2010 RWISO Journal - Roth Williams International Society of ...

Figure 43 Nasion relator moves transversely along
the horizontal part of frame so the frame can be
placed on the head without losing parallelism.
Figure 44 Upper and lower frames
that have been placed on the head.
Figure 45 Axiograph III uses two recording styli in a
collinear alignment, rectilinear with the upper
Axiomatic flag-bow recording plates.
The upper frame is fastened to the head first, and the
lower frame is placed next. If earplugs are inserted into the
auditory canals, the alignment pins automatically indicate
the approximate hinge positions. The alignment pins also
make the upper and lower parts of the face-bow parallel and
perpendicular to each other (Figure 46).
Figure 46 If ear plugs are inserted into auditory canals,
alignment pins automatically indicate approximate hinge
positions. The alignment pins also make the upper and lower
parts of the face-bow parallel and perpendicular to each other.
As was done in the Axi-Path experiment, the amount of
measurement error is then determined when the right condyle
is moved 5 mm forward (Figure 47). This movement
produces a new hinge axis, which in turn makes new hinge
points on the skin. The new hinge axis diverges from the
original hinge axis as it moves farther from the anatomic
structure (Figure 48).
Figure 47 Supposition: Right condyle moved 5 mm forward.
RWISO Journal | September 2010
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