User manual | Cercon ht – safety of full-contour restaurations

Cercon ht –
safety of full-contour restaurations
redefined.
Minimum occlusal wall thickness: 0.5 mm,
including a 0.1 mm reserve for occlusal adjustment
Conservative circular
preparation, minimum wall
thickness 0.4 mm
Marginal region, minimum
wall thickness 0.2 mm
Cercon ht – the new zirconia generation
Cercon ht
The good feeling of threefold safety
Validated
safety
✔ ✔ Cercon is as safe as metal-ceramics
Two long-term clinical studies delivered the only clinical proof that the
results for Cercon zirconia bridges were comparable to those of metal-ceramic bridges, the gold standard (Sailer et al. 2009). 40-month
survival rates were 100%.
✔ ✔ Cercon offers the broadest range of
supported indications
Clinical studies on cantilever bridges (Wolfart et al. 2009) and widespan Cercon bridges (Schmitter et al. 2009) have demonstrated high
levels of safety for Cercon in different indications.
✔ ✔ Cercon is the only zirconia with a scientifically
supported veneering ceramic concept
Cercon is the only zirconia material for which the systemic safety of
ceramic veneers has been scientifically studied. Extant studies include
in vitro and clinical research, but also naturalistic observations (Rinke,
IADR 2010).
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Source: Cercon smart ceramics, Scientific compendium Vol. IV
Light transmission of conventional zirconia
and Cercon ht
The new
zirconia generation
✔ ✔ The material
Cercon ht is based on the yttria-stabilized zirconia material Cercon
base, which has been clinically proven for 10 years. With the addition of a minuscule amount of alumina, a modified production process
and a sintering temperature adjusted to the specific requirements of
this material, Cercon ht combines proven clinical safety with outstanding translucent properties.
Cercon ht, crowns 25–27, conservative
preparation, fully contoured restoration
✔ ✔ Flexural strength
Cercon ht has the same flexural strength as Cercon base.
✔ ✔ Long-term stability
Artificial-aging studies (thermal cycling and storing in a water bath)
have shown that the long-term stability of Cercon ht is the same as
for Cercon base.
Cercon ht, bridge 25–27, classic preparation,
veneered with Cercon ® ceram love.*
Source: University of Siegen, Germany, 2011
✔ ✔ Veneering characteristics
Cercon ht has the same excellent veneering characteristics as
frameworks for metal-ceramic restorations, the gold standard.
Source: University of Heidelberg, Germany, 2011
Cercon ht, bridge 11–22, crown 12,
classic preparation, veneered with
Cercon ® ceram love.*
✔ ✔ Clinical safety
Cercon ht is the result of ongoing Cercon development efforts, offe-
* Follow the preparation recommendations in
Cercon Clinical Guidelines 2011
ring comprehensive and validated safety.
Source: Cercon smart ceramics, Scientific Research vol. IV
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Cercon ht: safety of full-contour restorations redefined
Fully anatomic crowns and bridges
Minimum occlusal wall
thickness: 0.5 mm,
including a 0.1 mm reserve
for occlusal adjustment
Conservative circular
preparation, minimum
wall thickness 0.4 mm
Marginal region, minimum
wall thickness 0.2 mm
Cercon ht – the new zirconia generation with outstanding translucency and conservative preparation
option for fully anatomic crowns and bridges.
Abrasive behaviour of various ceramic materials
Ceramic veneering material
e.max ®
Traces of grinding
Traces of grinding
Cercon ht
Smooth
surface
Specimen
Traces of grinding
Traces of grinding
Smooth
surface
Antagonist
Source: University of Regensburg, Germany, 2011
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Most frequent complications of
fixed all-ceramic restorations
Solution
Biological failure
due to an increased loss of tooth subs-
✔✔ Cercon ht crowns require a wall thickness
tance, given preparation recommendations
of only 0.5 mm, including a 0.1 mm reserve
of up to 2 mm.
for occlusal adjustment.
Chipping
Solution
✔✔ Cercon ht crowns and bridges are monolithic
due to elevated force levels.
and offer protection against chipping.
