Clinical Results

Clinical results from the users of EdgeEndo.

Evaluation of the Amount of Root Canal Dentin Removed and Apical Transportation Occurrence after Instrumentation with ProTaper Next, OneShape, and EdgeFile Rotary Systems

Apr 13, 2020 | Studies, X7



The aim of this study was to evaluate the amount of root canal dentin removed and apical transportation occurrence after instrumentation of mesiobuccal canals of maxillary molars with ProTaper Next (PTN [Dentsply Maillefer, Ballaigues, Switzerland]), OneShape (OS [MicroMega, Besançon, France]), and EdgeFile (EF [Edge Endo, Albuquerque, NM]) rotary systems.


Twenty-seven mesiobuccal canals of maxillary molars were used. Canals were randomly divided into 3 groups for canal preparation: PTN, EF X3, or OS (n = 9 for each group). Micro–computed tomographic imaging was used to measure apical transportation (mm) and the volume of dentin removed (mm3). The amount of dentin removed was measured for the coronal portion and for the whole canal length. Superposition of pre- and postoperative cross-sectional apical slices were used to measure apical transportation at 1 mm from the apex; the differences were evaluated using the Kruskal-Wallis test and Wilcoxon analysis. The Spearman correlation coefficient was used to display the relationship between variables for each group. The significance level was set at P < .05.


The percentages of the amount of dentin removed on the coronal portion and the amount removed for the whole canal length were statistically similar between groups (P > .05). The average amount of apical transportation for the PTN, OS, and EF X3 were 0.197, 0.263, and 0.218 mm, respectively. Statistically, there were no significant differences between the 3 rotary instruments for apical transportation.


The amount of dentin removed for the coronal third portion and the whole canal length was similar for the PTN, OS, and EF X3 rotary instruments. Although there were differences in the sizes of apical enlargement, no apical transportation was observed in any of the instrumentation systems.

Click Here for the published JOE article.

Related Posts

The Relevance of Operative Torque and Torsional Resistance of Nickel-titanium Rotary Instruments: A Preliminary Clinical Investigation

Gianluca Gambarini, Gabriele Miccoli, Maurilio D’Angelo, Marco Seracchiani, Federico Valenti Obino, Rodolfo Reda, Luca Testarelli Department of Oral and Maxillo-Facial Sciences, “Sapienza" University of Rome, Rome, Italy Introduction The aim of the present study is to...

In Vivo Evaluation of Operative Torque Generated by Two Nickel-Titanium Rotary Instruments during Root Canal Preparation

Objectives This in vivo study evaluated the operative torque and preparation time of ProTaper NEXT (Dentsply Maillefer; Ballaigues, Switzerland) and EdgeFile X7 (EdgeEn-do; Albuquerque, New Mexico, United States) rotary systems during root canal prepa-ration of...

Torsional resistance of two nickel-titanium rotary instruments: A comparative study

This study explores how heat treatment less significantly influences (increasing or decreasing) torsional resistance when compared to the high increase in flexibility and fatigue resistance reported in many published articles. Moreover, torsional fracture occurs...

Differences in cyclic fatigue lifespan: WaveOne Gold vs EdgeOne Fire.

Differences in cyclic fatigue lifespan between two different heat treated NiTi endodontic rotary instruments: WaveOne Gold vs EdgeOne Fire. Gambarini G, Galli M, Di Nardo D, Seracchiani M, Donfrancesco O, Testarelli L. J Clin Exp Dent. 2019 July 1;11(7):e609-e613. *...

Cyclic Fatigue and Torsional Failure of EdgeTaper Platinum Endodontic Files at Simulated Body Temperature

Ahmed Jamleh, BDS, MSc, PhD, Amjad Alghaihab, DMD,Abdulmohsen Alfadley, BDS, MSc, FRCD(C), Hussam Alfawaz, BDS, MS, Abdullah Alqedairi, BDS, MS, and Khalid Alfouzan, BDS, MSEdIntroduction: The aim of this in vitro study was to compare the cyclic fatigue resistance and...

Mechanical Properties of Various Glide Path Instruments

Highlights •Cyclic resistance, torsional resistance, and bending stiffness of glide path files made of different alloys were compared using custom devices. •EdgeGlidePath made from heat-treated wire showed higher cyclic resistance than ProGlider and One G. •One G made...