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Apex Locator with Low Speed Handpiece Option

As the world's best selling apex locator, Root ZX II has set the industry
standard for accuracy and patient safety.


Invented in 1992, it was the first unit with the ability to work in wet canals -
measurement is not affected by the presence or absence of blood, other
discharges, or electrolytes. Root ZX® II features patented technology which
offers an accuracy rate of 97.5%*. User friendly, its display screen is large
and easy to read. The action of the meter in the display corresponds exactly
to the tactile sensation of using the file. Other features include: slim,
lightweight file holder, no zero-adjustment, automatic calibration, battery power
indication, and automatic power off function.

As an optional upgrade, the OTR Module enables the unit to function as a low
speed handpiece, apex locator, or a combination of both. The module snaps
easily onto the back of the unit and offers a unique 90° auto torque reverse and
file advancement feature. OTR maintains excellent cutting efficiency with less
stress on the file, reducing the possibility of breakage.


Root ZX II Module Configurations:

  • Root ZX II Apex Locator
  • Root ZX II with OTR Module



  • 97.5% accuracy rate*
  • Automatic calibration
  • Ability to work in wet canals
  • Easy to read display screen
  • Upgrade option to Low Speed Handpiece