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  • Title: An in vivo evaluation of Endex electronic apex locator.
    Author: Frank AL, Torabinejad M.
    Journal: J Endod; 1993 Apr; 19(4):177-9. PubMed ID: 8326263.
    Abstract:
    Because of technical problems and hazards of radiation, dentists have desired alternative ways to determine the working length during root canal therapy. Attention has turned to electronic devices for measuring root canal length. Several such devices are now available. They show promise but their accuracy is hampered because moisture in the root canal can result in inaccurate responses. Recently, a new device, Endex, has been introduced, claiming ease of operation and accuracy in moist environments. Ten operators used the Endex to measure 185 root canal lengths (in 99 teeth). Endex measurements were compared with radiographic measurements. The Endex located the apical constriction accurately within +/- 0.5 mm in 89.64% of moist canals.
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