One-on-One An Interview with Dr. Paul Homoly Simply Beautiful A ...

smoothed, using a rotary diamond instrument. A no. 1 cord
was then placed above the no. 00 cord for each preparation.
Interocclusal Records
Figure 13: As the provisional restorations hold the vertical
dimension of occlusion, a “prep-to-prep” anterior centric
relation/occlusion record is made.
Figure 14: An anterior bite record of “provisional-to-prep” is
made in centric relation/occlusion.
After the retraction was completed, the no. 1 cord was removed,
and the no. 00 was left in place. The light-bodied
impression material was then syringed into the retracted sulci.
The impression tray was filled with heavy-bodied impression
material and placed over the teeth. 5 After master impressions
were made, a facebow registration was taken of the maxillary
preparations, using an earbow (Denar ® Slidematic Facebow,
Whip Mix Corp.; Louisville, KY). Interocclusal records in CO
were taken, a sextant at a time, while the remaining provisional
restorations maintained the vertical dimension of occlusion
position.
The first series of interocclusal records was taken “prep
to prep” (Figure 13), using a polysiloxane bite registration
material (Registrado X-tra, Voco; Cuxhaven, Germany).
A second series of interocclusal records was taken
“provisional to prep” (Figure 14). These records allow the
dental technician to cross-mount models of the provisional
restorations with the prepared teeth, which will aid in
design and fabrication of the definitive restorations. 6-10
Figure 15: The bisque-bake try-in. Remember that anterior
color cannot be evaluated at this point, since the platinum foil
remains in place until the case is completed.
Figure 16: View of the “occlusal lock” in ceramic during the
bisque-bake try-in. Compare to Fig. 12. Cross-mounting in
the laboratory, using the proper interocclusal records, and a
facebow transfer has allowed a high degree of accuracy in
the first bake.
Bisque Try-in
“
There is a natural
texture, translucency,
and cervico-incisal
blend of color. ”
The purpose of the bisque-bake try-in is to evaluate occlusion,
marginal integrity, proximal contacts of the posterior
ceramic restorations, and anterior ceramic contours. Because
the platinum foil remains in the feldspathic restorations, it is
not possible to assess marginal integrity, proximal contact, or
color of the anterior teeth. These parameters will be refined
by the ceramist during the finishing process and evaluated at
the delivery appointment. Figure 15 shows the case at bisquebake
try-in, with the patient’s dental arches lightly closed in
CO. The precision of the occlusion on the first closure is due
primarily to the accurate interocclusal records and crossmounting
with the provisional restoration models.
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