Comparative Evaluation of Extrusion of Apical Debris in Primary Anterior Teeth using Two Different Rotary Systems and Hand Files: An Study.

BACKGROUND

The success of endodontic treatment depends on the chemomechanical preparation of the tooth. However, the debris produced during canal preparation may extrude through the apical foramen causing postoperative complications.

AIM

The aim of this study is to compare the apical debris extrusion during root canal preparation in primary anterior teeth using hand files, rotary ProTaper files, and rotary Kedo-S files.

MATERIALS AND METHODS

Forty-five freshly extracted primary canine with mature apices and a single canal were randomly divided into three groups for instrumentation as follows ( = 15): Group 1: hand files; Group 2: rotary ProTaper files; and Group 3: rotary Kedo-S files. Myers and Montgomery experimental model was used for this study. Apically extruded debris collected in a preweighed Eppendorf tubes was placed in the incubator at 70°C for 5 days. The weight of the debris collected was determined by subtracting the pre- and post-instrumentation weight of the Eppendorf tubes. The data collected were analyzed using the analysis of variance and Tukey's tests.

RESULTS

Hand files produced more apical debris extrusion than ProTaper and Kedo-S files ( < 0.05) while Kedo-S produced the least ( < 0.05).

CONCLUSION

All instrumentation systems cause apical debris extrusion. Kedo-S produced less apical debris extrusion when compared to the hand files and ProTaper files.