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Instructions for use
HeraCeram Zirkonia® Press-to-Zirconia
Veneering of zirconium dioxide frameworks
using the press-on technique
Giving a hand to oral health.
HeraCeram Zirkonia® Press-to-Zirconia –
Veneering of zirconium dioxid frameworks using
the press-on technique
With the introduction of Press-to-Zirconia, the HeraCeram Zirkonia product line has been
expanded. It now also offers the option of fabricating ceramic veneers using either the classic
layering technique or the press-on technique.
14 Steps to a Finished Ceramic Veneer Restoration
Table of contents
2
1. Indication
Page 04
2. Preparing the framework surface
Page 04
3. Applying the liner layer
Page 04
4. Stain selection
Page 05
5. Anatomical modelling
Page 06
6. Positioning in the ring the object to be pressed
Page 11
7. Investing
Page 12
8. Pre-heating
Page 13
9. Pressing
Page 16
10. Cooling
Page 19
11. Divesting
Page 19
12. Trimming
Page 22
13. Staining technique
Page 23
14. Staining – layering technique
Page 26
Overview of firing programs
Page 28
3
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
1. Indication
HeraCeram Zirkonia Press-to-Zirconia is designed for fabricating ceramic veneers on zirconium
dioxide frameworks using the press-on technique.
2. Preparing the framework surface
Press-to-Zirconia’s shades are designed for white, non stained zirconium dioxide frameworks.
Surface conditioning, e.g., blasting with aluminium oxide, is neither required nor recommended.
3. Applying the liner
In the press-on technique, the usual application of a Zr-adhesive is not required. Based on the
desired tooth shade (see table), apply the ready use liner directly onto the zirconium dioxide
surface in a thin, homogeneous layer to achieve an optimal base colour. Then fire at a firing
temperature of 1030°C (see firing table).
Application of a thin liner layer for the more intensive colours.
4
After firing, the liner layer shows a structured lustre.
■■
No liner is required for the lighter shades A1, B1, C1 and D2.
4. Press-to-Zirconia stain selection
V-SHADE
LINER
PRESS INGOT
BODY STAINS
A1
–
PK Light
50 % A 50% glaze
A2
Liner A
PK A
Glaze
A3
Liner A
PK A
A 1 layer
A3,5
Liner A
PK A
A 2 layers
A4
Liner A
PK A
A 3 layers
B1
–
PK Light
50 % B 50% glaze
B2
Liner B
PK B
Glaze
B3
Liner B
PK B
B 1 layer
B4
Liner B
PK B
B 2 layers
C1
–
PK Light
50% C 50% glaze
C2
Liner C
PK C
Glaze
C3
Liner C
PK C
C 1 layer
C4
Liner C
PK C
C 2 layers
D2
–
PK Light
A 1 layer
D3
Liner A
PK Light
C 1 layer
D4
Liner B
PK C
50% C 50% olive
5
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
The weight of the frameworks is then determined and documented.
5. Anatomical wax-up
■■
Now continue to create the partially or fully anatomical restoration by generating a customised
wax-up or using CAD/CAM fabricated plastic models or mock ups.
Zirconium dioxide framework with anatomical CAD/CAM fabricated mock up.
6
Using cervical wax, the mock up is secured on the framework, and the transitions are covered.
The mock up is ready for sprue application.
■■
■■
■■
■■
hen creating the model, only use wax, preformed wax patterns and plastics that are
W
specifically approved for the press-on technique by the manufacturer.
A minimum thickness of 0.4 mm is required to ensure satisfactory pressing results.
minimum thickness of 0.8 mm is required for sufficient colour saturation and masking of
A
the framework structure.
The press sprues should be at least 3 mm in diameter.
7
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
For the wax-up, first apply a layer of margin wax.
Wax-up with fully anatomical design.
8
Attach wax wires to the incisal/occlusal surfaces sin an axial direction.
Two pressing sprues are recommended for larger units such as molar crowns.
In bridges, there should be at least one pressing sprue per pontic.
9
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
Then weigh the complete object to be pressed.
