Efficacy of 4 surface treatments in increasing the shear bond strength of orthodontic brackets bonded to saliva-contaminated direct composites

An In Vitro Assessment of the Effects of Three Surface Treatments on Repair Bond Strength of Aged Composites

“…Findings regarding a specific brand should be cautiously generalized to other brands. 15 However, consistency between the results of this study and those of several other studies might confirm the advantage of silane usage regardless of the brand used. Moreover, during long-term water storage, specimens were not subjected to any occlusal loadings.…”

“…These differences might be attributed in part to the manufacturing and chemical composition details and the quality of different brands used in these studies. 15 …”

“…These results supported the findings of several previous studies showing that the application of silane and unfilled resins can improve bond strength, 22,36,41,[45][46][47] and contrasted with the results of some other studies reporting that the addition of silane to the bonding system might not significantly improve bond strength. 15,16 Controversy might be rooted in the different protocols and materials employed in these studies.…”

“…11 Li found that resinto-resin bond strength could be increased if the composite was primed with acetone, which is a component of many dentin bonding systems. 14 Several studies have shown that use of a silane agent or an intermediate bonding agent, or roughening of the surface of the aged composite, may considerably enhance the SBS of the repair bond, [15][16][17][18][19][20][21] although some authors have suggested that silane application might be unnecessary when a bonding agent is going to be used. 15,16 Nevertheless, some repair system kits composed of silane agents, monomers, and self-etching water-based primers and bonding agents have shown appropriate results compared with one-step primers or intermediate resins.…”

The effects of light curing units and environmental temperatures on CC conversion of commercial and experimental bonding agents

“…They are used in various clinical applications, such as repairing old composites, veneering laminates on composite restorations, and bonding orthodontic brackets (Jafarzadeh Khosravanifard et al, 2010Khosravanifard et al, , 2011a. Their use is strongly associated with their ability to prevent microleakage, secondary caries, sensitization, and restoration failure (Shafiei et al, 2013).…”