Evaluation of Correlation Between apical Diameter and File Size Using Propex Pixi Apex Locator

摘要

>Aim: Aim of this study is to evaluate the influence of critical diameter of apical foramen and file size using propex pixi apex locator in working length determination.>Materials and Methods: In this study, ten single rooted teeth were selected. They were decoronated at cemento enamel junction. After determining the actual working length, they were embedded in alginate mold. Foramina were widened from 0.6mm to 0.8mm. The measurements were taken with electronic apex locator propex pixi with files from sizes 10 K to respective sizes. Statistical accuracy of propex pixi was calculated by using Anova test for different diameters and for the influence of file size.>Results: Results showed that propex pixi apex locator was accurate when foramen diameter is 0.6 (60k file size), its accuracy diminished with increased foramen diameter>Conclusion: Propex pixi is accurate for foramen diameter of 0.6mm, independent of file size. Its accuracy decreases as apical foramen widens, so care should be taken when using clinically.