Author/Authors :
Nevares, Giselle Department of Operative Dentistry and Endodontics - Dental College of Pernambuco - University of Pernambuco - Camaragibe - PE, Brazil , Romeiro, Kaline Department of Operative Dentistry and Endodontics - Dental College of Pernambuco - University of Pernambuco - Camaragibe - PE, Brazil , Albuquerque, Diana Department of Operative Dentistry and Endodontics - Dental College of Pernambuco - University of Pernambuco - Camaragibe - PE, Brazil , Xavier, Felipe Department of Operative Dentistry and Endodontics - Dental College of Pernambuco - University of Pernambuco - Camaragibe - PE, Brazil , Fogel, Howard Division of Endodontics - College of Dentistry - University of Manitoba - Winnipeg - MB, Canada , Freire, Laila School of Dentistry - University of São Paulo - São Paulo - SP, Brazil , Cunha, Rodrigo Division of Endodontics - College of Dentistry - University of Manitoba - Winnipeg - MB, Canada
Abstract :
Introduction: To compare the apical extrusion of debris produced during root obturating
material removal from severely curved root canals using either Reciproc (REC) or ProTaper
Next (PTN) systems. Methods and Materials: Twenty-six mesial canals of lower molars
were instrumented, filled and allocated into two groups (n=13). Micro-computed
tomographic images were performed to determine the root canal configuration (Vertucci’s
type IV) and initial volume of obturation. One Eppendorf tube was assigned per canal and
weighed (10-4g) before and after removal of the obturating material. The difference
between the initial and final weights was calculated and statistically evaluated. Results:
Apical extrusion of debris was confirmed in all samples, and the mean amount of apical
extrusion was similar between both groups (0.061±0.014 g in PTN vs. 0.065±0.016 g in
REC samples) (P<0.05). Conclusion: Both systems caused apical extrusion of debris with
no differences between PTN and REC systems.
