27
Trouble shooting
8
Measured figure
does not move
at all or only when
the file tip is
close to the apical
foramen
Is the file touching a metal
prosthesis?
Are proximal surfaces infected
with caries?
Are there lateral canals or is
the tooth fractured?
Does a broken crown allow
leakage of electric current?
Is there lesion at the apex?
Is the file hook broken or dirty?
Is the canal blocked?
Is the apical foramen very large
and open?
Is the canal extremely dry?
Touching a metal prosthesis with the
file allows a flow of current to gingival
tissue or periodontal pocket and will
cause the meter to jump to the “APEX”.
Current can flow through the caries
infected area to the gums and prevent
and accurate measurement from
being made.
The meter bar may jump to “APEX”
when it reaches the opening of a lateral
canal of the opening of a fractured
tooth that allows the current to flow
to the gingival tissue.
Build up an insulating barrier to
stop the leakage.
A lesion can destroy the apical foramen
through absorption and an accurate
measurement cannot be obtained.
Replace or clean the file hook.
Open the passage all the way through
the apical constriction first and then
take the measurement.
If the apical foramen is large or wide
open and not completely formed,
the measured figure will suddenly jump
when the file tip gets close to the apex.
Moisten the canal with oxydol or
a saline solution.
* If the user is unable to inspect the device himself or if the device fails to work properly after being
adjusted or after parts are replaced, contact local dealer or manufacturer.
- How to check the serial number.
S/N : AF 08140211
Reference