Slidematic Facebow Procedure - Denar Slidematic Manuel D'utilisation

III. Slidematic Facebow Procedure
Mark the anterior reference point on the patient's
right side using the Reference Plane Locator and
Marker. The point is 43 millimeters above the inci-
sal edge of the right central or lateral incisors (see
Figure 1). On an endentulous patient, measure up
from the lower border of the upper lip when it is
in repose.
Cover the metal with two thicknesses of base-
plate wax softened in warm water (approximate-
ly 135˚F or 55˚ C). With the bitefork arm to the
patient's right, place the fork in the mouth, align-
ing the patient's midline with the index notch, so
that it is parallel with the patient's coronal and
horizontal planes (see Figure 2). Be certain to
obtain a light indexing of the patient's maxillary
arch and then ask the patient to hold the bitefork
in place.
Attach the vertical shaft to the measuring bow
with the clamp marked #2 on the patient's right
and tighten the finger screw (see Figure 3). It is
necessary to tighten this finger screw to secure
the vertical shaft to the measuring bow and also
to avoid movement. This same movement will
occur after inserting the vertical shaft in the
articulator index as shown in Figure 12. Be sure
to tighten the finger screw.
Loosen the finger screws on the clamps
marked #1 and #2 on the vertical shaft. With
your thumb, loosen the center wheel on the top
of the measuring bow and slide the bow open
to accommodate the width of the patient's face.
Assemble the facebow on the patient by sliding
the bitefork arm through the hole in clamp #2
as the measuring bow's earpieces are placed
in the patient's auditory meatus (see Figure 4).
Tighten the center wheel on the measuring bow
and loosen the finger screw on the anterior refer-
ence pointer. Raise or lower the bow so that the
pointer or sight aligns precisely with the anterior
reference point (see figure 5) and tighten clamp
#1, then clamp #2 (see Figures 6 and 7). When
tightening clamps #1 and #2, care must be taken
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Figure 1
Figure 2
Figure 3
Figure 4
Figure 5