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EN
OPERATOR'S MANUAL
51
6) Make sure that the examination required is correctly
selected, observing CLOSED MOUTH
or
OPEN MOUTH
icon.
Note, in case of examination with open mouth, the
light trace translates forward: in fact, when the mouth
is wide opened, the patient
’s condyle comes out of the
mandibular fossa and moves forward.
Use
keys to position the vertical focusing
light trace exactly on the condyle head, as shown in
the figure.
This referen
ce is useful to optimise the patient’s
alignment, but it is not strictly necessary.
7) Before pressing the X-ray emission button, ask the patient to close his/her eyes and to remain still.
5.4.5.2. FRONTAL TMJ
Repeat the steps of the Lateral TMJ examination, with the
following modification to steps 4 and 6:
Do not position the patient’s head according to the
Frankfurt plane, but so that the vertical light trace overlaps
the mandibular branch, thus passing through the condyle
head and the mandibular angle.
In most cases this will make the horizontal light trace pass
through the upper edge of the auditory meatus and on the
upper eyelid, as shown in the figure.
To adjust the head’s inclination, just lift or lower the unit
using the height adjusting buttons.