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CC BY-NC-ND 4.0 · Eur J Dent 2021; 15(01): 020-026
DOI: 10.1055/s-0040-1714175
Original Article

Apically Extruded Debris following Programmed Over Instrumentation of Curved Canals with Three Nickel Titanium Rotary Instruments

Salwa Daoud Yammine 
1   Department of Restorative/Esthetic Dentistry and Endodontics, Faculty of Dental Medicine, Lebanese University, Campus Rafic Hariri, Hadath, Beirut, Lebanon
,
Edgard Antoine Jabbour 
1   Department of Restorative/Esthetic Dentistry and Endodontics, Faculty of Dental Medicine, Lebanese University, Campus Rafic Hariri, Hadath, Beirut, Lebanon
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Abstract

Objectives This in vitro study aimed to compare the amount of mixed and dried debris extruded with three endodontic NiTi (nickel–titanium) systems at three levels beyond the major apical foramen. The null hypothesis is that there would be no differences between the different rotary systems in terms of apically extruded debris.

Materials and Methods  Forty-eight roots of human extracted molars with 20 to 40-degrees curvature were divided randomly into three groups (n = 16) instrumented with ProTaper Next, BT RaCe, and WaveOne Gold, respectively. Instrumentation was performed at the major foramen and over instrumented 0.5 mm, 1.0 mm and 1.5 mm beyond. Irrigation was performed with sodium hypochlorite. Apically extruded debris was collected.

Results Comparison of mixed extruded debris (solution/debris)and dried debris according to group and level of instrumentation showed that WaveOne Gold at the foramen and ProTaper Next beyond the foramen (p < 0.0001) resulted in significantly less extruded debris than other files and within the four levels using repeated measures analysis of variance (p < 0.0001b).

Conclusions All systems exhibit extruded debris during instrumentation but in different amounts.

Keywords

apical debris extrusion - curved root canals - over instrumentation - reciprocating system - continuous rotation


Publication History

Article published online:
26 August 2020

© 2020. European Journal of Dentistry. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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