2017
DOI: 10.1590/0366-69132017633662095
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Efeito do tratamento de superfície na resistência de união entre porcelana e uma cerâmica à base de zircônia

Abstract: INTRODUÇÃOEmbora as próteses fixas metalocerâmicas sejam consideradas o "padrão ouro", as próteses totalmente cerâmicas vêm ocupando cada vez mais espaço no mercado devido à introdução na Odontologia da tecnologia CAD-CAM Efeito do tratamento de superfície na resistência de união entre porcelana e uma cerâmica à base de zircônia ResumoA substituição do metal utilizado como infraestrutura de restaurações protéticas pela cerâmica policristalina à base de zircônia tetragonal estabilizada por ítria (Y-TZP) result… Show more

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“…16,17 Under the failure pattern analysis, 2/3 of the specimens had adhesive-type failure and 1/3 of the specimens had mixedtype failure. The specimens that showed mixed cement and mixed ceramic failures prove better bonding properties than specimens with adhesive failures, as stated by Lodi, Marks e Borba 18 in their study, which had similarity in the values of bond resistance between the groups in the shear test, but there was a difference in failure mode.The group that presented higher cement/ceramic resistance obtained more frequency Restorations with this type of ceramic have multifactorial failure means and the evaluation methods presented provide partial data, since the oral cavity is a complex environment, being difficult to reproduce all its variables in a mechanical test with an in vitro research. It is important to emphasize that the technique for microshear testing is very sensitive and failures resulting from this can happen.…”
Section: Discussionsupporting
confidence: 57%
“…16,17 Under the failure pattern analysis, 2/3 of the specimens had adhesive-type failure and 1/3 of the specimens had mixedtype failure. The specimens that showed mixed cement and mixed ceramic failures prove better bonding properties than specimens with adhesive failures, as stated by Lodi, Marks e Borba 18 in their study, which had similarity in the values of bond resistance between the groups in the shear test, but there was a difference in failure mode.The group that presented higher cement/ceramic resistance obtained more frequency Restorations with this type of ceramic have multifactorial failure means and the evaluation methods presented provide partial data, since the oral cavity is a complex environment, being difficult to reproduce all its variables in a mechanical test with an in vitro research. It is important to emphasize that the technique for microshear testing is very sensitive and failures resulting from this can happen.…”
Section: Discussionsupporting
confidence: 57%