International Journal of Clinical Pediatric Dentistry

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VOLUME 10 , ISSUE 1 ( January-March, 2017 ) > List of Articles

Original Article

A Comparative Evaluation of Accuracy of New-generation Electronic Apex Locator with Conventional Radiography to determine Working Length in Primary Teeth: An in vivo Study

K Vidya Bhat

Keywords : Conventional radiograph, Electronic apex locator, Working length

Citation Information : Bhat KV. A Comparative Evaluation of Accuracy of New-generation Electronic Apex Locator with Conventional Radiography to determine Working Length in Primary Teeth: An in vivo Study. Int J Clin Pediatr Dent 2017; 10 (1):34-36.

DOI: 10.5005/jp-journals-10005-1403

License: CC BY-NC 4.0

Published Online: 01-12-2008

Copyright Statement:  Copyright © 2017; The Author(s).


Aims: The purpose of this study was to evaluate the accuracy of a new-generation electronic apex locator (iPex) to determine working length in primary teeth with or without root resorption as compared with the conventional radiographic method. Materials and methods: A sample of 30 primary posterior teeth which are indicated for pulpectomy were selected for the study. After obtaining the informed consent from the parents, local anesthesia was administered. Access cavity was prepared with no.10 round bur. Initial exploration of the canals was done with no.10 K-file. Pulp was extirpated with a barbed broach followed by thorough irrigation of the canals with 0.9% saline. Initially, working length was obtained with iPex (new-generation by Nakanishi International) apex locator using no. 10 K-file, which was then compared with conventional radiographic method (Ingle's method). Results: A total of 65 canals were available for the measurement. The data were analyzed using Statistical Analysis system and t-tests were carried out. There was no statistically significant difference found when using iPex apex locator for working length determination as compared with that of conventional radiographic method (p = 0.511). Conclusion: Working length determined by iPex apex locator is comparable with that of conventional radiographic method, hence, can be used as an alternative in determining the working length of primary teeth.

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  1. Katz A, Mass E, Kaufman AY. Electronic apex locator: a useful tool for root canal treatment in the primary dentition. J Dent Child 1996 Nov-Dec;63(6):414-417.
  2. Kim E, Lee S-J. Electronic apex locator. Dent Clin North Am 2004 Jan;48(1):35-54.
  3. Nelson-Filho P, Romualdo PC, Bonifacio KC, Leonardo MR, Silva RA, Silva LA. Accuracy of the iPEX multi-frequency electronic apex locator in primary molars: an ex vivo study. Int Endod J 2011 Apr; 44(4):303-306.
  4. Kielbassa AM, Muller U, Munz I, Monting JS. Clinical evaluation of the measuring accuracy of ROOT ZX in primary teeth. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2003 Jan;95(1):94-100.
  5. Bodur H, Odabas M, Tulunoglu O, Tinaz AC. Accuracy of two different apex locators in primary teeth with and without root resorption. Clin Oral Invest 2008 Jun;12(2):137-141.
  6. Silva EJ, Herrera DR, Souza-Junior EJ, Rosa TP. Evaluation of the multi frequency electronic apex locator Joyapex 5 in primary teeth. Eur Arch Paediatr Dent 2014 Feb;15(1):51-54.
  7. Neena IE, Ananthraj A, Praveen P, Karthik V, Rani P. Comparison of digital radiography and apex locator with the conventional method in root length determination of primary teeth. J Indian Soc Pedod Prev Dent 2011 Oct-Dec;29(4):300-304.
  8. Odabas ME, Bodur H, Tulunoglu O, Alacam A. Accuracy of an electronic apex locator: a clinical evaluation in primary molars with and without resorption. J Clin Pediatr Dent 2011 Spring;35(3):255-258.
  9. Mello-Mourna AC, Mourna Netto C, Araki AT, Guedes-Pinto AC, Mendes FM. Ex vivo performance of five methods for root canal length determination in primary anterior teeth. Int Endod J 2010 Feb;43(2):142-147.
  10. Dandempally A, Muppa R, Duddu MK, Bhupatiraju P, Nallanchakrava S. Formulating a regression equation for determination of working length in primary molars using apex locators: a clinical study. Eur Arch Paeditr Dent 2013 Dec;14(6):369-374.
  11. Angwaravong O, Panitvisai P. Accuracy of an electronic apex locator in primary teeth with root resorption. Int Endod J 2009 Feb;42(2):115-121.
  12. Oznurhan F, Unal M, Kapdan A, Ozturk C, Aksoy S. Clinical evaluation of apex locator and radiography in primary teeth. Int J Paediatr Dent 2015 May;25(3):199-203.
  13. Mente J, Seidel J, Buchalla W, Koch MJ. Electronic determination of root canal length in primary teeth with and without root resorption. Int Endod J 2002 May;35(5):447-452.
  14. Nguyen HQ, Kaufman AY, Komorowski RC, Friedman RC. Electronic length measurement using small and large files in enlarged canals. Int Endod J 1996 Nov;29(6):359-364.
  15. Elayouti A. The ability of Root ZX apex locator to reduce the frequency of overestimated radiographic working length. J Endod 2002 Feb;28(2):116-119.
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