Bonding performance of universal adhesives with concomitant use of silanes to CAD/CAM blocks

• Main Authors: Marina AMARAL (Author), Jaqueline Maria Brandão RIZZATO (Author), Victoria Caroline Souza de ALMEIDA (Author), Priscila Christiane Suzy LIPORONI (Author), Rayssa Ferreira ZANATTA (Author)
• Format: Book
• Published: Faculdade São Leopoldo Mandic, 2023-06-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

ABSTRACT Objective: This study assessed whether the use of a silane coupling agent influence the bond strength of two universal adhesives to ceramic or resin CAD/CAM blocks. Methods: Forty-eight samples were obtained from each resin nano-ceramic hybrid block (RCBs) and lithium disilicate ceramic blocks (LD). Samples were treated with silane with MDP (Monobond - S-MDP), silane without MDP (Prosil - PS), and no silane application (Control - Ctr) followed by universal adhesive with silane (UAS) and without silane (UA) (n=8). Three polyurethane tubes (1.5 mm of internal diameter) were positioned in each sample treated surface and filled with a dual cured resin cement. Bond strength was assessed by microshear bond strength test and failure analysis was performed for all samples. Results: For the RCBs, UAS presented the highest bond strength values (p=0.004). Silane application was not significant in bond strength values (p=0.444). For LD, silane application was significant in bond strength values (p<0.001), but the adhesive was not (p=0.066). Failure analysis showed high prevalence of adhesive failures for both substrates. Conclusion: A silane-containing universal adhesive promoted the best bond strength results to the resin nano-ceramic hybrid block. For bonding to a glass-ceramic CAD/CAM material, additional silane (without MDP) application presented the best results.

Item Description

1981-8637
10.1590/1981-86372023002020220004