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Figure 12: Excess border material trimmed
Figure 13: PVS adhesive applied to custom tray
Figure 14: Impression material placed around implants
Figure 15: Final impression with impression copings
The impression was allowed to set in the mouth for four minutes, picking up the four
impression copings upon removal.
(Fig. 12). Duller blades may chip the border mold and should be avoided. The finished mold was cooled and dried again,
prior to the application of adhesive on the intaglio surface of the custom tray and the Adaptol border, to ensure adhesion of
the polyvinyl siloxane (PVS) impression material to both the border and tray (Fig. 13). This adhesive was allowed to set for
seven minutes. Light-bodied PVS impression material was then placed around the implants, making sure not to place any
of the material over the undercut areas of the impression copings (Fig. 14). The impression was allowed to set in the mouth
for four minutes, picking up the four impression copings upon removal (Fig. 15). The overall quality of the impression was
deemed excellent, having captured all of the borders and necessary anatomical landmarks. The impression was then sent
to the lab for the insertion of Inclusive Mini Implant Analogs and pouring of the master cast.
Third Prosthetic Appointment: Wax Rim Try-in
With a mandibular wax occlusion rim (also known as a bite block) and master cast of her lower arch (complete with
silicone-based soft tissue insert) (Fig. 16), the patient returned for jaw relation records, including vertical dimension of
occlusion (VDO), centric relation and centric registration. The wax rim contained a pair of attachments to snap onto the
patient’s distal implants, for stability during the relation processes (Fig. 17). The patient’s existing treatment dentures were
used as a baseline measurement.
A dot was placed on the patient’s nose and chin with an indelible marker. The patient was asked to lick her lips, swallow,
and then close her jaw, teeth biting together gently. The distance between the two dots was measured, and the process
repeated, to verify that the measured VDO was consistent (Fig. 18). The process was repeated yet again, but this time the
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