Resumo

FILGUEIRAS, Reynaldo Porcaro; NAMEN, Fátima Maria  e  GALAN JUNIOR, João. Bond strength between zirconium ceramic and dual resinous cement. RGO, Rev. gaúch. odontol. (Online) [online]. 2010, vol.58, n.1, pp. 61-64. ISSN 1981-8637.

OBJECTIVE: To assess the influence of different surface treatments on the bond strength between the resinous cement Panavia F (Kuraray Co. Ltd., Osaka, Japan) and the structure of In-Ceram YZ (Vita Zahnfabrik, Bad Säckingen, Germany). METHODS: Fifteen ceramic blocks were assessed: Group 1, finishing with abrasive paper; Group 2, finishing, airborne Al₂O₃ particle abrasion and silanization; Group 3, finishing, airborne particle abrasion, silicatization and silanization. After treatment, the blocks received cementation of resin composite cylinders with Panavia F (Kuraray Co. Ltd., Osaka, Japan) and were submitted to the shear bond strength test in a universal testing machine. RESULTS: The results were statistically analyzed (ANOVA and multiple comparison Student-Newman-Keuls test): Group 1 (9.66 ± 1.67 MPa) < Group 2 (16.61 ± 3.38 MPa) = Group 3 (19.23 ± 5.69 MPa), with p = 0.007. CONCLUSION: The structures of the In-Ceram YZ system (Vita Zahnfabrik, Bad Säckingen, Germany) associated with Panavia F (Kuraray Co. Ltd., Osaka, Japan) require previous etching to achieve greater bond strength between the ceramic and cement, and this treatment may be performed with airborne particle abrasion I or traditional silicatization, both followed by silanization.

Palavras-chave : ceramics; dental ceramics; zirconium.