Gamma CADIAX 4 A, Operating Instructions Manual

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CADIAX compact
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3 Recording TMJ movement
The CADIAX system allows joint movement recording by usage of both anatomic (arbitrary) and
kinematically determined (individual) joint axis. For recording on kinematically defined (exact)
joint axis, the face bows Condylograph or Condylograph comfort are required.
In principle, the registration of mandibular movement is always carried out in the following steps:
1. Preparations
2. Fixing the clutch onto the teeth of the lower jaw
3. Mounting the upper face bow
a. Anatomic face bow
b. Condylograph
c. Condylograph comfort
4. Mounting the writing bow
a. to the arbitrary face bow
b. to Condylograph or Condylograph comfort
5. Attaching the measurement flags and styli
a. on the arbitrary face bow
b. on the Condylograph or Condylograph comfort
6. Recording the joint track curves
7. Registration of CPM (if a para-occlusal clutch is used)
8. Finishing the registration, saving data
3.1 Posture of the patient
The patient should sit in an upright and relaxed position. Body movements during condylography record-
ing can change the hinge axis position and should be avoided. The head should be held upright and the
upper spine in the habitual normal position, i.e. not be bended forward or backward. It is recommended
to use a head and neck support.
Glasses, earrings, hair barrettes, etc. of the patient should be taken off. Electrostatically charged hair
can cause artifacts in the recordings. This effect is intensified by hairspray. For this reason, the patient
should wear a cap, e.g. a surgical cap as used by surgeons. Long hair should be combed back behind
the ears.
3.2 Instructing the patient
Explain the lower jaw movements like protrusion, retrusion, mediotrusion and medioretrusion to the pa-
tient. Ask the patient to execute all these movements completely and as far as possible. Practice these
movements before mounting the face bow.
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