Effect of chlorhexidine on the shear bond strength of self-etch adhesives to dentin

Abstract

The aim of this study was to investigate the effect of chlorhexidine on shear bond strength of self-etch adhesives to dentin. The crowns of 60 sound human premolars were horizontally sectioned to expose the coronal dentin. Dentin surfaces were polished with 320 grit silicon carbide papers, and were randomly divided into 4 groups (n = 15). In group 1, two-step self-etch adhesive resin (Clearfil SE Bond) was used. In group 2, the surface was rinsed with chlorhexidine 2% solution prior to Clearfil SE bond application. In groups 3 and 4, the procedure was repeated similar to groups 1 and 2. In this case, onestep self-etch adhesive resin (Clearfil S3 Bond) was used. Then Z100 composite resin was applied. Subsequent to thermocycling, the shear bond strengths were measured. Data were analyzed using oneway ANOVA. In this study, p < 0.05 was considered significant. There were no significant differences between groups (p = 0.321). The use of 2% chlorhexidine had no effect on the shear bond strength of two-step and one-step self-etching adhesive resins. Moreover, there was no significant difference in the shear bond strength values between two-step and one-step self-etching adhesive resins.

Effect of Cavity Disinfectants on Dentin Bond Strength and Clinical Success of Composite Restorations—A Systematic Review of In Vitro, In Situ and Clinical Studies

“…Most of the studies reported results on the application of cavity disinfectant agents such as chlorhexidine [ 12 , 13 , 14 , 15 , 16 , 17 , 23 , 24 , 26 , 27 , 36 , 39 , 42 , 53 , 56 , 57 , 61 , 62 , 65 , 66 , 67 , 68 , 69 , 70 , 72 , 73 , 75 , 77 , 79 , 81 , 86 , 87 , 88 , 90 , 91 , 98 , 100 , 102 , 103 , 104 , 105 , 111 , 113 , 122 , 123 , 124 , 126 , 128 , 132 , 133 , 134 , 135 , 137 , 142 , 143 ,…”

“…Regarding its performance as a cavity disinfectant, chlorhexidine presented with positive results in the majority of the studies [ 16 , 17 , 24 , 36 , 39 , 42 , 53 , 56 , 57 , 61 , 62 , 65 , 66 , 67 , 68 , 69 , 72 , 73 , 75 , 77 , 79 , 81 , 86 , 87 , 90 , 91 , 98 , 100 , 102 , 103 , 104 , 105 , 111 , 113 , 122 , 123 , 124 , 128 , 132 , 134 , 135 , 137 , 142 , 143 , 148 , 153 , 157 ], allowing for maintenance or even an increase in bond strength values. On the other hand, a few authors [ 14 , 15 , 26 , 27 ,…”

“…It needs to be capable of correctly disinfecting the cavity but without compromising dentin bond strength. Its effect depends on each disinfectants characteristics but also on the type of substrate, adhesive system and restorative material used [ 90 , 108 , 126 ].…”

Effect of Different Cavity Disinfectants on Adhesion to Dentin of Permanent Teeth

“…A cavity disinfectant’s effect depends on each disinfectant’s characteristics, as well as on the type of substrate and materials used for the restorative procedure. Besides its biocompatibility and antibacterial action, each disinfectant should also be able to effectively disinfect the cavity without affecting bond strength values and the dentin–resin bonding interface [ 13 , 14 ].…”