Morphometric analysis of cleaning efficacy of ProTaper NEXT and Lightspeed LSX rotary system

Abstract

Aim: The aim of the study was to evaluate the cleaning efficacy of ProTaper NEXT and Lightspeed LSX rotary system by morphometrical analysis. Material and Methods: Ten extracted mesial roots of human mandibular molar teeth were randomly assigned in two groups ProTaper NEXT (Group I) and Lightspeed LSX (Group II). 3 serial transverse cross sections (5μm) at apical third were prepared and histologically processed. The cross sections were examined under optic microscope 100x magnification. The images were submitted to morphometrical analysis using Motic® software to determine the percentage of root canal area with debris and were analyzed statistically using Wilcoxon Rank Signed Test and one-way analysis of variance (ANOVA). Results: Percentage debris in group I (ProTaper NEXT) was less compared to group II (Lightspeed LSX) (p