Master cone fitting radiograph
N.B : Radiographic Apex: is the end of the root
Anatomical Apex: is the end of the canal
The distance between Radiographic Apex and Anatomical Apex could reach 3 mm
Apex Locator function is to determine the location of the Anatomical apex
So If there is a difference between the WL and the Radiographic apex.....
Always Trust Your Apex Locator....
Enjoy