Simple. Beautiful. Strong.

Simple. Beautiful. Strong.
The new star among dental restoration materials
ZENOSTAR – The clear line for your dental practice
...
 s
tands
for single-piece all-ceramic, white crowns and bridges
without a ceramic veneer. There is absolutely no risk of chipping.
o
ffers
a cost-effective and esthetic, metal-free alternative to
non-precious metal health-service restorations.
 s
tands
for very strong, non-veneered, white dental restorations.
e
mbodies
 i
sa
clarity, biocompatibility and durability.
high-tech milled dental restoration from your dental technician.
 i
s also
suitable when there are problems of space.
Comments from clinic and lab
>>
“As one of the first Cerec users, I am well aware of the advantages of full-contour
ceramic milled restorations. Zirconia materials feature good physical properties
and a pleasing appearance. Because they are comparatively “more simple” – and
therefore more cost-effective – to process, they would seem to be future-oriented
materials for restorative dental surgery. Soon they may also – depending on the
indications – largely replace metals” Dr. Frank Jeschke – dentist/oral surgeon,
Augsburg
“For me, ZENOSTAR is an ideal and highly cost-effective addition to the range of services I offer in the price-conscious segment between esthetics and basic restorations.
Using only three basic shades, I can reproduce all 16 classical shades. The process
is simple and reliable. My customers are attracted by the excellent translucence of
the material which gives amazing esthetic results. This means that I can achieve
results of a consistently high quality regardless of personnel. The dentist can prepare the tooth in a minimally invasive manner; we can combine monolithic dental
restorations with veneered ones. Bridges are possible. ZENOSTAR can do a lot
more than other monolithic single crowns.” Jörg Boger – Dental technician and
business graduate, proprietor of Boger Zahntechnik, Reutlingen
>>
>>
„A few products come along in our lives as Technications that not only please
the patient, the oral cavity and us all at the same time and are profitable in the
making, like the ZENOSTAR crown (the all-zirconia restoration). I started producing
this restoration years ago with regular zirconia, but there is very little comparison to the restoration we now produce with translucent zirconia. It has increased
our business by 30% in this economy. The Dentist often comments “are you sure
these are not layered?” Charles Warren cdt – Dental Consultant, Tempus Dental
Laboratory, Springville (Utah)
The advantages of ZENOSTAR – Simple. Beautiful. Strong.
F
abricated
in a quality dental lab using the latest CAD/CAM
technologies without a veneer and delivering a perfect fit
for your patients.
A
ll-ceramic
dental restorations are in vogue, biocompatible
and esthetic – for cost-conscious patients they represent a
real alternative to non-precious metal restorations.
 A
ZENOSTAR
restoration is the perfect match for minimal
invasive preparation. It withstands the chewing force and
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ZENOSTAR CE
RA
M
ICS
ZEN
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is not susceptible to chipping.
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Clinical case: Three-unit ZENOSTAR Bridge
1. P reparation – Cords inserted before preparation serve to protect the periodontal margin.
2. Impression taking – A hydrocolloid
alginate compound was chosen as
impression material.
3. Correction – After sintering, the fissures
can be adjusted with a diamond-tipped
bur.
4. S hading – After polishing the occlusal
surfaces, shading can begin.
5. Checking the shade
6. ZENOSTAR Bridge on the model
7. Articulating
8. Cementing
9. The finished ZENOSTAR restoration immediately after insertion – the genuine alternative to non-precious metal restorations.
With thanks to: Dr. Frank Jeschke – dentist/oral surgeon, Augsburg and the Rager dental lab, Augsburg
The ZENOSTAR material
The translucent material combines the highest possible flexural strength with the esthetics
of natural tooth shades. ZENOSTAR Zr Translucent is especially suitable for making monolithic
restorations. For full contour ZENOSTAR restorations, there are two ways to create the shade:
by means of the ZENOSTAR brush infiltration method or the ZENOSTAR stain technique. There
are four shade variations available (pure, light, medium and intense) which form the basis for
reproducing individual shade nuances.
