Dentaltown November 2017 - 34

show your work
case study

Fig. 7. Sandblasting restorations at one- or
two-bar pressure

Fig. 8. Dispensing 3M RelyX Unicem 2
Self-Adhesive Resin Cement into 3M Lava
Esthetic zirconia restorations
Fig. 6. Lab restorations on SLA model

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Dentaltown!
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you think might be a
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Sam Mittelsteadt:
sam@dentaltown.com.
Be sure to include a
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special to you, to help
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the best contenders
for publication.

34

NOVEMBER 2017 // dentaltown.com

more light than natural teeth, preventing
it from mimicking natural dentition.
For this particular case, I used a new
full-contour zirconia (Lava Esthetic Zirconia,
3M). The zirconia is modified to incorporate
both the tetragonal and cubic phases. This
combination boosts light transmission,
which improves the appearance and vitality
of the material.
Additionally, the product's built-in
fluorescence reacts to light like natural
teeth without needing additional stains
and glazes that are often lost through wear.
The zirconia's shading is built in rather
than painted on or infused via shading
liquids. With this approach, a crown can
be positioned with the gradients available
in the puck or block and milled to form
for true polychromatics that will last the
lifetime of the restoration (Fig. 2, p. 33).
Since we were dealing with the anterior
teeth, the patient obviously wanted superb
aesthetics. The laterals had a bit of a halo
effect around the incisal edges and we
wanted to achieve that same effect with
the restorations.
We started by preparing the teeth and
adding composite materials to modestly
correct the geometries to allow for optimal
milling and fitment. I packed retraction

Current zirconia in its
tetragonal form is highly
popular for posterior
applications due to chip
and fracture resistance,
full-contour simplicity and
ability to be cemented
conventionally or
adhesively bonded.
cord around each tooth, and then used
retraction paste (3M Retraction Capsule)
to reduce the potential for bleeding, open
the sulcus and reduce crevicular weeping
along with the cord. It can be used alone
or with cord, I prefer both for optimal
results (Figs. 3 and 4, p. 33).
We digitally scanned the impressions
and made temporaries. We sent our laboratory a prescan in addition to the desired
restoration position so they could overlay
the patient's precondition with the fi nal
position. This allowed us to achieve proper
alignment for the midline and desired
incisal correction for 8 and 9 (Fig. 5, p. 33).


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Table of Contents for the Digital Edition of Dentaltown November 2017

Dentaltown November 2017 - Intro
Dentaltown November 2017 - Cover1
Dentaltown November 2017 - Cover2
Dentaltown November 2017 - 1
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