Planmeca ProMax 3D Mid User Manual page 48

TEMPOROMANDIBULAR JOINT (TMJ) EXPOSURE
Frankfort plane
5°
Frankfort plane light
44 Planmeca ProMax 3D Mid
Frankfort
plane
light
Thumb
wheel
Position the patient's head so that the Frankfort plane is
tilted down five degrees. To do this support the back of
the patient's head with your hand and, using the Frankfort
plane light as a reference line, adjust the position of the
patient's head by raising or lowering the unit with the
height adjusting buttons. Make sure the patient's back
and neck are straight.
The Frankfort plane light, which is located on the side of
the column, can be moved up or down. This is done by
rotating the thumb wheel below the light slot.
The imaging position and angle must be checked when
the patient is positioned in the X-ray unit:
Touch the Jaw field on the main display, or alternatively,
tap the jaw icon on the right side of the display. The Select
jaw size, adjust position and angle display will appear.
Imaging position: Use a ruler to measure the distance
between the layer light and the patient's temporo-
mandibular joint to determine the exact imaging position.
Adjust the imaging position with the left / right arrows
according to your measurement.
Imaging angle: Take a submento-vertex exposure (axial
projection) to determine the exact imaging angle. Adjust
the imaging angle with the left / right arrows according to
your measurement.
User's Manual (2D)