Results showed that mechanical active irrigation reduces post-operative pain .
It improved debridement , canal/isthmus cleanliness .
It also improved delivery of irrigant up to working length .
Bacterial count was more with active irrigation , though not significant .
There is no effect on long-term periapical healing .
Conclusion It may be concluded that mechanical active irrigation devices are beneficial in reducing post-operative pain and improving canal and isthmus cleanliness during Endodontics
Objective Irrigant activation has been cl aim ed to be beneficial in in vitro and clinical studies .
This systematic review aims to investigate the clinical efficiency of mechanically activated irrigants and conventional irrigation .
Effect of continuous ultrasonic irrigation on postoperative pain in mandibular molars with nonvital pulps: a randomized clinical trial
AIM To evaluate via a r and omized clinical trial the effect of continuous ultrasonic irrigation ( CUI ) on  postoperative pain in m and ibular molars with nonvital pulps . METHODOLOGY Seventy m and ibular molars with nonvital pulps and apical periodontitis were treated endodontically using two different irrigation techniques . The patients were r and omly allocated to one of two groups , CUI ( n = 35 ) and syringe irrigation ( SI ) ( n = 35 ) . The CUI group received irrigant activation using a Proultra Piezoflow ultrasonic needle as the final irrigation protocol , whilst in the SI group , the final irrigation was performed using 27-gauge needle . All the patients were prescribed ibuprofen 400 mg to be taken every 8 h , if required . Postoperative pain using a visual analog scale and analgesic intake were recorded everyday for 7 days . Data were analysed using chi-Square , Mann-Whitney and multiple linear regression tests . RESULTS Mean postoperative pain was lower in the CUI as compared to SI group , but the difference was significant on the first day only ( P = 0.032 ) . The overall 24-h pain prevalence was 41.4 % . CUI had a lower incidence of pain ( 31.4 % ) as compared to the SI group ( 51.4 % ) , but the difference was not significant ( P > 0.05 ) . No significant difference was observed in analgesic consumption between the groups ( P > 0.05 ) . Regression analysis revealed a significant association of mean postoperative pain at 24 h with the irrigant protocol ( P = 0.017 ) and preoperative pain ( P = 0.000 ) . CONCLUSION A significant difference was observed between CUI and syringe irrigation on the first postoperative day following chemo-mechanical preparation . However , the benefit observed was not clinical ly relevant
Results showed that mechanical active irrigation reduces post-operative pain .
It improved debridement , canal/isthmus cleanliness .
It also improved delivery of irrigant up to working length .
Bacterial count was more with active irrigation , though not significant .
There is no effect on long-term periapical healing .
Conclusion It may be concluded that mechanical active irrigation devices are beneficial in reducing post-operative pain and improving canal and isthmus cleanliness during Endodontics
Objective Irrigant activation has been cl aim ed to be beneficial in in vitro and clinical studies .
This systematic review aims to investigate the clinical efficiency of mechanically activated irrigants and conventional irrigation .