Accuracy of electronic apex locator with different clinical conditions
Background and objective: Accuracy of working length determination is important in successful endodontic treatment. The aim of this study was to clinically compare working length determination in dry and wet canals with radiography and i- Root apex locater and in cases of presence or absence of peri apical lesion (An in vivo study).
Methods: This study was conducted in the Department of Endodontic in the College of Dentistry at Hawler Medical University, Erbil, Iraq. A total number of 45 single rooted teeth with single canals have been evaluated. An access cavity was then prepared and the pulp was extriped with barbed broach. Initial electronic measurements have been done under a wet condition; the root canals were rinsed with normal saline and then dried with paper points. i-Root TM apex locator had been used to estimate the working length. Each measurement was repeated three times and the mean value was calculated and computed. Then the K- file was selected for each tooth according to the size of each canal and peri apical radiograph had been taken to measure the length for each canal and compared with recorded length by apex locater. Statistically analysis included the used of paired sample t-test. A P value of ≤0.05 was considered statistically significant.
Results: There was no significant difference between working length determination by radiography and i-Root TM electronic apex locator in dry and wet canals and in case of presence or absence of peri apical lesion.
Conclusion: This study did not show any difference between radiography, i-Root TM and direct visualization in working length determination.
Ricucci D, Langeland K. Apical limit of root canal instrumentation and obturation, part 2. A histological study. Int Endod J1998; 31: 394-409.
Vieyra JP, Acosta J, Mondaca JM. Comparison of working length determination with radiographs and two electronic apex locators. Int Endod J 2010; 43(1):16-20.
Assunção DF, Albuquerque D, Ferreira D. The Ability of two apex locators to locate the apical foramen: An In Vitro Study. J Endod 2006; 32:6.
American Association of Endodontists (AAE). Glossary of Endodontic Terms; 7th edn. Chicago, IL: American Association of Endodontists; 2003.
Basmadjian-Charles CL, Farge P, Bourgeois DM, Lebrun T. Factors influencing the long-term results of endodontic treatment: A review of the literature. Int Dent J 2002; 52:81-6.
Kojima K, Inamoto K, Nagamatsu K. Success rate of endodontic treatment of teeth with vital and nonvitalpulps. A meta-analysis. J Endod 2004; 97:95-9.
Gordon MP, Chandler NP. Electronic apex locators. Int Endod J 2004; 37:425-37.
Sharma C, Arora M. Determination of Working Length of Root Canal. MJAFI 2010; 66(3):231-4.
Schaeffer MA, White RR, Walton RE. Determining the optimal obturation length: A meta-analysis of literature. J Endod 2005; 31:271- 4.
Suzuki K. Experimental study on iontophoresis. Jap J of Stomat 1942; 16:411-29.
Nekoofar MH, Ghandi MM, Hayes SJ, Dummer PMH. The fundamental operating principles of electronic root canal length measurement devices. Int Endod J 2006; 39:595-609.
Pratten D, McDonald NJ. Comparison of radiographic and electronic working lengths. J Endod 1996; 22:173-6.
Fouad AF, Reid LC. Effect of using electronic apex locators on selected endodontic treatment parameters. J Endod 2000; 26:364-7.
ElAyouti A, Weiger R, Lost C. The ability of root ZX apex locator to reduce the frequency of overestimated radiographic working length. J Endod 2002; 28:116-9.
Hoer D, Attin T. The accuracy of electronic working length determination. Int Endod J 2004; 37:125-31.
Kim E, Lee SJ. Electronic apex locator. Dent Clin North Am 2004; 48(1):35-54.
Dunlap CA, Remeikis NA, BeGole EA, Rauschenberger CR. An in vivo evaluation of an electronic apex locator that uses the ratio method in vital and necrotic canals. J Endod 1998; 24:48-50.
Lee SJ, Nam KC, Kim YJ, Kim DW. Clinical accuracy of a new apex locator with an autmatic compensation circuit. J Endod 2002; 28: 706-9.
Guise GM, Goodel GG, Imamura GM. In vitro comparison of three electronic apex locators. J Endod 2010; 36:279-81.
Nguyen H, Kaufman A, Komorowski R, Friedman S. Electronic length measurement using small and large files in enlarged canals. Int Endod J 1996; 29:359-64.
Kauffman AY, Keila S, Yoshpe M. Accuracy of a new apex locator: an in vitro study. Int Endod J 2002; 35:186-92.
Plotino G, Grande N, Brigante L, Lesti B, Somma F. Ex vivo accuracy of three electronic apex locators: Root ZX, Elements Diagnostic Unit and Apex Locator and ProPex. Int Endod J 2005; 39:408-14.
Zand V, Mokhtari H, Lotfi M, Reyhani M, Sohrab A, Tehranchi P. Accuracy of working length determination with root ZX apex locator and radiography: An in vivo and ex vivo study. Afr J Biotechnol 2011; 10(36):7088-91.
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