wave as a measuring current, the stability of the electrode increases, and the measurement can
be made with only one electrode, which is connected to the file (another electrode is connected to the dental chair). The Endocater is reported to be able to make a correct measurement in the presence of conductive fluids by using a file with a special coating, but this file cannot be applied in narrow canals. The coating is easily rubbed off in narrow canals, and
this occurrence interferes with the accuracy of the measurement.