Comparison between apex locater and conventional radiography in working length determination of maxillary first molars: a clinical study
DOI:
https://doi.org/10.32828/mdj.v16i1.1021Keywords:
Apex locater, conventional radiograph, palatal canal, mesio-buccal canal, disto-buccal canal, apical foramenAbstract
Aim of the study: The purpose of this study is to compare the working length (WL) measurement results of conventional periapical radiographies and electronic apex locater (EAL).
Materials and method: This study was conducted during sessions of root canal treatment of 10 patients diagnosed with acute pulpitis. A total 30 root canals measurement (ten 1st upper molars, each with 1 palatal canal and 2 buccal canals) were included in the data analysis. A linear correlation and linear regression tests were utilized to check for a linear association between apex locator and X-ray measurements. Measurements of all roots were first included in the linear correlation test, and then measurements of each type of roots (palatal, mesio- buccal and disto- buccal) were tested separately. Significant linear correlations were then tested with linear regression test to formulate an equation which can predict X-ray measurements from corresponding apex locator measurements.
Results: Generally, apex locator shows a linear correlation with X-ray in terms of measuring working length of the root (P <0.001). The accuracy of apex locator varies according to the site of the tooth root under investigation, with being most accurate at disto-buccal (Pearson’s r= 0.98, P< 0.001) and least accurate at palatal roots (Pearson’s r=0.57, P=0.084).
Conclusion: Working length measurement of mesio-buccal and disto-buccal roots using electronic apex locater was precise when compared to radiographic method. While in palatal roots, WL measurements using apex locator were inaccurate when compared to radiographic method.
References
- Fouad AF, Reid LC (2000) Effect of using electronic apex locators on selected endodontic treatment parameters. Journal of Endodontics 26, 364–7.
- M. P. J. Gordon & N. P. Chandler. Electronic apex locators . 2004,International Endodontic Journal, 37, 425–437, 2004.
- Gevik Malkhassian, Andres Plazas, and Yosef Nahmias. Electronic Apex Locators and Conventional Radiograph in Working Length Measurement, Endodontic Radiology, Second Edition. Edited by Bettina Basrani. 2012 John Wiley & Sons, Inc. Published 2012 by John Wiley & Sons, Inc.
- Tamse,A., Kaffe, I., and Fishel, D. Zygomatic arch interference with correct radiographic diagnosis in maxillary molar endodontics.1980 Oral Surgery, Oral Medicine,and Oral Pathology, 50, 563–566.
- Custer C (1918) Exact methods for locating the apical foramen. Journal of the National Dental Association 5, 815–9.
- Suzuki, K. (1942) Experimental study on iontophoresis.Journal of Japanese Stomatology, 16, 411–429.
- Pilot, T.F. and Pitts, D.L. (1997) Determination of impedance changes at varying frequencies in relation to root canal file position and irrigant. Journal of Endodontics,23, 719–724.
- Saad, A.Y. and al-Nazhan, S. (2000) Radiation dose reduction during endodontic therapy: a new technique combining an apex locator (Root ZX) and a digital imaging system (RadioVisioGraphy). Journal of Endodontics, 26, 144–147.
- ElAyouti, A., Weiger, R., and Lost, C. (2002) The ability of root ZX apex locator to reduce the frequency of overestimated radiographic working length. Journal of Endodontics, 28, 116–119.
- Bramante, C.M. and Berbert, A. (1974) A critical evaluation of some methods of determining tooth length Oral Surgery, Oral Medicine, and Oral Pathology, 37,463–473.
- de Camargo, E.J., Zapata, R.O., Medeiros, P.L., Bramante,C.M., Bernardineli, N., Garcia, R.B., de Moraes, I.G.,and Duarte, M.A.H. (2009) Influence of preflaring on the accuracy of length determination with four electronic apex locators. Journal of Endodontics, 35,1300–1302.
- Ibarrola, J.L., Chapman, B.L., Howard, J.H., Knowles,K.I., and Ludlow, M.O. (1999) Effect of preflaring on Root ZX apex locators. Journal of Endodontics, 25,625–626.
- Pineda, F. and Kuttler, Y. (1972) Mesiodistal and buccolingual roentgenographic investigation of 7275 root canals. Oral Surgery, Oral Medicine, and Oral Pathology,33, 101–110.
- KM Nanda Kishor,Comparison of Working Length Determination using Apex Locator, Conventional Radiography and Radiovisiography, The Journal of Contemporary Dental Practice, July-August 2012;13(4):550-553
- Dr. Mohammed K. Gholam BDS, MSc., Comparison between apex locater and conventional radiography in working length determination of mandibular anterior teeth , MDJ Almustansiria University journal Vol.:4 No.:1 2007
- André Luiz Gomide de Morais , Ana Helena Gonçalves de Alencar , Cyntia Rodrigues de Araújo Estrela ,Daniel Almeida Decurcio , Carlos Estrela. Working Length Determination Using Cone-Beam Computed Tomography, Periapical Radiography and Electronic Apex Locator in Teeth with Apical Periodontitis: A Clinical Study André, IEJ Iranian Endodontic Journal 2016;11(3): 164-168
- Stabholz A, Rotstein I, Torabinejad M (1995) Effect of preflaring on tactile detection of the apical constriction.Journal of Endodontics 21, 92–4.
- Thomas AS, Hartwell GR, Moon PC (2003) The accuracy of the Root ZX electronic apex locator using stainless-steel and nickel-titanium files. Journal of Endodontics 29, 662–3.
- Krajczar, K., Marada, G., Gyulai, G., and Toth, V. (2008),Comparison of radiographic and electronical working length determination on palatal and mesio-buccal root canals of extracted upper molars. Oral Surgery, OralMedicine, Oral Pathology, Oral Radiology, and Endodontics,106,e90-e93
- Herrera, M., Abalos, C., Planas, A.J., and Llamas, R. (2007) Influence of apical constriction diameter on Root ZX apex locator precision. Journal of Endodontics, 33, 995–998.
- Sultan Al-shchri; Saad Al-Nazhan;Shreen Aouykry, Emad Al-Shwaimi, Raad-Sadhan,BaderAl-Shemmery.Root and canal configuration of maxillarymolar in Saudisubpopulation A cone-beam computed tomography study,Saudi Endodontic Journal,(original article), 2017, vol 7- issue:2 page69-76.
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This work is licensed under a Creative Commons Attribution 4.0 International License.
