Shear bond strength be of ceramic systems and Ni-Cr-based Alloys containing or not beryllium
Shear bond strength be of ceramic systems and Ni-Cr-based Alloys containing or not beryllium
Dekon, S.F.C.; Zavanelli, A.C.; Resende, C.A.; Martins, L.R.M.
Rev. odontol. UNESP, vol.34, n1, p.25-30, 2005
Resumo
O objetivo deste estudo foi avaliar a resistência da união metal/cerâmica entre duas ligas à base de Ni-Cr (com ou sem Be) e três sistemas cerâmicos por meio de um teste de cisalhamento. Diante dos resultados (kgf) analisados estatisticamente pelo teste ANOVA e, posteriormente, pelo Tukey a 5%, foi possível concluir que: o sistema cerâmico Williams associado à liga Durabond apresentou os maiores valores de resistência ao cisalhamento (59,78), diferindo estatisticamente dos demais sistemas avaliados (P < 0,05); não houve diferença estatisticamente significante entre os grupos confeccionados pela associação dos sistemas metal/cerâmica Durabond/ Vita VMK (53,39), Litecast/Vita VMK (53,21) e Litecast/Willians (46,58) (P > 0,05); o sistema cerâmico Noritake apresentou os menores valores de resistência ao cisalhamento independente da liga utilizada (Durabond/Noritake - 32,36; Litecast/Noritake - 30,09) (P < 0,05).
Palavras-chave
Resistência de união, liga metalocerâmica
Abstract
The aim of this study was to evaluate the bond strength metal/ceramic between two Ni-Cr –based alloys (with or without beryllium) and three ceramics systems using a shear test. In front of results (kgf) analyzed statistically by ANOVA test and, subsequently by Tukey’s test 5%, was possible concluded that: for Williams ceramic system associate to Durabond alloy showed the greatest values of shear bond strength (59.78), differing statistically of the others systems evaluated (P < 0.05); there isn’t difference statistically significant among the groups manufacturing by association to metal/ceramic systems Durabond/Vita VMK (53.39), Litecast/Vita VMK (53.21) e Litecast/Willians (46.58) (P > 0.05); the Noritake ceramic system showed the least values of shear bond strength independent of alloy used (Durabond/Noritake - 32.36; Litecast/ Noritake - 30.09) (P < 0.05).
Keywords
Bond strength, metal ceramic-alloys
References
1. Anthony DH, Burnett AP, Smith DL, Brooks MS. Shear test for measuring bonding in cast gold alloy-porcelain composite. J Dent Res. 1970; 49:27-33.
2. Bezzon OL, Mattos MGC, Ribeiro R, Rollo JMDA. Effect of beryllium on the cast ability and resistance of ceramometal bonds in nickel-chromium alloys. J Prosthet Dent. 1998; 80:570-4.
3. Bezzon OL, Ribeiro RF, Rollo JMA, Crosara S. Castability and resistance of ceramometal bonding in Ni-Cr and Ni-Cr-Be alloys. J Prosthet Dent. 2001; 85:299-304.
4. Caputo AA, Dunn B, Reisbick MH. A flexural method for evaluation of metal-ceramic bond strength. J Dent Res. 1977; 56:1501-6.
5. Carpenter M, Goodking RJ. Effect of varying surface texture on bond strength of one semiprecious and one nonprecious ceramo-alloy. J Prosthet Dent. 1979; 42:86- 95.
6. Chiodi Netto J. Avaliação da resistência de união da porcelana aplicada sobre liga de Ni-Cr e sobre solda [Tese Livre-Docência]. Bauru: Faculdade de Odontologia da USP; 1981.
7. Civjan EF, Huget EF, Simon LB, Risinger RJ. Determination of apparent bond strength of alloy-porcelain systems. J Dent Res. 1974; 53:240.
8. Dekon S. Avaliação da resistência de união metalocerâmica em função de diferentes ciclos de oxidação prévia [Dissertação Mestrado]. Bauru: Faculdade de Odontologia de Bauru da USP; 1994.
9. Jochen DG, Caputo AA, Matyas J. Effect of opaque porcelain application on strength of bond to silver-palladium alloys. J Prosthet Dent. 1990; 63:414-8.
10. Landez C. Le point de vue du céramiste. Actual Odontostomatol. 1975; 109:36-53.
11. Lavine MH, Custer F. Variables affecting the strength of bond between porcelain and gold. J Dent Res. 1966; 45:32-6.
12. Lerman Y, Schwarz Y, Kaufman G, Ganor E, Fireman E. Case series: use of induced sputum in the evaluation of occupational lung diseases. Arch Environ Health. 2003; 58:284-9.
13. McLean JW. The metal-ceramic restoration. Dent Clin North Am. 1983; 27:747-61.
14. Riley EJ. Ceramo-metal restoration state of the science. Dent Clin North Am. 1977; 21:669-82.
15. Shell JS, Nielsen JP. Study of bond between gold alloys and porcelain. J Dent Res. 1962; 41:1424-37.
16. Wataha JC, Lockwood PE, Noda M, Nelson SK, Mettenburg DJ. Effect of tooth brushing on the toxicity of casting alloys. J Prosthet Dent. 2002; 87:94-8.
17. Wu Y, Moser JB, Jamenson LM, Malone WFP. The effect of oxidation heat treatment on porcelain bond strength in selected base metal alloys. J Prosthet Dent. 1991; 66:439-44.
18. Yamamoto M. Metal-ceramics principles and methods of Makoto Yamamotto. Chicago: Quintessence; 1985.
Facebook
Google+
Twitter
LinkedIn
Mendeley
StumbleUpon
CiteULike
Reddit
Email