Influence of different modes of application of chlorexidine digluconate on bond strength of universal adhesive system to dentin

Abstract

The aim was to evaluate the influence of different modes of application of chlorhexidine digluconate in the preservation of bond strength of universal adhesive system to dentin. Teeth were divided into 3 groups: Distilled water: (control), CHX PT: pre-treatment with 2% chlorhexidine digluconate and CHX+SBU: 2% chlorhexidine digluconate incorporated into the adhesive system. All groups used the Universal adhesive system. After 24 hours, there was no statistical difference between the groups (p>0.05). After 6 months, a significant reduction in the bond strength of the control group was observed when compared to the CHX PT and CHX+SBU (p<0.05). The CHX PT and CHX+SBU maintained the bond strength over time as compared to the 24 hours values (p>0.05). It was concluded that the application of 2% chlorhexidine digluconate, through treatment or incorporated, maintained the bond strength of a universal adhesive system to dentin over time.