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canal length indicator bar to suddenly
jump all the way to the “OVER”.
Problem
Check points
Responses
Display not
steady while
measuring: the
measurement
result is rather
long or shorter;
numerical
display irregular.
Is there a lesion at the
apex?
Foramen through absorption and an
accurate measurement cannot be
obtained.
Is the file holder broken or
dirty?
Replace or clean the file holder.
Measuring line is
damaged or bad contact?
Connect the two ends of measuring
line the screen shows a short
connection, and the link of the
measuring line is not abnormal.
Canal length
Indicator bar
does not move
only when very
near the apical
foramen
Is root canal blocked?
Canal length indicator will return to
normal when the file reaches apical
constriction.
Is root canal extremely
dry?
Moisten the root canal with hydrogen
peroxide or a saline solution.
A small file in a large root
canal.
Choose right size of the file.
6．Cleaning and disinfection
6.1 The main unit and measuring cable can only be cleaned with cotton cloth
dipped in alcohol.
6.2 Cleaning with chemical solution may cause damage to the main unit and
measuring cable.
6.3 The lip hook and file clamp have biocompatibility (in line with EN ISO
10993-1). Before using to every patient, these parts must be disinfected. It is
suggested that the method of high temperature and high pressure steam
disinfection be adopted. The parameters of high temperature and high pressure
steam disinfection are recommended as follows:
