User`s manual

Operation 2011-09-30
12
Crown
Debris
Pulp
Caries
touches
gums
Blocked
Too Dry
Crown or metal prosthesis touching gingival tissue
Accurate measurement cannot be obtained if the file touches
a metal prosthesis that is touching gingival tissue. In this
case, widen the opening at the top of the crown so that the
file will not touch the metal prosthesis before taking a
measurement.
Cutting debris on tooth
Pulp inside canal
Thoroughly remove all cutting debris on the tooth.
Thoroughly remove all the pulp inside the canal; otherwise
an accurate measurement cannot be made.
Caries touching the gums
In this case, electrical leakage through the caries infected
area to the gums will make it impossible to obtain an
accurate measurement.
Blocked Canal
The meter will not move if the canal is blocked.
Open the canal all the way to the apical constriction to
measure it.
Extremely dry canal
If the canal is extremely dry, the meter may not move until it
is quite close to the apex. In this case, try moistening the
canal with oxydol or saline.