A comparison of the debris removal effects from apical area between apical negative pressure irrigation and conventional needle irrigation
HAO Yu-hong
LIN Xuan-dong
LONG Jin-dong
QIN He-jia
XIE Fang-fang
Abstract：AIM:To evaluate the efficacy of apical negative pressure irrigating system and conventional needle irrigation method in removing debris from root canals.METHODS:The canals of 20 extracted premolars with single canal,were instrumented with ProTaper Universal system and irrigated with 52.5 g/L NaCLO and 170 g/L EDTA.Then the teeth were randomly divided into 2 groups (n =10).During root canal preparation,the canals in CN group were irrigated using a 31-gauge irrigation needle,in NP group with a series of apical negative pressure irrigation needles..After root canal preparation,all teeth were decalcified,embedded,serial sections were prepared at 1 mm from the apical level and examined by HE staining,the debris removal was evaluated by image analysis.RESULTS:At 1 mm from anatomical apex,the debris removal efficacy of NP group and CN group was 99.34％ and 97.83％ respectively(P ＜0.05).CONCLUSION:Apical negative pressure irrigation is more effective in debris removal than conventional needle irrigation.
Keywords：root canal irrigationconventional needle irrigationapical negative pressure irrigationcleanliness of apical area
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 93-95,118 )