Owandy I-Max Touch, User Manual

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USER'S MANUAL
General instructions for use
(Rev. 0) I-Max Touch (110-120V) 57
6.6 TMJ examination
The TMJ examination with open/closed mouth is similar to panoramic;
the only difference is that the exposure is performed only on the involved
area (the temporo mandibular joint), then it stops, and starts again on
the second joint. The operation sequence of the examination is therefore
identical to the one described for the panoramic.
The temporo-mandibular joint examination makes use of a projection
geometry giving an image of the X-rayed condyle along a direction almost
parallel with its major axis, in order to achieve a clear view of its
positioning inside the cavity.
This TMJ function enables to obtain 4 different acquisitions on the same
image, by performing two rotational movements. The 4 images represent
the right and left condyle of the temporo-mandibular arch (TMJ) with
closed mouth and open mouth.
The position of the images couples the images corresponding to the same
condyle to help a diagnosis. Figure 11 shows the information related to
the single sectors.
RIGHT condyle with
closed mouth
1
st
exposure
RIGHT condyle with
open mouth
3
rd
exposure
LEFT condyle with
open mouth
4
th
exposure
LEFT condyle with
closed mouth
2
nd
exposure
Figure 11
NOTE:
During the TMJ examination, the emission of X-rays is intermittent (it is
interrupted during the transition phases between the various exposures),
but it is necessary to keep the X-ray button pressed for the whole
rotation time.
Do not release the X-ray button during the emission interruption if not
necessary.
The cooling phase of the tube-head occurs at the end of all 4 exposures.
In the CHILD position, exposure start is delayed by a few degrees with
respect to the ADULT position.
L
R
*