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educing treatment time with digital dentistry
by a full upper denture. She was
instructed to maintain a soft diet for the
first three months. The implants were
allowed to integrate for six months.
Throughout the entire healing phase,
the patient reported a very stable bite
and was free of TMJ symptoms.
Final Restoration
The final restoration protocol made use
of intraoral scanning, dental CAD/CAM
and 3-D printing to deliver the final
prosthesis in just three appointments.
Digital impressions were taken with
an intraoral scanner at the first appointment.
The second appointment
was for try-in of the combined denture
setup and milled titanium bar. The
definitive prosthesis was delivered at
the final appointment.
Figure 21: A digital impression of the patient’s temporary overdenture in place was taken with an intraoral
scanner.
❯ First Appointment
The esthetics, occlusion and VDO of
the patient’s provisional prosthesis
were correct, so it was used to guide
the design of the final restoration. First,
a scan was taken of the provisional in
the mouth, taking care to capture adjacent
anatomical landmarks (Fig. 21).
Next, the opposing dentition was
scanned. Because a denture served as
the opposing dentition, it was scanned
extraorally (Fig. 22). The patient was
then asked to close, and the bite was
scanned in maximum intercuspation
(Fig. 23).
Next, the provisional was removed,
scanning fixtures were attached to the
multi-unit abutments and the restorative
arch was scanned (Fig. 24). Care
was taken to capture the same adjacent
anatomical landmarks as the first
scan of the provisional. After intraoral
scanning of the edentulous arch was
complete, the provisional denture was
reattached to the multi-unit abutments.
Figure 22: The maxillary denture scan was performed
extraorally.
Figure 23: Scanning the patient’s bite.
At the laboratory, technicians used
the scan data to design the final
prosthesis. The denture and the milled
titanium bar were designed together
Figure 24: After removing the temporary overdenture and attaching scanning fixtures, the edentulous arch was
scanned to capture the position of the multi-unit abutments.
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