Effect of dopamine pretreatment on root canal bonding with AH-plus sealer

Abstract

Objective To observe the effect of dopamine pretreatment of the root canal on improving the bonding performance of AH-plus sealer. Methods A total of 32 freshly isolated permanent teeth with a single canal were collected, with no caries, no fracture of roots, and a root canal curvature0.05). Root canals treated with 2 mg/mL dopamine had the highest bonding strength in all groups (P<0.05). Analysis of the push-out test of bonding strength with AH-plus sealer at different anatomical locations showed significant differences (P<0.05). The push-out bonding strength of the AH-plus sealer in the middle third section of the root was higher than that in the apical third section of the root. Conclusion Different dopamine concentrations could affect the bonding strength of AH-plus sealer in root canals. When treated with 2 mg/mL dopamine for 24 hours, the bonding effect of AH-plus sealer in root canals was improved.

Keywords

• ah-plus sealer，
• dopamine，
• dentinal tubules，
• bonding strength，
• microleakage，
• root canal filling quality，