9
5.4.
Device operation
Do not use this unit with patients who have a pacemaker, as its effect has not
been evaluated.
5.4.1.
Place rubber dam prior to beginning endodontic treatment.
5.4.2.
Obtain an initial radiograph and measure the distance between a reference
point (i.e. incisal edge, peak of the cusp, etc.) to the image of the anatomical
apex for the canal you will be working on. Subtract 0.5mm to establish your
TEMPORARY working length.
5.4.3.
Preflare
the canal to partially remove canal
contents and establish patency to your
TEMPORARY working length.
5.4.4.
To ensure proper measurements, verify that
the canal is not completely dry or calcified. If
needed, fill the canal with an electrolytic
solution (i.e. Sodium Hypochlorite, Saline,
etc.).
5.4.5.
Depending on the size of the canal, insert a
#15 hand K-file or other appropriate file into
the canal.
5.4.6.
Press the On-Off
button to turn the device on. The initial image appears
on the display.
5.4.7.
Plug the measuring cable into the device and make sure that the cable icon
appears on the display (Fig. 4).
5.4.8.
Connect the lip clip and the file clip/touch probe to the measuring cable.
5.4.9.
Put the lip clip
onto the patient’s lip.
5.4.10. Connect the file clip to the file. The
RomiApex™ A-15 will automatically detect
that root canal measurement has started. If the electrical contact is good and
the conductivity of the root canal is sufficient, the file icon inside the small
tooth image will stop blinking and a double beep audio signal will sound.
If there are no beeps, stop measurements, clean the file clip and the file, irrigate
the canal, if required, and resume measurements.
Make sure that irrigation solutions, blood or saliva
don’t fill the access cavity.
Dry the cavity if required before performing measurements.
Fig. 4
