ACCURACY OF TWO ELECTRONIC APEX LOCATORS IN DETERMINING SIMULATED ROOT PERFORATION (IN VIRTO STUDY)

Abstract

Objective: to evaluate the influence of sodium hypochlorite 5.25% NaOCl and chlorohexidine 2% CHX irrigants on the accuracy of Root ZX mini and SIROEndo pocket apex locators in locating cervical and apical simulated root perforation. Materials and methods: Eighty recently extracted straight fully formed single rooted mandibular premolars, radiographically examined to confirm the presence of single patent canal. Using rotary diamond disc teeth will be decoronated below cemento-enamel junction to provide y access to the canal e and to obtain a constant reference point. The teeth specimens will be then divided into two groups (40 each) according to apex locators used (GROUP I): Root ZX mini apex locator (GROUP II): SIROEndo pocket apex locator Each group will be further classified into 2 subgroup (20 each) according to site of perforation: (Sub-group A): cervical perforation (Sub-group B): apical perforation. And each sub-group will be further classified into 2 subgroups (10 each) according to type of irrigant used: (Sub-group 1): NaOCl 5.25% (Sub-group 2): CHX 2%. Results: It was found that regarding to site of perforation: detection of apical perforation was statistically significant in comparison to coronal one, regarding to type of irrigant:it was found that in presence CHX of was statistically significant in comparison to in the presence of NaOCl and regarding to the efficacy of EALs: Root ZX mini apex locator was not statistically significant in detection of perforation in comparison to SIROEndo pocket apex locator. Conclusion: Both EALs were capable in detection of root perforation. Position of perforation affect the ease of its detection, Detection of perforation is more accurate in presence of CHX.