Dentsply Maillefer PROPEX II, User Manual

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2) Apical Zone
The apical zone is divided into 10 segments graduated from 0.9 to 0.0 (apex) as
visual information of file progression.
When the apex is reached, the cursor shows “APEX” and a solid tone is emitted.
Beginning of Apical
Zone
Middle of Apical Zone Apical position
Note: As a safety precaution in order to avoid over-instrumentation, it is
recommended to proceed as follows: place the fill onto an endodontic ruler
at the point where the
Pro Pex ® II indicates ‘APEX’. Subtract a minimum of
0.5 mm from the measured file length.
3) Over-instrumentation
A red segment and a warning signal indicate that the file has passed the Apex. The
cursor on the tooth icon shows “OVER”.