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Postoperative pain after different irrigation activation techniques: a randomized, clinical trial
Mustafa Gündoğar1, Güzide Pelin Sezgin2, Sema Sönmez Kaplan2
1Faculty of Dentistry, Department of Endodontics, Medipol University, İstanbul, Turkey.
Odontology
|September 11, 2020
Summary
Irrigation activation techniques did not significantly reduce postoperative pain after root canal treatment. While some methods showed minor differences early on, pain levels decreased similarly across all groups within 24 hours.
Area of Science:
- Endodontics
- Dental Pain Management
- Minimally Invasive Dentistry
Background:
- Postoperative pain (PP) is a common concern following endodontic therapy for irreversible pulpitis.
- Effective pain management strategies are crucial for patient comfort and treatment success.
- Irrigation activation techniques aim to improve intracanal cleaning and disinfection, potentially influencing PP.
Purpose of the Study:
- To evaluate and compare the effectiveness of different irrigation activation techniques on postoperative pain in mandibular premolars with irreversible pulpitis after single-visit root canal treatment.
Main Methods:
- A prospective randomized clinical study included 160 patients with symptomatic irreversible pulpitis.
- Four irrigation groups were compared: needle irrigation (NI), EDDY sonic activation, EndoActivator (EA) sonic activation, and passive ultrasonic irrigation (PUI).
- Pain intensity and analgesic intake were recorded at 8, 24, 48 hours, and 7 days post-treatment.
Main Results:
- Highest postoperative pain was observed at 8 hours, with intensity decreasing over time in all groups.
- Needle irrigation (NI) showed significantly higher pain than EDDY at 24 hours (P < 0.05).
- EDDY, EA, and PUI demonstrated similar mild pain scores at 24 hours (P > 0.05), with no significant differences in analgesic intake among groups.
Conclusions:
- While minor differences in pain were noted at 24 hours, irrigation activation techniques did not significantly impact postoperative pain after 24 hours.
- Pain levels generally decreased across all groups following single-visit endodontic treatment.
- The choice of irrigation activation method may have limited influence on long-term postoperative pain management in this context.

