ارزيابي مقايسه اي دستگاه APEX. FINDER (آپكس ياب ) و راديوگرافي درتعيين طول كانال ريشه دندان INVIVO

Clinical evaluation of Apex Finder and radiography in determination of root canal length (invivo)

Aim: Determining and remaining within the confines of the working length of the root canal during instrumentation are recurrent problems in endodontics. Currently, electroniv apex locators are being used to determine working length and hence, decrease the number of radiographs taken. The purpose of this study is to compare clinicaly the radiography and an electronic apex locator "apex finder". Method & Material: In this invitro study, 140 root canal (in 99 teeth), were measured by the apex-finder and then radiographed. The working lenghts obtained by the apex-finder and those obtained by radiographs were recorded and compared. In addition, this study was undertaken to evaluate the influence of intracanal conditions (dryness or wetness), pulp and periapical status, patientʹs age and type of teeth, on the root canal length measurements. Results: In 79.3% of the root canals (at least in one of dry or wet conditions), the apex - finder measurements were within ±0.5 mm of the radiographic findings. Furthermore, intracanal conditions have influenced the validity of findings, but not the other factors. Conclusion: Apex finder with good accuracy is useful for determining working length of the root canal in pregnant women, disorder muscle patent with complex root anatomy. Application of this apex finder recommend for determining canal length.