[1] Ricucci, D. and Langeland, K. (1998) Apical Limit of Root Canal Instrumentation and Obturation Part 2. A Histological Study. International Endodontic Journal, 31, 399-409.
[2] Nekoofar, M., Ghandi, M., Hayes, S. and Dummer, P. (2006) The Fundamental Operating Principles of Electronic Root Canal Length Measurement Devices. International Endodontic Journal, 39, 595-609.
http://dx.doi.org/10.1111/j.1365-2591.2006.01131.x
[3] Plotino, G., Grande, N., Brigante, L., Lesti, B. and Somma, F. (2006) Ex Vivo Accuracy of Three Electronic Apex Locators: Root ZX, Elements Diagnostic Unit and Apex Locator and ProPex. International Endodontic Journal, 39, 408-414.
[4] Dimitrov, S. and Dimitur, R. (2009) Sixth Generation Adaptive Apex Locator. Journal of IMAB-Annual Proceeding (Scientific Papers).
[5] Gordon, M. and Chandler, N. (2004) Electronic Apex Locators. International Endodontic Journal, 37, 425-437.
http://dx.doi.org/10.1111/j.1365-2591.2004.00835.x
[6] Jenkins, J.A., Walker Iii, W.A., Schindler, W.G. and Flores, C.M. (2001) An in Vitro Evaluation of the Accuracy of the Root ZX in the Presence of Various Irrigants. Journal of Endodontics, 27, 209-211.
http://dx.doi.org/10.1097/00004770-200103000-00018
[7] Real, D.G., Davidowicz, H., Moura-Netto, C., Zenkner Cd, L.L., Pagliarin, C.M.L., Barletta, F.B., et al. (2011) Accuracy of Working Length Determination Using 3 Electronic Apex Locators and Direct Digital Radiography. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 111, e44-e49.
http://dx.doi.org/10.1016/j.tripleo.2010.10.033
[8] Assuncao, F. (2010) Ex Vivo Evaluation of the Accuracy and Coefficient of Repeatability of Three Electronic Apex Locator Using a Simple Mounting Model: A Preliminary Report. International Endodontic Journal, 43, 269-274.
http://dx.doi.org/10.1111/j.1365-2591.2009.01674.x
[9] Madiyono, B., Moeslichan, S., Sastroasmoro, S., Budiman, I. and Purwanto, S. (2002) Perkiraan Besar Sampel. In: Sastroasmoro, S. and Ismael, S., Eds., Dasar-Dasar Metodologi Penelitian Klinis, Sagung Seto, Jakarta, 285.
[10] Walton, R. (2008) Diagnostic Imaging A. Endodontic Radiography. In: Ingle, J., Bakland, L. and Baumgartner, J.C., Eds., Endodontics, 6th Edition, People’s Medical Publishing House, 554-557.
[11] Vieyra, J., Acosta, J. and Mondaca, J. (2010) Comparison of Working Length Determination with Radiographs and Two Electronic Apex Locators. International Endodontic Journal, 43, 16-20.
http://dx.doi.org/10.1111/j.1365-2591.2009.01620.x
[12] Meredith, N. and Gulabivala, K. (1997) Electrical Impedance Measurement of Root Canal Length. Endodontics and Dental Traumatology, 13, 126-131.
http://dx.doi.org/10.1111/j.1600-9657.1997.tb00025.x
[13] Welk, A.R., Baumgartner, J.C., Marshall, J.G. (2003) An in Vivo Comparison of Two Frequency-Based Electronic Apex Locators. Journal of Endodontics, 29, 497-500.
http://dx.doi.org/10.1097/00004770-200308000-00002
[14] Huang, L. (1987) An Experimental Study of the Principle of Electronic Root Canal Measurement. Journal of Endodontics, 13, 60-64.
http://dx.doi.org/10.1016/S0099-2399(87)80156-5
[15] Javidi, M., Moradi, S., Rashed, R. and Raziee, L. (2009) In Vitro Comparative Study of Conventional Radiography and Root ZX Apex Locator in Determining Root Canal Working Length. The New York State Dental Journal, 75, 48-51.