Page 28 - CEREC Q3|2013

26 | cerecdoctors.com | quarter 4 | 2013
spatula, brush, microbrush, cleaner and
glaze. The bond between the stains and
the restoration is obtained by polym-
erization; the stains are simply applied
on the surface and light cured. The
ratio of liquid to stain powder may be
altered by the user to adjust the color
intensity. A selective as well as a flowing
application of the stains is possible. The
chemical glazing VITA Enamic GLAZE
is used to seal the surface and achieve a
higher durability and brilliance of the
shades in the oral environment. Five
steps are required for characterization:
conditioning of the restoration surface;
mixing and application of the stains;
polymerization; application of the
chemical glaze and; final light-curing.
| | | o s t e r m a n n
STAINED ANTERIOR CROWN
The presented examples
should not create the impres-
sion that VITAEnamic is only
suited for theposterior region
(Fig. 23). The esthetic poten-
tial of the hybrid material
even allows for demanding
restorations in the anterior
region — no matter if crowns
or veneers are desired. Basi-
cally, the restorations arewell
integrated into the remaining natural
dentition and offer highly natural colors
and photoconductivity.
Figure 24 shows the initial situation of a
case in which a VITA Enamic crown was
planned in region 12 (tooth #7). Due to
Fig. 20: Crown prepared for character-
ization using the shading technique
Fig. 21: Mixing of the VITA Enamic
effect shades
Fig. 22: Characterized
crown
Fig. 23: The
result
Fig. 24: Initial situation
Fig. 25: Digital shade determination
Fig. 26: Blank of the shade 3M2 20
21
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the highly individual
shade and texture of
the teeth, adevicewas
used for shade deter-
mination (VITAEasy-
shade Advance, VITA
Zahnfabrik, Fig. 25).
The staining tech-
nique was chosen
for characterization
of the restoration. A
block of the shade
3M2 was selected (Fig. 26).
After digitization of the preparation
(Figs. 27-28), a digital copy of the natural
tooth was created by virtual design (Fig.
29). The restoration was milled using the
CEREC system. As expected, an accurate
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