Title: 2503 - Torsional Resistance of EdgeTaper Platinum and EdgeOne Platinum Endodontic Instruments


Ahmed Jamleh, King Saud bin Abdulaziz University for Health Sciences
Amjad AlGhaihab (Presenter)
King Saud bin Abdulaziz University for Health Sciences

Abdelmohsen Alfadley, King Saud bin Abdulaziz University for Health Sciences
Khalid Alfouzan, King Saud bin Abdulaziz University for Health Sciences


Objectives: The aim of this study is to study the torsional resistances of EdgeTaper Platinum (ETP) and EdgeOne Platinum (EOP) systems, and compare them to ProTaper Gold (PTG) and WaveOne Gold (WOG), respectively.

Methods: Four brands of NiTi rotary instruments were elected: ETP (EdgeEndo, Albuquerque, NM), EOP (EdgeEndo, Albuquerque, NM), PTG (Dentsply Sirona, Ballaigues, Switzerland) and WOG (Dentsply Sirona, Ballaigues, Switzerland). Each group had 12 new files of size 25 (F2 and Primary) and 25-mm length. Five millimeters of each file tip of was firmly secured with DuraLay resin, and uniform torsional stress was applied at 40 rpm under simulated body temperature (37±1 C) until fracture occurred. The torque at failure was recorded. Since the data are normally distributed (Shapiro-Wilk test; p=0.345) and the variances are unequal (Levene’s test; p=0.02), ANOVA and Games-Howell tests were performed at 5% significance level.

Results: At simulated body temperature, PTG instruments demonstrated significantly the highest torsional resistance followed by ETP, WOG and EOP (Table 1). In comparison with PTG, ETP had a comparable torsional resistance (p=0.07). Whilst EOP showed significantly lower torsional resistance than that of WOG (p=0.00).

Conclusions: ETP and EOP did not show improved torsional resistance compared to their counterparts; PTG and WOG, respectively.


Group (n=12) Torque at Failure
ProTaper Gold
EdgeTaper Platinum
WaveOne Gold
EdgeOne Platinum

Student Presenter

This abstract is based on research that was funded entirely or partially by an outside source:
King Abdullah International Medical Research Center and National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia.(RC/17/212/R)

Disclosure Statement:
The submitter must disclose the names of the organizations with which any author have a relationship, the nature of the relationship, and the clinical or research area involved. The following is submitted: NONE