■■
Calculation of the required amount of press ceramic
Weight of the total object minus framework weight = weight of the wax-up/mock-up
(e.g. wax weight)
Up to 0.6 g – 1 pellet
Up to 1.3 g – 2 pellets
For larger objects, use an additional press pellet for every 0.6 g of additional wax weight.
10
6. Positioning in the ring the object to be pressed
The objects to be pressed are aligned with the channel for the plunger in such a way that direct pressing is
achieved, i.e., the major direction of flow does not change.
min. 10 mm
min.
10 mm
min. 10 mm
min.
10 mm
When positioning the units to be pressed on the ring former, ensure a minimum distance of 10 mm to the side
and top of the ring.
The objects should be at least 5 mm apart from one another.
11
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
7. Investing
■■
■■
We recommend Heravest Press (REF 6601 6420) for investing the objects. Please observe
the relevant manufacturers’ instructions if using other investment materials for pressing.
o ensure trouble free separation of the investment material from the ring former, grease the
T
surfaces of the parts of the investment ring with Vaseline or silicone oil before every use.
First, fill the crowns.
After filling, the ring level is placed on top.
Important: To avoid damage to the ring and resulting cracking of the ring, do not move
or transport the ring during the setting phase.
12
8. Preheating
After the setting process, the parts of the ring are carefully removed.
13
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
With careful rotation, the ring former can be easily removed without damaging the ring.
The bottom of the ring is smoothed to allow it to stand securely and vertically
■■
■■
14
fter the setting phase, carefully remove the parts of the ring, and trim the floor of the ring,
A
so that it can rest securely and vertically. The preheating furnace should be free of
contamination and feature a corrugated furnace insert.
Do not preheat the press pellets or the single use plunger.
The ring is then placed into the preheating furnace. The temperature depends on the investment material used
(linear or speed heating).
The preheating period is at least 60 minutes at 850°C, starting from the time the final temperature
is reached again.
Important: Larger rings require longer pre heating.
15
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
9. Pressing
■■
pressing, activate the pressing program in the ceramic press furnace, and set the
For
pressing temperature to 990°C.
Place the required amount of press pellets in the casting ring …
16
… and then position the plunger.
■■
This should be done quickly to prevent the ring from cooling.
Immediately place the ring into the press furnace and start the press program.
17
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
Ist es korrekt, dass der
Tabellenkopf leer ist?
Press programs
General
Cergo Press
EP 500
Touch & Press
Vario Press 100
Start temperature
700 ºC
700 ºC
700 ºC
700 ºC
700 ºC
Vacuum start
700 ºC
700 ºC
700 ºC
700 ºC
700 ºC
Vacuum
50 hPa
50 hPa
50 hPa
50 hPa
Cont. Vac.
Heat rate
50 ºC/min
50 ºC/min
50 ºC/min
50 ºC/min
50 ºC/min
Press temperature
990°C
990°C
990°C
990°C
990°C
Holding time
20 min
20 min
20 min
20 min
20 min
Press time
12 min
12 min
0 min*
12 min
12 min
Press pressure
Depends on furnace 4,5 – 5 bar
4,5 – 5 bar
2,5 – 2,7 bar
4,5 – 5 bar
Important: Larger rings require longer holding time.
Press-i-dent
Stand by program
L9
C700
Pressing
L9
C700 V9
T300
T9
T9
T050•C990
Important: Larger press volumes require longer press time!
18
T1200
L94
T720
V0
C0
L0
T2
C600
10. Cooling
After pressing, remove the ring from the press furnace and allow to cool to room temperature
(preferably on a cooling rack).
11. Divesting
Use a plunger to determine the vertical position of the pressed objects in the ring and mark it on the ring with a pen.
19
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
Using a suitable large separating disc, such as a model casting separating disc, deeply cut the investment
material along the mark, and separate the two parts.
■■
20
Rough divesting: Blast with glass beads (50 µm, 4 bar, do not use reusable blasting material)
to remove the investment material until you get close to the pressed objects.
Do not expose the objects.
To further divest, continue to expose the objects at a reduced pressure (max. 1.5 bar) using 50 µm glass beads.