ZENOSTAR Zr Translucent can also be used as an esthetic framework material. Especially in
combination with the one-layer technique, this is a fast and cost-effective way to make individual and biocompatible dental restorations in tooth shades.
Material properties
Color
white / X-ray opaque and pre-shaded
Density
> 6.0 g /cm3
Open porosity
0%
Vickers hardness
1.300 HV10
Crushing strength
2.000 MPa
Flexural strength
1.200 MPa
E modulus
210 GPa
Fracture strength
5 MPa*m1/2
CTE (25 – 500 °C)
(25 – 500 °C) 10.5 . 10-6 K-1
Composition
zirconia (ZrO2 + HfO2 + Y2O3) > 99.0 %
yttrium oxide (Y2O3) > 4.5 – ≤ 6.0 %
hafnium oxide (HfO2) ≤ 5.0 %
aluminum oxide (Al2O3) ≤ 0.5 %
other oxides ≤ 0.5 %
Minolta Spectrophotometer CM-2600d
Status Bezug: CRBEMM
Farbsystem: L*a*b*
Beobachter: 10°
1. Lichtart: D65 - 10°
45
Licht-Transmission [%]
40
35
30
25
1600
mittlere 3-Pkt.-Biegefestigkeit [MPa]
50
3-Punkt-Biegeprüfung nach EN ISO 6872
1400
1200
1000
800
20
ZENOSTAR
Zr Translucent offers excellent esthetics through its very
high light transmission, combined
600
15
ZENOSTAR Zr
Zr
ZENOSTAR Zr
ZENOTEC Zr
with outstanding
physical properties
such as above-average flexural
strength
andZENOTEC
improved
hydro400
Translucent
Bridge
Translucent
Bridge
10
thermal 5ageing.
(pure)
Translucent
0
200
Light-Transmission [%]
40
35
30
25
20
15
10
5
ZENOSTAR Zr
Translucent
(pure)
ZENOTEC Zr
Bridge
Translucent
0
Thickness of the sample: 0.6 mm
average 3-pt. bending strenght [MPa]
Minolta spectrophotometer CM-2600d
Status: CRBEMM
Color system: L*a*b*
Observer: 10°
1. type of light: D65 - 10°
45
Translucent
0
Probendicke: 0,6 mm
50
(pure)
1600
3-point bending test accord. to EN ISO 6872
1400
1200
1000
800
600
400
200
ZENOSTAR Zr
Translucent
(pure)
ZENOTEC Zr
Bridge
Translucent
0
Hydrothermal ageing
ZENOSTAR Zr Translucent posses excellent hydrothermal ageing properties. These excellent values are
achieved by improved raw material receipe and lowered sintering temperature.
Preparation of ZENOSTAR crowns and bridges
Occlusal wall thickness 0.5 – 1 mm
ZENOSTAR crowns and bridges allow gentle preparation of the tooth substance
and can be prepared in accordance with the guidelines in the ZENOTEC preparation
guide. This means that only a minimal amount of tooth substance (0.5 – 1 mm)
needs to removed from the occlusal and axial surfaces*, in order to guarantee a
long life for the restoration. All preparation sets suitable for zirconia can be used.
The conus angle of the prepared tooth stump should be approx. 4 °. This gives
Molar with minimum wall thickness
indicated
the best result when scanned in the lab scanner and ensures adequate mechanical
anchorage of the crown on the tooth stump. The greatest circumference of the
prepared tooth should be clearly visible in the area of the gingival prep margin.
A delicate chamfer preparation is recommended, since this is gentle on tooth substance and does not reduce the strength of the crown when compared to a more
pronounced chamfer preparation.*
An anatomical design which supports the cusps and a shoulder or chamfer preparation all round is also the preferred method for monolithic restorations.
Tangential preparations and prep margins which lie more than 1mm below the
Uniform chamfer
gingival margin, as well as undercut areas and largish cavities are detrimental to
the subsequent quality of the ZENOSTAR restoration.
* Study carried out by the University of Bad Homburg on the fracture strength of all-zirconia crowns in
relation to the crown design.
