Volume 49, Issue S1 pp. 253-258
ORIGINAL RESEARCH
Open Access

Accuracy of the KontrolFlex AccuFile when used with the Root ZX electronic apex locator in vitro

Mia Tittle DDS

Mia Tittle DDS

Department of Endodontics, University of the Pacific Arthur A. Dugoni School of Dentistry, San Francisco, California, USA

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Craig A. Dunlap DDS

Corresponding Author

Craig A. Dunlap DDS

Department of Endodontics, University of the Pacific Arthur A. Dugoni School of Dentistry, San Francisco, California, USA

Correspondence

Craig A. Dunlap, University of the Pacific Arthur A. Dugoni School of Dentistry, 155 5th Street, San Francisco CA 94013, USA.

Email: [email protected]

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Raymond Scott DDS, MSD

Raymond Scott DDS, MSD

Department of Endodontics, University of the Pacific Arthur A. Dugoni School of Dentistry, San Francisco, California, USA

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Ana Arias DDS, MS, PhD

Ana Arias DDS, MS, PhD

Department of Conservative and Prosthetic Dentistry, School of Dentistry, Complutense University, Madrid, Spain

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Scott Davis BS

Scott Davis BS

Department of Endodontics, University of the Pacific Arthur A. Dugoni School of Dentistry, San Francisco, California, USA

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Ove Peters DMD, MS, PhD

Ove Peters DMD, MS, PhD

Department of Endodontics, University of the Pacific Arthur A. Dugoni School of Dentistry, San Francisco, California, USA

Oral Health Centre, University of Queensland, Herston, Queensland, Australia

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First published: 08 December 2022

Abstract

The aims of this study were to determine the efficacy of the KontrolFlex™ Accufile™ compared to the READY•STEEL™ Flexofile® using an electronic apex locator and to evaluate the instrument's design via scanning electron microscopy. Actual canal lengths of 30 extracted teeth were determined under magnification. An alginate model was used to determine experimental canal lengths with the Root ZX II apex locator (EAL) and size #10 Accufiles and Flexofiles. Differences between actual lengths and experimental lengths were compared with Student's t test. The average experimental lengths were short of the actual length by −0.10 mm (±0.34) and −0.12 mm (±0.16) for the Accufile and Flexofile, respectively with no statistical difference (p > 0.05). SEM images revealed similar non-cutting Batt tips and a square cross-section for the Accufile and triangular for the Flexofile. Both files provided similarly high levels of reliability when used with the Root ZX II EAL.

CONFLICT OF INTEREST

Dr. Peters serves as a consultant for Dentsply Sirona. The remaining authors deny any conflicts of interest related to this study. Partial funding was supplied by a grant from the American Association of Endodontists Foundation.

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