Revista de Odontologia da UNESP
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Revista de Odontologia da UNESP
Original Article

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.

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



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