Bailey, David, Anderson, Ryan, Brady, Kevin, Kwon, Peter, Browne, Daniel, and Rodrigues Amaral, Rodrigo (2024) An Ex-Vivo Study Comparing the Accuracy of the E-Connect S+ and Morita Tri Auto ZX2+ Endodontic Handpieces in Root Canal Length Determination. Journal of Endodontics, 50 (7). pp. 1004-1010.

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Abstract

Introduction: This ex vivo study evaluated the accuracy of the Electronic Apex Locator (EAL) and Automatic Apical Stop (AAS) functions of the E-Connect S+ and Morita Tri Auto ZX2+ cordless apex locators in determining patency length.

Methods: Sixty-four human teeth with a single root were randomly allocated into E-connect or Morita groups (n = 32). The canals were accessed and preflared, after which a size 15 K-file was inserted into the canal to the major foramen and recorded as the actual length (AL). Matched measurements were taken using the AAS and EAL functions and visually confirmed with confocal microscopy. The variance between canal length (mm), the persons correlation (ρ) between function and AL, and the accuracy (%) of the canal length relative to the AL (Δmm) between devices and functions were assessed.

Results: Regardless of device or function, all measurements were within 1±Δmm and correlated strongly (ρ > 0.97) with the AL. When considering a more stringent clinically acceptable range of 0.5±Δmm from the AL, all devices and functions demonstrated similar accuracy levels (84%–94%). However, at lower tolerance ranges, the E-connect device with the EAL function exhibited the highest accuracy. On average, all devices and functions stopped short of the AL (mean Δmm>0).

Conclusion: The E-Connect S+ and Morita Tri Auto ZX2+ apex locators provided reliable accuracy in determining the position of the major foramen. These findings demonstrate a high level of reproducibility in canal length measurements using both cordless endodontic handpieces, regardless of whether the EAL or AAS functions were employed.

Item ID:	82970
Item Type:	Article (Research - C1)
ISSN:	1878-3554
Copyright Information:	Copyright © 2024 American Association of Endodontists.
Date Deposited:	13 Aug 2024 07:09
FoR Codes:	32 BIOMEDICAL AND CLINICAL SCIENCES > 3203 Dentistry > 320304 Endodontics @ 100%
SEO Codes:	20 HEALTH > 2002 Evaluation of health and support services > 200202 Evaluation of health outcomes @ 100%
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