Análise comparativa da precisão e confiabilidade de dois localizadores eletrônicos foraminais: um estudo in vitro.

Abstract

Introduction: Currently, there is a range of electronic locators on the market and, as was to be expected, not all of these devices are accurate in determining the working length. Objective: To conduct a comparative analysis in vitro accuracy and reliability of two electronic apex locators, in determining the real length of the tooth. Methods: Was used 30 extracted teeth in the study. The real length of the tooth was measured with a K file Nº 10 until the appearance of its tip close to the foramen, observed with magnifying glass. For electronic measurement was used experimental basis filled with floral foam and soaked in sodium chloride 0.9%, in which the teeth were supported. The measurements were made with Novapex and Joypex 5 in triplicate by two calibrated examiners, both before and after preparation of the cervical third with Gates Glidden drills. The data were tabulated and analyzed using the t-Student and ANOVA one-way tests. Locators were classified into Accurate, Acceptable, and Erroneous. Results: The average odontometry the Novapex and Joypex before and after cervical ripening differ minimally from each other, with no statistically significant differences between them. The sum of accurate and acceptable scores for Novapex before and after cervical ripening was 79.9%, and the Joypex before the preparation was 76.66% and after 96.32, with no statistical differences between the same. Conclusion: Both locators were considered capable of accurately and reliably determine the length of the root canal.