Dental Asia July/August 2022

USER REPORT
mockup prior to beginning tooth
preparations. While waiting for
anaesthesia, we scanned the
upper arch with a mockup applied
as a Pre-Preparation, the lower
opposing arch and two-bite
registrations. After marking the
teeth as directed, we carefully
trimmed away the clinical crowns
of the teeth being treated to
maintain as many attached tissues
to allow for easily scannable areas
while capturing the preparations.
Fig. 5
The initial depth cuts were made
directly through the bisacryl
mockup to ensure conservative
tooth reduction in additive design
areas. After the preparations
were completed and refined, we
placed dual retraction cords and
allowed them to remain in place
for 10-15 minutes. The top cord
was then removed and all eight
preparations were scanned to
complete the necessary records.
The case was post-processed and
evaluated to ensure all areas were
adequately recorded.
Fig. 6a Fig. 6b Fig. 6c
Fig. 7a
Fig. 7b
Provisional restorations were
fabricated with a bisacryl shrink
wrap technique using the same
putty matrix from the mockup.
The provisionals were trimmed
and polished, and the patient was
dismissed.
Fig. 7c
Fig. 5: Bisacryl mockup applied before preparation
Figs. 6a-6c: Preparation
Figs. 7a-d: Final outcome
Fig. 7d
We saw the patient after a week
from post-op (Visit 3) at which
time we evaluated the
provisionals and made minor
occlusal adjustments in
excursions. Once both the patient
and clinician were satisfied,
we obtained a TRIOS scan of
the provisionals. It was only at
this time that we instructed
the laboratory to proceed
with manufacturing the final
restorations copied as close
as possible to the approved
provisionals.
Approximately three weeks later,
the patient returned for her delivery
visit (Visit 4). The provisionals were
removed and the restorations were
tried in. The restorations required
only one minor contact adjustment
between teeth 22 and 23 where we
felt the contact was slightly tight.
Otherwise, the units fit impeccably
well and satisfied the patient’s initial
treatment goals.
The units were isolated and bonded
with resin cement and the patient
was seen another week later for a
post insertion visit (Visit 5) where
we checked the occlusion and took
postoperative photographs. A posttreatment
TRIOS scan was also taken
in centric relation (CR) to be used for
the fabrication of an occlusal guard.
DIGITAL ECOSYSTEM
The long-term benefit of using
3Shape digital workflows is being
able to implement and grow
digital skills over time at your
own pace. Being a TRIOS user
DENTAL ASIA JULY / AUGUST 2022 43