Working length determination of root canal of young permanent tooth: An in vitro study

Abstract

Background:Determination of correct working length is one of the keys to success in endodontic therapy.Aim:The aim of this study was to evaluate the diagnostic efficacy of various methods to determine working length of root canal.Materials and Methods:Tactile method was assessed using digital radiography and compared with electronic method using apex locator. A total sample of 30 single rooted young permanent teeth the (mandibular first premolars) with matured apices were selected for the study. Access cavity preparation was carried out. Working length was measured by tactile method using digital radiography and electronic method using apex locator with no 15 K file. Actual working length was established by grinding of cementum and dentine from the root apex and was observed under stereomicroscope. Data was collected and statistical analysis was carried out with the help of SPSS-15.Results:The results of this study showed that there was a significant difference between tactile method assessed by digital radiography and electronic method using apex locator.Conclusion:Apex locator was found to be more reliable and accurate when compared with the actual length.

Electronic Apex Locator Versus Conventional R Adiograph; Determination of Working Length: A Prospective in-Vivo Study

“…16 As already stated that for WL the ideal location is apical constriction for treating root canal, which is at the distance of 0.5-1 mm from main foramen. 2 The results of the present study show that EAL is better than radiograph for locating the main foramen as well as a point between apical constriction and foramen. 17,18 CONCLUSION AND SUGGESTIONS It was concluded by the results of the present study that electronic apex locators (EALs) have significantly higher accuracy and reliability within 1-mm than radiographs.…”

N Vitrocomparison of the Accuracy of Two Apex Locators of Different Generations

“…Precise determination of the working length of the root canal is a key factor that affects the outcome of endodontic treatment (2,15,16). Treatment of root canal up to the apical constriction represents a risk that part of the diseased pulp tissue might remain in the apical region and lead to treatment failure (17,18).…”

“…The accuracy of apex locators is very important for the correct working length determination of the root canal, and thus for successful endodontic treatment (1,2). It is generally accepted that the endodontic treatment should be limited within the root canal (3,4).…”

Electronic Apex Locator Versus Conventional R Adiograph

“…Determination of precise working length (WL) is of great importance for achieving success in treating endodontic patients, to reduce the risk of inadequate cleaning of root canals or injury to periapical tissues due to over instrumentation, removal of necrotic tissues and precise preparation of canals become easy by working length in treatment of root canals. 1,2 WL is described as the distance between coronal point of reference and the end point where canal must be prepared and obturated. 3 Different approaches are practiced to determine WL including conventional or digital radiography, tactile sensation and presence of fluid on paper point.…”

“…distorted and magnifying issues in radiographs with correct position of root apices. 2,4 These techniques have sensitivity of exploring and interpreting, providing 2-dimensional image of a 3-dimensional structures, making unable to signify actual location on the bases of conventional radiographs. 5,6 Difficulty in making accurate WL increases when radiographs superimpose the root canal system due to its anatomy.…”