Circumferential shoulder preparation
Impression-taking, fitting, mastication simulation study
Impression-taking
The prep margin can be revealed and dried for impression-taking using, for
example, the double cord technique, a vasoconstrictor, electrosurgery or a laser.
Fitting
Impression-taking; contours are visible
ZENOSTAR restorations can be fitted using conventional or adhesive techniques.
Mastication simulation study
In a recent study, done at the University of Zürich, ZENOSTAR crowns
stood out by virtue of their low susceptibility to abrasion at the ceramic material
and at the opposing teeth during the cheewing simulation study.
Fitting / cementing
The abrasion properties were compared to those of natural dentition, a non-precious metal restoration and a veneer
on a zirconia framework. The test was carried with six test
specimens which were subjected to a force of 50 Newtons
for 1.2 million cycles in an aqueous environment whilst
undergoing temperature change. The 1.2 million cycles
correspond to five years’ wear. This simulation showed that
the polished ZENOSTAR crown suffered the lowest amount of
abrasion of the material and also caused the lowest amount
of wear on the opposing teeth. The study also revealed how
important polishing is. In the five-year mastication simulation, the polished ZENOSTAR crown was definitely less abrasive
than a CoCr alloy or a veneering ceramic and in this regard
even less abrasive than the natural tooth itself.
Study of abrasion behaviour at the opposing teeth*
* The study is being prepared for publication (Stawarczyk B, Özcan M [2010] ‘Abrasion
studies using various dental materials’, Dental Materials Unit, University of Zürich).
With thanks to: Dr. Hartmut von Blanckenburg (dental work) and Master Dental Technician Frank Wüstefeld (technical work)
ZENOSTAR Polishing Set Premium + Basic
The abrasion properties of ZENOSTAR restorations are determined by the smoothness of the
surface. Above all with occlusal corrections, it is essential to manually polish the surface to a
high shine.
With the ZENOSTAR Polishing Set, WIELAND offers a systematic polishing concept with highquality diamond polishing tools designed to give perfect results in next to no time. The set
contains instruments with grain sizes specially selected for all stages from material removal to
high-luster polish.
Das ZENOSTAR Polishing Set is available in two versions: Premium and Basic.
ZENOSTAR Polishing Set Basic
ZENOSTAR Polishing Set Premium
p
ractical
e
xclusive
a
ffordable
h
igh-quality,
design
stable box in sterilizable
stainless steel
ZENOSTAR Polishing Set Basic
ZENOSTAR Polishing Set Premium
ZENOSTAR – quality you can rely on
uses only raw materials and primary products of the
cording to ISO 13485. In this process the purity and composition of the initial material
and the production quality of the finished discs are constantly controlled. ZENOSTAR
Discs fulfill all the requirements of international product standards, the German Medical Devices Act and the European Medical Devices Directive 93/42/EEC and are entitled
to bear the CE mark.
The printed certificate lists all relevant information pertaining to the individual ZENOSTAR restoration. In addition to the names of the patient and the customer, this includes
the type of restoration, type of material and the individual ID of the blank. The order
number and the dates of scan and design are also documented here. It therefore provides
a complete quality management record from the dental practice and the lab.
Ask your dental lab about ZENOSTAR marketing for your patients.
U.S .
37 ,
32
61
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red and tested within the framework of a monitored quality management system ac-
IS C
the patented ZENOTEC and ZENOSTAR ceramic discs. ZENOSTAR discs are manufactu-
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The WIELAND Material Certificate is your guarantee offering top quality when using
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required by the German Medical Devices Act
T IS
ZENOSTAR blank can be traced back to the original raw material as
ThE pATEN
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7, 604, 759
Patented
CeramiC disCs*
*
ensure that a consistent high material quality is maintained.
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quality controls before, during and after the production processes
ZENOSTAR CE
ICS
C
onstant
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highest purity and quality.
ZEN
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Zenostar – Simple. Beautiful. Strong.
Adopt a clear line –
Dental lab:
with just one ceramic material.
Demand biocompatibility –
the ZENOSTAR high performance
ceramic is 100 % biocompatible.
Further information from:
530118e.01.11/11
www.zenostar.de