Post-obturation pain and overextension of root canal filling materials following the use of the ah plus and iroot sp sealers a randomized controlled clinical trial

The aim of this study was to evaluate and compare postoperative pain and overextension of root canal filling after root canal treatment using a carrier-based obturation system and two different sealers. In this prospective randomized clinical trial, 160 premolars and molars in mandibula were treated. Patients with vital and devital teeth were assigned to four groups using a randomized block design with block sizes of 10 patients each. The groups were composed of devital teeth treated with iRoot SP sealer, vital teeth treated with iRoot SP sealer, devital teeth with treated with AH Plus sealer, and vital teeth treated with AH Plus sealer. In single visits, a single operator prepared root canals and filled them with sealer using the carrier-based obturation technique. Radiographs were taken and obturation length was recorded. Patients recorded pain scores using of Visual Analogue Scale and frequency of analgesic intake at baseline and 0–6, 6–12, 12–24, and 24–72 h. Categorical variables were compared among groups using the chi-squared test. Multiple group comparisons were performed using one-way analysis of variance (ANOVA) with the Bonferroni test. Repeated-measures ANOVA was used to evaluate changes in pain scores over time. For all tests, p<0.05 was significant. The incidence of postoperative pain during the 72 h study period did not differ among groups. Analgesic intake was significantly greater in the vital teeth treated with AH Plus sealer group than the other groups at 0–6 and 6–12 h (p<0.05). The extrusion rate of root canal material was not statistically significant. Although the use of different sealers did not significantly affect pain levels following root canal obturation, the iRoot SP sealer was associated with less analgesic intake than was the AH Plus sealer.