13 CROSS-SECTIONAL EXPOSURE (OPTIONAL)
User’s Manual Planmeca ProOne 67
The three patient positioning lights will automatically
switch on when you select the exposure program. They
will switch off after four minutes. If the lights go out before
you have positioned the patient, you can touch either of
the target position arrows to switch the lights back on.
Stand behind the patient and make sure that the patient’s
shoulders are level and the neck muscles relaxed.
Position the patient’s head so that the midsagittal plane
coincides with the midsagittal plane light beam. Make
sure that the patient is looking straight ahead as the light
may appear to be correctly positioned but the patient’s
head could be turned slightly to one side.
To take exposures of the upper jaw, position the maxillary
alveolar ridge so that it is horizontal. To take exposures of
the lower jaw, position the lower edge of the mandible so
that it is horizontal.
To do this support the back of the patient’s head with your
hand and then adjust the tilt of the patient’s head by
raising or lowering the unit with the height adjusting
buttons. The patient’s back should be straight. If
necessary, stretch and straighten the patient’s neck by
moving the unit up slightly.
Height adjusting
Target in upper jaw
Target in lower jaw
buttons
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