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Related Experiment Video

Updated: May 22, 2026

$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

A comparison between two fourth generation apex locators.

L Comin Chiaramonti¹, M Menini, G Cavalleri

¹Section of Dentistry and Maxillo-Faccial Surgery, Surgery Department, University of Verona, Italy. l.comin-chiaramonti@libero.it

Minerva Stomatologica

|May 12, 2012

Summary

This summary is machine-generated.

The Bingo 1020 and Propex electronic apex locators demonstrated comparable accuracy in determining root canal length, with the Bingo 1020 showing slightly higher precision. Both devices provide reliable measurements for endodontic procedures.

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Area of Science:

Endodontics
Dental technology

Background:

Accurate determination of root canal length is crucial for successful endodontic treatment.
Fourth-generation electronic apex locators (EALs) are widely used to measure canal length.
Comparative accuracy studies of different EAL models are essential for clinical decision-making.

Purpose of the Study:

To evaluate and compare the ex vivo accuracy of two fourth-generation electronic apex locators: Bingo 1020 and Propex.
To assess the reliability of measurements obtained from these devices in an experimental setting.

Main Methods:

Forty permanent teeth with 62 canals were selected for ex vivo analysis.
Real canal length was determined using a stereomicroscope and digital caliper.
Accuracy of Bingo 1020 and Propex was evaluated using an experimental model with a digital comparator and an endodontic simulator.

Main Results:

The Bingo 1020 achieved an accuracy of 94.35% in positioning the file at ± 0.5 mm.
The Propex demonstrated a mean accuracy of 90.31% within ± 0.5 mm.
Both devices showed high accuracy in measuring root canal length.

Conclusions:

The Bingo 1020 and Propex electronic apex locators exhibit comparable accuracy.
Both devices provide reliable measurements for calculating root canal length in endodontic procedures.