Investigation of apex locators and related morphological factors

Journal of Endodontics
Jiangfeng DingHao Chen

Abstract

The purpose of this study was to investigate the ability of three electronic apex locators (EALs) to detect the minor foramen and morphological influencing factors relative to working length determination. Three hundred fifty-six extracted teeth were decoronated, and the coronal portion of the canal was flared. The distance between the major foramen and the file tips (DMFF) was determined by different EALs. The relationship between the DMFFs determined by the EAL and the morphological features of the root apex was analyzed by linear regression analysis. The average DMFFs were 0.261 mm, 0.376 mm, and 0.383 mm for the Root ZX (J. Morita, Kyoto, Japan), Raypex 5 (VDW, Munich, Germany), and Elements Apex Locator (SybronEndo, Anaheim, CA), respectively. The file tips determined by EALs were much closer to the major foramen in teeth with a "lateral major foramen" (p < 0.001). The area and diameters of the minor foramen were significantly related to the variation of the DMFFs determined by EALs. When the "minor foramen" reading was given, the file tip connected to the Root ZX was much closer to the major foramen than the other two EALs. The minor foramen's morphology and the major foramen's location were both important influencing fac...Continue Reading

References

Feb 1, 1995·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·C Kobayashi
Feb 1, 1993·Journal of Endodontics·A F FouadK V Krell
Jun 1, 1997·Endodontics & Dental Traumatology·N Meredith, K Gulabivala
Aug 1, 1997·Endodontics & Dental Traumatology·L Vajrabhaya, P Tepmongkol
Aug 7, 1998·Journal of Endodontics·G PagavinoT Baccetti
Jun 18, 1999·International Endodontic Journal·H F Ounsi, A Naaman
Jan 12, 2000·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·M K WuR E Walton
Aug 3, 2001·International Endodontic Journal·M A Martínez-LozanoC Llena-Puy
Apr 7, 2004·Dental Clinics of North America·Euiseong Kim, Seung-Jong Lee
Jun 11, 2004·International Endodontic Journal·M P J Gordon, N P Chandler
Nov 24, 2004·International Endodontic Journal·D Ricucci, K Langeland
Jun 28, 2005·Journal of Endodontics·Marat TselnikJ Gordon Marshall
Feb 4, 2006·International Endodontic Journal·W FanM W Fan
Jul 29, 2006·International Endodontic Journal·M H NekoofarP M H Dummer
Jan 19, 2007·International Endodontic Journal·K T WrbasJ F Schirrmeister
Jul 28, 2007·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Eduardo AkisueJose Antonio Poli de Figueiredo
Aug 21, 2007·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Ricardo Affonso BernardesClovis M Bramante
Sep 20, 2007·Journal of Endodontics·Manuela HerreraRafael Llamas
May 24, 2008·Journal of Endodontics·Benjamín Briseño-MarroquínBrita Willershausen
Sep 1, 2009·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Elizeu Alvaro PasconMarco Aurélio Versiani

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Citations

Oct 15, 2013·Medicina oral, patología oral y cirugía bucal·S MoscosoF Duran-Sindreu
Jul 17, 2012·Journal of Endodontics·Susana GomesFernando Duran-Sindreu
Jan 17, 2012·Journal of Endodontics·Fernando Duran-SindreuMiguel Roig
Sep 20, 2011·Journal of Endodontics·Eva Katia StöberFernando Duran-Sindreu
Aug 19, 2011·Journal of Endodontics·Lucila PiaseckiUlisses Xavier da Silva Neto
Jul 19, 2011·Journal of Endodontics·Elice ChenPeter Parashos
Apr 5, 2013·International Endodontic Journal·F Duran-SindreuM Roig
Oct 9, 2012·International Endodontic Journal·M J AltenburgerFrancesco Somma
May 24, 2011·International Endodontic Journal·V MileticV Ivanovic
Jun 19, 2013·International Endodontic Journal·C LucenaM P González-Rodríguez
Sep 24, 2014·Acta Odontologica Scandinavica·Yakup UstunOzgur Topuz
Jan 23, 2013·Brazilian Dental Journal·Matheus Lima OliveiraSolange Maria DE Almeida
May 23, 2015·The British Journal of Social Psychology·Hartmut BlankJochen Musch

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