Year: 2025
Type: article
Abstract: Background: The purpose of this study was to evaluate the microshear bond strength to lithium disilicate of four silane-containing universal adhesives (SUAs): Scotchbond Universal Adhesive (3M), Scotchbond Universal Adhesive Plus (3M), Clearfil Universal Bond Quick (Kuraray), and Universal Bond II (Tokuyama), with or without the use of a separate silane primer. Material and Methods: Lithium disilicate blocks (IPS e.max CAD, Ivoclar) were sectioned to create 4 equal partitions. Blocks were then crystallized and mounted in polyvinyl chloride (PVC) pipes. The blocks were steam cleaned, subjected to 5% hydrofluoric acid etch, rinsed, and prepared with or without silane application. Resin cement was applied to prepared blocks within standardized silicone tubing matrices and light-cured forming four resin cement specimens per block and twelve specimens per group (n=12). The dual-cure resin cement with and without the use of silane served as a positive and negative control, respectively. The tubing was removed and then the specimens were subjected to 500 thermocycles. The specimens were loaded perpendicularly in a universal testing machine with a shear force until bonding failure. The mean microshear bond strength was calculated per group and analyzed with ANOVA and Tukey's post hoc tests (alpha=0.05). Following testing, each specimen was examined to determine failure mode. Results: <0.0001) than all other SUAs. All the SUAs without the use of silane resulted in lower bond strength (except UB) compared to the typical clinical practice of the use of silane alone. Greater mixed and cohesive failures were observed with groups that used silane. Conclusions: Universal bonding agent, silane, lithium disilicate, bond strength.
DOI: 10.4317/jced.62011
Language: English
Subfield: Orthodontics
Field: Dentistry
Domain: Health Sciences
Open Access status: diamond
Funders: U.S. Air Force, 59th Medical Wing
OpenAlex ID: W4409021129