Fractures
Solution
✔✔ Cercon ht crowns and bridges made of pure
of restorations due to elevated
force levels.
zirconia offer remarkably high strength (Data
on file).
Decementation
Solution
Loss of cement retention in extensively prepa-
✔✔ Cercon ht crowns and bridges facilitate con-
red short abutments with a reduced supply of
servative tooth preparation, increasing the
cementing surfaces.
surface available for cementing and improving
retention.
Damaged antagonists
Solution
✔✔ Cercon ht crowns and bridges are made of
through increased wear and tear.
the first zirconia material tested to be safe for
antagonists after occlusal adjustment and repolishing.
Safety of fully anatomic designs under real-life conditions
fully anatomic crowns and antagonists have
After repolishing
Antagonist wear area [mm 2]
Antagonist wear area [mm 2]
7,60
6,57
6,32
5,96
been performed on a glaze or polish base and
do not take into account any subsequent occlusal adjustments. Now, for the first time, a scien-
4,50
4,15
Cercon ht
Lava ®
e.max ®
Duceram Kiss
Cercon ht
for their antagonists.
2,81
Lava ®
to fully anatomic contour, are demonstrably safe
e.max ®
Cercon ht crowns. Cercon ht crowns, designed
Duceram Kiss
tific study has examined adjusted and repolished
Product names marked ® are registered
trademarks of the respective trademark owner(s).
All previous studies on the wear behaviour of
After occlusal adjustment
Source: University of Regensburg, Germany, 2011
5
Cercon ht
Fully contoured and customized in the laboratory
Fully contoured posterior
crowns &
bridges
Cercon ht: These fully contoured posterior crowns and bridges are the first to implement a conservative
restorative concept for the posterior region for a minimally invasive restorative procedure.
Cercon ht: Fully contoured posterior crown. This
example shows an A2 shade, with body and enamel
regions individually characterized.
Cercon ht: Outstanding translucency and customized
fluorescence support the natural and harmonious
appearance of the restoration.
Cercon ht – fully contoured and customized in the laboratory
Cercon ht as milled
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Custom-primed
Final customization
Cercon ht after glazing
Cercon ht
Conservative in the dental surgery
Preparation for all-ceramic crowns
Preparation for fully contoured crowns
Cl assi c p re p a r a tio n
C o ns erv ati v e preparati o n
Occlusal:
0.5 mm, including a
0.1 mm reserve for
adjustments
Cercon ht
Minimum wall thickness
1.5–2.0 mm
Circular:
min. 0.4 mm
Margin:
min. 0.2 mm
Cercon ht, crowns 25–27, conservative
preparation, fully contoured restoration.
Harmonious appearance thanks to diligent
laboratory customization.
Preparation for all-ceramic bridges
Preparation for fully contoured bridges
Cl assi c p re p a r a tio n
C o ns erv ati v e preparati o n
Minimum wall thickness 1.5–2.0 mm
Occlusal: 0.6 mm, including
a 0.1 mm reserve for adjustments
Cercon ht
Circular:
min. 0.5 mm
Cercon ht, bridge 25–27, conservative
preparation, fully contoured posterior bridge.
Margin:
min. 0.2 mm
Cercon ht, bridge 25–27, conservative
preparation, fully contoured posterior bridge.
Cercon ht – conservative in the dental surgery
✔ ✔ Preparation
✔ ✔ Impression
(e.g. Komet)
(Aquasil Ultra; DENTSPLY D e Trey )
✔ ✔ Intraoral adjustment
(e.g. Komet, Edenta)
✔✔ Extraoral re-polishing
(e.g. Komet, Edenta)
✔✔ Definitive cementing
(SmartCem2 self-adhesive cement, shades: light, medium,
dark, translucent, opaque; DENTSPLY D e Trey )
For a comprehensive list of materials please refer to: www.degudent.de/Materialliste-cercon-ht.pdf
7
Fascination
GB
28275/1106/Z
Stand: 06/2011
Prosthetics
DeguDent GmbH
Rodenbacher Chaussee 4
D-63457 Hanau-Wolfgang
www.degudent.de

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