Bharat Kumar, Feroze Ali, Pooja Kumari, Imran Ali, Rajesh Kumar, Sarang Suresh.
Effect of Continuous Ultrasonic Irrigation on Postoperative Pain in Cases in Symptomatic Apical Periodontitis After Single Visit Endodontic Treatment.
Ann Pak Inst Med Sci Jan ;19(3):277-83.

Objective: To examine and evaluate the efficacy of Continuous Ultrasonic Irrigation (CUI) in comparison to Syringe Irrigation (SI) with regards to the reduction of postoperative pain. :  The clinical investigation was carried out at the Department of Operative Dentistry, Liaquat University of Medical and Health Sciences, Jamshoro, for a period of six months, starting from January 2021 and ending in June 2021. The study involved a total of 90 patients, and its objective was to assess pain levels experienced by the participants 24 hours and seven days after the surgical procedure. The Heft Parker Visual-Analogue Scale was utilized as the tool for pain measurement. Results: CUI yielded superior outcomes in terms of statistically significant postoperative pain reduction at the 24-hour when compared to syringe irrigation. Nevertheless, it was shown that syringe irrigation demonstrated more efficacy in mitigating postoperative discomfort on the seventh day. The findings also revealed statistically significant disparities in pain intensity between the two cohorts at the 24-hour mark and on the seventh day, with notable variations in pain levels based on gender.Conclusion: The efficacy of continuous ultrasonic irrigation in lowering postoperative pain was shown to be higher at the 24-hour mark, whereas syringe irrigation demonstrated greater effectiveness at the 7-day postoperative period.  

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