Abstract:

Purpose: The purpose of this in vitro study is to evaluate the effect of the addition of various surface active agents to the EDTA solution on the resistance to the bonding to the root canal dentin of the epoxy resin. Tool and Method: Sixteen single roots of humans underlying little teeth crowns were removed. Root channels were formed using the rotating tool system. Examples were divided into four different groups (n=15) according to different EDTA (Wizard, Guide Chemistry, Istanbul, Turkey) solutions: Group 1: 17 % EDTA + 0.1 % benzalconium chloride; Group 2: 17 % EDTA + 0.1 % Tween 80; Group 3: 17 % EDTA + 0.1 % Triton X-100; and control group: 17 % EDTA without surface active agent. The surface voltage values of EDTA solutions were controlled by a tensiometer. Final irrigation was carried out with 5 mL 5% sodium hypochloride (Wizard) for 1 minute and then EDTA solution in the assigned group (5 mL; 1 minute). The root channels were filled with a cold lateral compression method and AH Plus shell (Dentsply DeTrey, Konstanz, Germany). By taking horizontal cuts from the root, the connection resistance between the root channel dentini and pat was measured by push-out test. The data was analyzed statistically using two-way variance analysis and post-master Tukey tests (p<0.05). Results: There was no difference between the EDTA groups and the control group where the surface active agents were added (p=0.106). In all groups, the push-out connectivity resistance was significantly higher than the apical triangle area in the coronal and middle triangle regions (relevantly p=0.004 and p=0.002). In the coronal and middle triangular regions, there was no statistically significant difference in connection resistance (p=0.979). The result: the addition of the surface active agent to the EDTA solution did not affect the binding resistance of the pot containing epoxy resin.

Keywords: