Gamma CADIAX 4 A, Operating Instructions Manual

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Recording TMJ movement
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The anterior face bow height is the difference in height between the marked orbital point and the upper
face bow. The value can be read from the vertical scale of the reference point indicator.
When using the fixed reference point indicators, the value cannot be changed and is fixed to their
mounting height of 22 mm.
The anterior face bow depth is the difference in depth between the marked orbital point and the upper
face bow. The value can be read from the horizontal scale of the reference point indicator.
When using the individual reference point indicator, it is additionally required to specify the position, in
which this value is measured. In
position T (transfer) , the pointer is oriented parallel to the side arms of
the face bow, and in position P (patient) , it is inclined by 30° towards the patient's nose.
3.8 Setting the reference position
Guide the patient into the retral reference position and
press the foot switch. The position set here will be used
as zero point for the following recordings.
You can also re-set the reference position between recordings by pressing the button again.
3.9 Recording joint movements
3.9.1 Joint track curves
After entering the face bow parameters and setting the
reference position, the application will automatically se-
lect the first item to be recorded. You can change this
selection by clicking the buttons on the left border of the
window at any time.
Before starting a recording, ensure that the patient is in reference position. In the ideal case, the
red cross of the real-time cursor is positioned exactly in the origin of the coordinate system. If
this position is difficult to reproduce, you can re-set the software's reference position via the but-
ton of the same name (refer to chapter "Setting the reference position
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