After divesting.
■■
void focused blasting at specific points as overheating may occur.
A
Do not use aluminium oxide. 21
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
12. Trimming
The sprues are always separated and smoothed under water cooling, at low pressure and low speed.
(Please use heatless grinding instruments or new diamonds if working without water cooling.)
Then restore the anatomical shape of the sprue attachment points. ■■
■■
22
Place the objects on the model, check contact points, and correct if necessary.
Finally, finish the restoration’s surface to achieve a uniform surface, and apply the desired
surface texture.
13. Staining technique
■■
After finishing, thoroughly clean (e.g., steam clean) and dry the objects.
Initially, the ceramic surface is lightly coated with the stain liquid MF. This creates a realistic colouring and
facilitates colour control when applying stain.
To achieve uniform surface quality, the veneering surface can initially be covered in a very thin coat of glaze.
Note: For further shading please see the stain selection chart on page 5.
23
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
Colour is then applied to the dentine area using the dentine stains (Body Stains BS) of the respective colour group
(see stain selection chart on page 5).
This increases the optical differentiation of dentine and incisal area and results in the appearance
of a multi layer veneer.
24
■■
Then
perform the dentine stain firingand final firing at 850°C
(see firing recommendations starting on pages 28–31).
Completed posterior bridge viewed from a buccal and occlusal direction.
25
HeraCeram Zirkonia® Press-to-Zirconia –
14 Steps to a Finished Ceramic Veneer Restoration
14. Layering technique
In the layering technique, the restoration is only partially fabricated by the press technique. Either the model of
the restoration is already reduced in size or it is cut-back after pressing.
■■
■■
26
As needed, enhance the chroma of the dentine unit with the respective dentine stains,
accentuate mamelon structures with the stains, and fix by stain firing.
Afterwards, complete the veneered restoration by layering with the HeraCeram Zirconia
material (Enamel, Transpa and Opal materials) as usual. Please refer to the HeraCeram
Zirkonia instructions for use.
Completed anterior crown with customised enamel layering.
27
HeraCeram Zirkonia® Press-to-Zirconia –
Firing programs
General firing program
Liner
Stain and Glaze Bake
Pre-heating/start temperature
600°C
400°C*
Pre-drying and pre-heating time
6 min
5 min
Heat rate
100°C/min
100°C/min
Final temperature
1030°C
850°C
Holding time
2 min
30 sec
Vacuum start
600°C
400°C*
Vacuum stop
1030°C
850°C
Liner
Stain and Glaze Bake
START
600°C
400°C*
DRY
5 min
4 min
PRE HEAT
1 min
1 min
HEAT RATE
100°C/min
100°C/min
HIGH TEMP
1030°C
850°C
HOLD
2 min
30 sec
TEMPER
–
–
TEMP HOLD
–
–
COOL TIME
–
–
V ON
600°C
400°C*
V OFF
1030°C
850°C
V HOLD
–
–
Heramat C C2; C3 and C3 Press
* When using Stains universal: Pre Heat and Vacuum Start Temp 600°C
28
Austromat 3001 and Press-i-dent
Liner
C600
Stain and Glaze Bake
C400*
T180
T120• L9
T120
T120• L9
T60
T60
V9
T099 • C1030
V9
T099• C850
T120
T30
V0
V0
C0
C0
L0
L0
T2
T2
C400
C400
Austromat M
START
END
