- Hsu CC, "Effects of different ceramic firing cycles on cp Titanium-Ceramic flexural bond strength under cyclic fatigue loading", J Dent Res, 80(special) (2001)
- McLean JW, "Dental ceramics", pp.13~49 (1983), Quintessence
- Kvam K, "Fracture toughness and flexural strength of dental ceramics for titanium", Biomaterials, 16, pp.73~76 (1995)
- Esquivel JF, "The physical properties of lowfusing porcelains for titanium", Int J Prosthodont, 9, pp.563~571 (1996)
- Hautaniemi JA, "On the bonding of porcelain on titanium", J Mater Sci, 3, pp.186~191 (1992)