Influence of adhesive and thermal cycling on the bond strength of ceramic brackets to dental ceramic

Brazilian Journal of Oral Sciences

Heloisa Cristina Valdrighi¹  Mario Vedovello Filho¹  Ana Rosa Costa²  Lourenço Correr-Sobrinho²  Patricia de Fátima Fraga³  Ana Paula Terossi de Godoi⁴ 

[1] Fundação Hérminio Ometto UNIARARAS;Universidade Estadual de Campinas;Universidade Federal de Alfenas;Universidade de São Paulo;

关键词: Shear strength. Adhesives. Ceramics.;   

DOI  :  10.20396/bjos.v15i2.8648779

来源: DOAJ

【 摘 要 】

Aim: This in vitro study investigated the effect of the application of an adhesive, silane and thermal cycling (TC) on the shear bond strength (SBS) of ceramic brackets to feldspathic ceramic. Methods: 16 cylinders of feldspathic ceramic were etched with hydrofluoric acid and divided into four groups (n=4): G1 - silane, without TC; G2 – silane, with TC; G3 - adhesive, without TC; G4 - adhesive, with TC. One layer of silane was applied on the surface of cylinders in G1 and G2 e one layer of photo-activated adhesive Single Bond Universal was used in G3 and G4. Ceramic brackets were bonded using Transbond XT. The SBS data were subjected to two-way ANOVA and Tukey’s post hoc test (α=0.05). The Adhesive Remnant Index (ARI) was evaluated at 40× magnification. Results: Silane was more effective than adhesive on the SBS of the brackets to ceramic (p<0.05). TC decreased significantly the SBS values compared with the groups without TC (p<0.05). The ARI results showed predominance of score 0. Conclusions: Groups with silane showed higher SBS than groups with adhesive. TC influence significantly on the bond strength. Regarding ARI, score 0 predominated in all groups.

【 授权许可】

Unknown