Disinfection of the root canal system is one of the main goals of endodontic treatment. To improve the action of irrigating solutions, different methods for irrigant activation have been developed, including ultrasonic irrigation.
A review published in 2025 analyzed clinical studies evaluating the use of ultrasonic irrigation during root canal treatment and its effect on the disinfection of the root canal system. In the included studies, this technique was compared with conventional irrigation performed with syringe and needle.
Study findings
The in vivo studies analyzed in the review mainly evaluated microbiological parameters within the root canal system.
The results suggest that ultrasonic irrigation may improve the reduction of bacteria and endotoxins within the root canal system compared with conventional irrigation.
The authors also indicate that the included studies showed differences in clinical protocols and evaluation methods, which may explain the variability of the reported results.
Clinical implications
According to the review, ultrasonic irrigation may improve the effectiveness and efficiency of root canal treatment.
Available clinical studies suggest potential advantages compared with conventional syringe irrigation, particularly regarding the disinfection of the root canal system.
However, the authors emphasize that additional high-quality clinical studies are required to more clearly confirm these benefits.