Abstract:

The correct measurement of the working length is one of the most important factors which influence the success of the root canal treatment. The aim of this study is to compare the accuracy of working length determination using an electronic apexlocator and CBCT as a diagnostic tool. A total of 100 single-rooted teeth undergoing an endodontic treatment were examined clinically to determine their working length by an apexlocator, as well as the working length was measured on already existing CBCT-scans. The results of the study showed that the CBCT-scan has a similar accuracy to the apexlocator measurement regarding the working length determination, so a preexisting CBCT scan can be used for WL-determination in clinical cases, in which an apexlocator measurement cannot be considered reliable enough.

Keywords:  endodontic treatment, working length, CBCT, apexlocator