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The alarm sounds
when the motor is
working.
Set to Auto Reverse mode, take off contra
angle, there is NO click sound when working
Contact your dealer.
set to Auto Reverse mode, take off contra
angle, there is click sound
Clean the contra angle head
There is some residual contamination on the
rotating shaft of the contra angle
Clean the contra angle head
Apex locator no response
Measuring line, lip clip, file clamp loose contact.
Reconnect
Measuring line, file clamp is aging
Changes measuring, file clamp
Apex locator cannot control
the motor working
Check if control working mode setting is correct
Read instruction manual carefully, set the
main unit in apex locator control
motor
working mode
If the measuring line and lip clip connect
correctly
Read instruction manual carefully, make
sure the installation and connection is
correct
If the contra angle directly contacts with the
human body
Read instruction manual carefully, put
sleeve or rubber dam on the contra angle
If contra angle is installed in place.
Read instruction manual carefully, make
sure the installation and connection is
correct
No warning sound
Check if the sound is on
Turn on the sound
Electric Length Determination and X-Ray Technique
As radiographs only reproduce in a two-dimensional way a three-dimensional root canal system,
there are a few cases in which the X-ray image and the result obtained with electric length determination
do not match. This does not mean that your device
is not working properly or that the X-ray image is
inaccurate.
These discrepancies indetermination occur due to anatomical variation. The actual apical foramen
may not be located at the radiographic apex.
In case of root fracture or perforation, it is
impossible to take a precise length
determination as the electric current leaks
along the fracture gap.
The X-ray image of the canal curvature may show
a shorter working length than with the device,
When the bending direction of the root canal is in
line with the direction of irradiation.
