The Effect Of Different Power Modes Of A Sonic Activation Device On Postoperative Pain After Single Visit Endodontic Treatment Of Acute Irreversible Pulpitis: A Randomized Clinical Trial

Abstract

Aim: This study aimed to investigate the effect of low, moderate and high power sonic energy levels on post-operative pain intensity and frequency of analgesic intake in acute pulpitis cases after single-visit root canal treatment.Materials and methods: 80 patients were randomly allocated into 1 control and 3 experimental groups according to the irrigant activation protocol with 20 patients per group as follows : negative control: without activation (side-vented needle only) , power mode "low", power mode "medium", and power mode "high". Canals were cleaned and shaped. 5 milliliters of 2.5% NaOCl were delivered by means of a side vented needle gauge 30 in the control group. For the experimental groups sonic activation was performed using a polyamide tip (6000 Hz; EDDY, VDW GmbH) connected to an air scaler (SONICflex, KaVo Dental GmbH, Biberach, Germany), 3 × 20 s, and the 5 ml of NaOCl were distributed into 4 milliliters for continuous irrigation during activation followed by 1 ml as a final rinse. Post-operative pain intensity was recorded after 6 hrs, 24 and 48 hrs using the VRS pain scale. Frequency of analgesic intake was also recorded. Statistical analysis was performed using Kruskal-wallis test followed by Mann-Whitney test.Results: Non-significant differences were found among the control and experimental groups regarding the pain intensity and incidence (P > 0.05). Analgesic intake frequency was also comparable among all groups. Both parameters were significantly higher after 6 hrs as compared to the values after 24 and 48 hrs, (P < 0.05). Conclusion:Irrigant activation using the 3 sonic power modes did not adversely affect postoperative pain levels in patients with acute irreversible pulpitis. Pain levels were significantly higher after 6 hrs than after 24 and 48 hrs.