Liner
600
3
2
1
9
99
1030
2:00
0
0
Stain and Glaze Bake
400*
0
4
1
9
99
850
0:30
0
0
Dry
min:sec
Close
min:sec
Pre-Heating Pre-Heating Temp 1
°C
min:sec
°C
Temp 1
°C/min
Temp 1
min:sec
VAC
°C
VAC
%
VAC
min:sec
Liner
03:00
02:00
600
01:00
1030
99
02:00
860
100
00:00
Stain and Glaze Bake
00:00
04:00
400*
01:00
850
99
01:00
850
100
00:00
Austromat D624/644/654
* When using Stains universal: Pre Heat and Vacuum Start Temp 600°C
29
HeraCeram Zirkonia® Press-to-Zirconia –
Firing programs
Multimat MC II/ Mach 2
Liner
Final and dentine stain firing
Pre-heating temperature
600°C
400°C*
Drying
5.0 min
5 min
Pre-heating
1.0 min
1.0 min
Vacuum time
1.0 min
0.1 min
Firing time
2.0 min
1.0 min
Firing temperature
1030°C
850°C
Heat rate 100°C/min
100°C/min
Vacuum
50hPa
50hPa
Liner
Final and dentine stain firing
Standby temperature
500°C
400°C*
Temperature rise
100
100
Firing temperature
1030°C
850°C
Closing time
5
4
Holding time 2
0,5
Vacuum ON 600°C
400°C
Vacuum OFF 1029°C
849°C
Programat P90 / P95
* When using Stains universal: Pre Heat and Vacuum Start Temp 600°C
30
Programat X1/ EP 600
Liner
Final and dentine stain firing
B
Stand-by temperature
500°C
400°C*
S
Closing time
5 min
4 min
t
Temperature rise
100°C/min
100°C/min
T
Firing temperature
1030°C
850°C
H
Holding time
2 min
30 sec
V%
Vacuum quality 100 %
100 %
VE
Vacuum ON
600°C
400°C
VA
Vacuum OFF
1°C under T
1°C under T
Liner
Final and dentine stain firing
Gemini II or HT / HT Press
Low temp
[°C]
600
400*
Up time
[min]
5:00
4:00
Preheat time
[min]
1:00
1:00
Heat Rate
[°C/min]
100
100
Vac start
[°C]
600
400
Vac end
[°C]
1030
850
Vac delay
[min]
0:00
0:00
Vac level
[mmHg]
710
710
High temp
[°C]
–
–
Temp. delay
[min]
0:00
0:00
* When using Stains universal: Pre Heat and Vacuum Start Temp 600°C
31
Contact in United Kingdom
Heraeus Kulzer Ltd.
Heraeus House
Albert Road, Newbury
Berkshire, RG14 1DL
Phone +44 1635 30500
Fax +44 1635 524622
Sales.uk@kulzer-dental.com
www.heraeus-kulzer.com
Contact in Australia & New Zealand
Heraeus Kulzer Australia Pty Ltd
Level 9, Avaya House, 123 Epping Road
Macquarie Park NSW 2113
Phone +61 2 8875-7765
sales.mckulzer@kulzer-dental.com
www.heraeus-kulzer.com
Contact in Scandinavia
and in the Baltic States
Heraeus Kulzer Nordic AB
Florettgatan 18
SE-250 24 Helsingborg
Phone +46 42 45307-00
Fax +46 42 45307-01
nordicdental@kulzer-dental.com
www.heraeus-kulzer.se
Contact in de Benelux
Heraeus Kulzer Benelux B.V.
Fustweg 5, 2031 CJ Haarlem
Postbus 986, 2003 RZ Haarlem
The Netherlands
Phone +31 23 54342-50
Fax +31 23 54342-55
info-benelux@kulzer-dental.com
www.heraeus-kulzer.be
Contact in Japan
Heraeus Kulzer Japan Co., Ltd.
TSK Building 2F
4-8-13 Hongo, Bunkyo-Ku
Tokyo 113-0033, Japan
Phone +81 3 580321-51
Fax +81 3 580321-50
information.hkip@kulzer-dental.com
www.heraeus-kulzer.co.jp
Contact in Austria & Swiss
Heraeus Kulzer Austria GmbH
Nordbahnstrasse 36/2/4/4.5
A-1020 Wien
Phone +43 1 4080941
Fax +43 1 4080941-75
officehkat@kulzer-dental.com
www.heraeus-kulzer.at
www.heraeus-kulzer.ch
Contact in Germany
Heraeus Kulzer GmbH
Grüner Weg 11
63450 Hanau
Phone 0800 4372-522
Fax 0800 4372-329
info.lab@kulzer-dental.com
www.heraeus-kulzer.de
66044291 GB 11.2014 ORT/RM
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