back to vol. 15, b. 2, 2009

Journal of IMAB - Annual Proceeding (Scientific Papers)
Publisher: Peytchinski, Gospodin Iliev
ISSN: 1312-773X (Online)
Issue: 2009, Volume 15, book 2
Subject Collection: Medicine
Page: 75-78
DOI: 10.5272/jimab.1522009_75
Online date: August 4, 2009,

Slavcho Dimitrov*,  Dimitur Roshkev**
*Department of Conservative Dentistry, Faculty of Dental Medicine, Medical Academy, Sofia; ** OPTIKA LASER /OPTICS LASER/, Sofia, Bulgaria

A comparative analysis is made which is grounded on literary data concerning the advantages and disadvantages of apex locators of various generations that have been created following two different principles /19, 28/. The PURPOSE of this study is to create a method and a device that combine the established advantages of fourth and fifth generation instruments.
While measuring the working length of the root canals of 30 extracted human teeth /dry and filled with animal blood and sodium hypochlorite/, experimental research work was carried out which has served as a basis for creating both a method and an adaptive apex locator that combine the advantages of the two previous generations of appliances.
The prolonged direct and juxtaposing studies have made it possible to create a steady algorithm for adapting the method for measuring the working length of the root canal depending on the canal’s moisture characteristics. The method has been implemented in the apex locator of the so called sixth generation – the adaptive type.
Measurement with the adaptive apex locator has made it possible to eliminate the necessity of drying or moistening of the canal, as well as to achieve high degree of measurement precision in the presence of blood, of additionally imported liquid /sodium hypochlorite/, or while manipulating dry canals.
Clinical observations are yet to come that will help assess the device’s ability to determine the working length of root canals under various clinical conditions and situations.

Key words: adaptive apex locator, working length.

Page: 75-78; FULL TEXT PDF (177 KB)

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