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them positively seated with the excep-
tion of restoration #7. Upon determining
where the preparation was binding by
painting articulating paste (Bitex, Tanaka
Dental Products) onto the solid prepara-
tion, the restoration was easily adjusted
and the case successful (Fig. 7).
The laboratory technician arrived in
time to cut back and layer tooth restora-
tions #7 through #10 (Fig. 8), which were
then characterized, glazed and fired (Figs.
9-11).
Thirty minutes later, the veneers
were removed from the oven (Programat,
Ivoclar Vivadent) and allowed to cool.
Next, they were placed in the ultrasonic
cleaner for approximately five minutes
to remove excess oil or debris from the
internal aspects. After etching each for 30
seconds with hydrofluoric acid, the teeth
were primed (Monobond Plus, Ivoclar
Vivadent), and an acetone-free bonding
agent (ExciTE F VivaPen, Ivoclar Viva-
dent) applied for quality assurance.
A total-etch technique was performed on
the restorations, whichwere then bonded in
place using a light-cured luting composite
cement (Variolink Veneer, Ivoclar Viva-
dent) in medium value (0). Once tacked in
place using the “tack and wave technique”
presented by David Hornbrook, among
others, the excess cement was removed
utilizing strips, scalers and floss (Axis Qwik,
AxisDental). The restorationswerepolished
(
Fig. 12) using a Robinson’s polishing brush
and diamond paste (Diashine Diamond, VH
Technologies Ltd.).
CONCLUSION
CEREC technology has advanced the
dental field into the 21st century. Over the
years, CEREC capabilities have evolved
from single-tooth restorations to a wide
range of indications, including implant
abutments, fixed partial dentures and
full-mouth reconstructions. Innovative
software and chairside high-performance
milling capabilities allow dentists to treat
multiple teeth and a range of indications
all in a single visit, saving the dentist and
patient time and money.
Figs. 9-11: The restorations were then
characterized, glazed and fired.
Fig. 12: A final polish was performed.
Fig. 13: Full facial view of the patient
revealing is CEREC and IPS e.max
CAD veneer smile makeover.
9
10
11
12
13
Material advancements have contrib-
uted to the versatility, predictability and
durability of CEREC restorations. Progres-
sivematerials such as IPS e.max CAD have
been designed and developed expressly for
use with CAD/CAM technology, providing
the strength and esthetics that have come
to define successful restorations. The
case discussed here demonstrates the
ways CEREC software and technology
have simplified the fabrication of multiple
restorations while providing the quality
and predictability for which CAD/CAM
technology is known.
For questions and more information,
Dr. Horwitz can be reached at
hordent@yahoo.com
.
Acknowledgements
Dr. Horwitz would like to thank Barb Warner Wojdan from
Knight Dental Group for her collaboration on this case.
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