IADR Abstract Archives
The Effect of Final Irrigation Activation Techniques on Canal Cleanliness
Objectives: The aim of this study was to evaluate the effect of different irrigation activation techniques on debridement efficacy and smear layer removal from the root canal.
Methods: A total of 52 single-rooted teeth were instrumented up to size #40 using ProTaper rotary instruments. They were randomly divided into 1 control group and 3 experimental groups (n=13) based on the final irrigant activation techniques: EndoVac system (EV), photon-induced photoacoustic streaming technique (PIPS), and conventional syringe irrigation (CSI). The presence of debris and smear layer was evaluated in the coronal, middle and apical third of the root canal by using a scanning electron microscope.
Results: PIPS resulted in significantly less debris in the middle third compared with CSI (p<0.01), although no significant difference was seen between EV and PIPS in the middle third (p>0.05). There were no statistically significant differences among CSI, EV and PIPS in terms of debris removal at coronal and apical levels (p>0.05). There were also no statistically significant differences in smear layer removal among CSI, EV and PIPS at all levels (p>0.05). All experimental irrigation techniques except control group removed smear layer and debris more effectively in the coronal and middle thirds compared to the apical third (p<0.01). All the experimental groups removed smear layer more effectively at the coronal level compared to the middle third (p<0.01). All the experimental groups except PIPS removed debris more effectively at the coronal level compared to the middle third (p<0.01). A significantly lower debris scores were obtained in the middle third when compared to coronal third in PIPS group (p<0.01).
Conclusions: None of the irrigation systems showed complete removal of debris and smear layer. EV, PIPS and CSI are almost comparable in their ability to remove debris and smear layer in single-rooted canal.
Methods: A total of 52 single-rooted teeth were instrumented up to size #40 using ProTaper rotary instruments. They were randomly divided into 1 control group and 3 experimental groups (n=13) based on the final irrigant activation techniques: EndoVac system (EV), photon-induced photoacoustic streaming technique (PIPS), and conventional syringe irrigation (CSI). The presence of debris and smear layer was evaluated in the coronal, middle and apical third of the root canal by using a scanning electron microscope.
Results: PIPS resulted in significantly less debris in the middle third compared with CSI (p<0.01), although no significant difference was seen between EV and PIPS in the middle third (p>0.05). There were no statistically significant differences among CSI, EV and PIPS in terms of debris removal at coronal and apical levels (p>0.05). There were also no statistically significant differences in smear layer removal among CSI, EV and PIPS at all levels (p>0.05). All experimental irrigation techniques except control group removed smear layer and debris more effectively in the coronal and middle thirds compared to the apical third (p<0.01). All the experimental groups removed smear layer more effectively at the coronal level compared to the middle third (p<0.01). All the experimental groups except PIPS removed debris more effectively at the coronal level compared to the middle third (p<0.01). A significantly lower debris scores were obtained in the middle third when compared to coronal third in PIPS group (p<0.01).
Conclusions: None of the irrigation systems showed complete removal of debris and smear layer. EV, PIPS and CSI are almost comparable in their ability to remove debris and smear layer in single-rooted canal.