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

Figure 2-a, b True-hinge facebow.
Figure 2-b.
One maxillary cast was mounted using the true hinge
kinematic face-bow transfer on a single Panadent articulator
(Panadent, Grand Terrace, California), with Snow White
Plaster #2 (Kerrlab, Orange, California) mixed according to
the manufacturer’s instructions. The second maxillary cast
was mounted with the arbitrary face bow on a single Panadent
articulator (Panadent, Grand Terrace, California), using
the same mounting plaster as was used for the first cast.
The true hinge maxillary cast was placed on a single
Panadent articulator, and an adjustable occlusal table (Panadent,
Grand Terrace, California), with graph paper adhered
to the surface, was attached to the articulator in place of the
mandibular cast. With the occlusal pin at zero, the occlusal
plane relater was stabilized by allowing contact at the maximum
number of maxillary cast teeth (Figure 3).
Figure 3 Maxillary cast mounted with
occlusal relater and pin at zero.
A 1-mm step ruler (Panadent, Grand Terrace, California)
was used to measure the vertical distance of the mesiobuccal
cusp tip of the right and left first permanent molar and the
upper right central incisor (Figure 4).
Figure 4-a Vertical measurements with 1-mm
incremental step ruler: Measurement of anterior tooth
vertical discrepancy.
Figure 4-b Vertical measurements with 1-mm
incremental step ruler: Measurement of posterior tooth
vertical discrepancy.
RWISO Journal | September 2010
49