Revista de Odontologia da UNESP
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Revista de Odontologia da UNESP
Review Article

Tratamento de superfície e cimentação adesiva de cerâmicas aluminizadas: revisão de literatura

Surface treatment and adhesive cementing of glass-infiltrated Alumina ceramic: review of the literature

Aras, W.M.F.; León, B.L.T.

Rev. odontol. UNESP, vol.38, n2, p.93-98, 2009
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Abstract

Nas últimas décadas, as cerâmicas odontológicas, os sistemas adesivos e os agentes cimentantes têm sido estudados, objetivando encontrar novos mecanismos que permitam uma união mais efetiva e duradoura entre os tecidos dentários duros e a restauração indireta. Sabe-se que o procedimento de preparo para cerâmicas feldspáticas requer o condicionamento da sua superfície com ácido fluorídrico prévio à cimentação. Entretanto, para cerâmicas aluminizadas, em face das suas características estruturais, o condicionamento ácido não é indicado. Dessa maneira, a escolha do preparo de superfície e do sistema cimentante resinoso torna-se extremamente importante quando se almeja o sucesso do tratamento reabilitador. A presente revisão de literatura teve como objetivo buscar as bases científicas relativas às técnicas alternativas de tratamento superficial e aos agentes cimentantes para cerâmicas reforçadas. Para tanto, artigos publicados no período de 1998 a 2007 foram selecionados e analisados, permitindo aos autores concluírem que ainda não há consenso a respeito dos métodos alternativos de tratamento de superfície para os sistemas cerâmicos à base de alumina e da seleção de materiais cimentantes que, usados em conjunto, apresentem resistência de união plenamente satisfatória. Portanto, mais estudos são requeridos a fim de testar e compreender os mecanismos adesivos responsáveis pela estabilidade das restaurações indiretas a longo prazo.

Keywords

Cimentos dentários, porcelana dental, resistência à tração, resistência ao cisalhamento.

Resumo

In the last decades, the dental ceramics, the adhesive systems and luting agents have been studied, objectifying to find new mechanisms that allow to an a more effective and durable bond between the hard tissue dental and indirect restoration. It is known that the procedure of preparation for feldspathic ceramics requires the surface conditioning with hydrofluoric acid prior to cementing. Meanwhile alumina ceramics, in face of its structural features, the acid etching is not indicated. In this way, the choice of surface preparation and the resin luting system becomes extremely important when it seeks to successful rehabilitation treatment. The present review of literature had as objective to search cientific bases about alternative techniques of the surface treatment and luting agents for high-strength ceramics. For in such a way, articles published in the period 1998 to 2007 had been selected and analyzed, allowing to the authors to conclude that still there is not enough consensus and evidences, regarding the use of alternative methods of surface treatment for the ceramic-based alumina systems and the selection of luting materials that jointly present fully satisfactory strength bond. Therefore, further studies are required in order to test and to understand the responsible adhesive mechanisms by the stability of the indirect restorations in the long term.

Palavras-chave

Dental cements, dental porcelain, tensile strength, shear strength

References

 


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