New electronic apex locator Romiapex A-15 presented accuracy for working length determination in permanent teeth

Authors

  • Etevaldo Matos Maia Filho School of Dentistry of Ceuma University
  • Cláudia de Castro Rizzi School of Dentistry of Ribeirao Preto
  • Daniela Silva Barroso de Oliveira School of Dentistry, University of São Paulo
  • Paulo Nelson Filho School of Dentistry of Ribeirão Preto
  • Raquel Assed Bezerra da Silva School of Dentistry of Ribeirão Preto
  • Léa Assed Bezerra da Silva School of Dentistry of Ribeirão Preto

DOI:

https://doi.org/10.5195/d3000.2014.26

Keywords:

electronic apex foraminal, working length determination, endodontics

Abstract

Purpose: The present study aims to evaluate, ex vivo, the accuracy of electronic apex locators Root ZX II and Romiapex-15, for working length (WL) determination in permanent teeth. Materials and Methods: Fourteen single-rooted teeth (incisors and canines), with their apices fully formed were used. The dental crowns were removed. The anatomic length of the tooth (real measurement) was visually determined through the insertion of a size 10 K-file until the tip of the instrument could be observed in the apical foramen under a microscope (20X). Teeth were fixed in a model of resin and adapted into alginate soaked with saline solution, which was used as an  electrical conductor. Using a K-file, root canals were measured electronically using both devices. The results obtained for each apex locator were compared to the real measurements. The accuracy between the devices was statistically analyzed using the Bland-Altman graph, Intraclass Correlation Coefficient (ICC), and Student’s t-test. Results: The mean difference between the measurements using the Root ZX II was 0.277mm greater than the real measurement, while the measurements from the Romiapex-15 were 0.308mm higher on average. The comparison between Root ZX II and Romiapex-15 had no significant difference (p= 0.868). Conclusion: It was concluded that Root ZX II and Romiapex-15 had similar accuracy. Romiapex-15 could be an option for WL determination in permanent teeth.

Author Biographies

Etevaldo Matos Maia Filho, School of Dentistry of Ceuma University

Aluna de Doutorado

Faculdade de odontologia de Ribeirão Preto

Universidade de São Paulo

Daniela Silva Barroso de Oliveira, School of Dentistry, University of São Paulo

Department of Paediatric Dentistry

Paulo Nelson Filho, School of Dentistry of Ribeirão Preto

Department of Pediatric Dentistry

Raquel Assed Bezerra da Silva, School of Dentistry of Ribeirão Preto

Department of Pediatric Dentistry

Léa Assed Bezerra da Silva, School of Dentistry of Ribeirão Preto

Department of Pediatric Dentistry

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Published

2014-12-18

Issue

Vol. 2 No. 1 (2014)

Section

Infancy & Adolescence

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