Ivoclar Vivadent PS Empress CAD Chairside User Manual
®
Empress
IPS
CAD
Instructions for Use
chairside
Table of Contents
IPS Empress® CAD – Product Information 4
Material
Uses
Composition
Block concept
Product overview for CEREC
Preparation guidelines and minimum thicknesses
IPS Empress® CAD – Overview of the Treatment Procedure 13
Overview of the treatment procedure
Shade determination
Intra-oral imaging
Milling
Staining and veneering
Procedure
Overview of the Treatment
Ceramic firing
Etching and silanating
Cementation
Polishing
CAD Restorations
®
Fabrication of IPS Empress
IPS Empress® CAD – Inlays / Onlays – polished 20
Preparation
Finishing
Polishing
IPS Empress® CAD – Inlays / Onlays – stained / glazed 24
Finishing and preparing for stain and glaze firing
2-in-1 technique and stain and glaze firing in one step
Corrective firing
IPS Empress® CAD – Veneers / Crowns – stained / glazed 27
Finishing
Preparing for staining
Stain and characterization firing
Glaze firing
Corrective firing
IPS Empress® CAD – Veneers / Anterior Crowns – cut-back and layered 32
Application of the IPS Empress Esthetic Veneer materials
Cut-back technique
Preparing for veneering
Wash firing
Incisal / Transparent firing
Finishing and preparing for stain and glaze firing
Stain and glaze firing
Corrective firing
IPS Empress® CAD – General Information 41
Preparing for cementation
Firing parameters
Combination table
2
®
IPS
Empress
Nearly 20 years ago, IPS Empress revolutionized the processing of ceramic and thanks to the many advantages of the
leucite- reinforced glass-ceramic, such as esthetics, IPS Empress has been established as the "benchmark". More than
33 million restorations fabricated of IPS Empress throughout the world and the use of "IPS Empress" as a synonym for
all-ceramics speak for the durable life-like appearance, the ongoing success, and the high quality standard of the material.
In addition to the tried-and-tested PRESS technology, the CAD/CAM technology has also developed in the area of allceramics. In order to supply the "benchmark" for this technology as well, the IPS Empress System comprises products for
both processing technologies. You will be able to benefit from roughly 20 years of clinical experience and convincing
esthetics, irrespective of whether the restorations were fabricated with the PRESS or CAD/CAM technique.
IPS Empress Esthetic is available for the PRESS technology, while IPS Empress CAD is used in the CAD/CAM
techno logy. Both products consist of the highly esthetic, leucite-reinforced glass-ceramic that has been clinically tried-
and-tested for many years. The two ceramics are characterized by excellent strength values and outstanding esthetic
appearance. They may thus be used for the fabrication of full-contour single-tooth restorations, such as inlays, onlays,
veneers, and crowns.
Both products may subsequently be stained and/or glazed using IPS Empress Universal Shade / Stains / Glaze, or
individually veneered using the IPS Empress Esthetic Veneer layering ceramic.
– the Original
In this way, the IPS Empress System will remain synonymous for highly esthetic, full-contour all-ceramic restorations,
irrespective of the processing technology.
PRESS
Technology
Empress
IPS
®
CAD/CAM
Technology
Empress CAD
IPS
Esthetic
Empress
IPS
®
Esthetic Veneer
Empress
IPS
®
Universal Shade / Stains
3
Empress® CAD
IPS
Product Information
Material
IPS Empress CAD is used for the fabrication of highly esthetic,
full-contour single-tooth restorations by means of the CAD/CAM
technology.
IPS Empress CAD blocks are made of a leucite-reinforced glassceramic which consists of a glass and a crystal phase. Leucite crystals
of few microns evenly grow in a multi-stage process directly from the
amorphous glass phase. During the fabrication of the blocks, the
semi-finished product in powder form is pressed to blocks in a fully
automated procedure, which enables a maximum of homogeneity.
Given the difference in the coefficients of thermal expansion (CTE)
between the glass phase and the crystal phase (leucite), cooling after
sintering produces compressive stress in the glass phase. This
mechanism results in an increase in strength and enables IPS Empress
CAD to achieve a flexural strength of 160 MPa. This type of material
has been successful as well as proven for almost 20 years. The milled
restorations feature excellent accuracy of fit and a homogeneous
surface structure. Subsequently, the restorations may be stained
using IPS Empress Universal and/or individually veneered using IPS
Empress Esthetic Veneer.
CTE (100–400 °C) [10-6 /K] 16.6
CTE (100–500 °C) [10-6 /K] 17.5
Flexural strength (biaxial) [MPa]* 160
Fracture toughness [MPa m
Vickers hardness [MPa] 6200
Chem. resistance [µg/cm2]* 25
Classification: Ceramic Materials Type II / Class 2a
*according to ISO 6872
More information about the authorized CAD/CAM systems is available on the Internet from www.ivoclarvivadent.com.
4
0.5
] 1.3
Uses
Indications
IPS Empress CAD blocks can be used for the following adhesively cemented restorations. Depending on
the type and size of the restoration, the respective HT (High Translucency), LT (Low Translucency), or
Multi Block is recommended. IPS Empress CAD restorations may be cemented and either polished,
stained / glazed, or veneered.
HT Blocks
(High Translucency)
Higher translucency and
chameleon effect
Low brightness value
– Inlays
– Onlays
– Veneers
– Anterior and posterior crowns
– Partial crowns
– Veneers
LT Blocks
(Low Translucency)
Lower translucency and
chameleon effect
Higher brightness value
Multi Blocks
True-to-nature transition of
shade, translucency,
and fluorescence
– Anterior and posterior crowns
– Partial crowns
– Veneers
For further processing of IPS Empress CAD restorations, users have the following options:
– esthetic staining and glazing of full-contour restorations using IPS Empress Universal Shade, Stains,
and Glaze Pastes
– esthetic veneering in the incisal third of reduced restorations (veneers and anterior crowns) using
IPS Empress Esthetic Veneer materials.
Contraindications
– Bridge constructions
– Conventional cementation
− Very deep sub-gingival preparations
− Patients with severely reduced residual dentition
– Parafunctions
– Fully (circularly) veneered anterior and posterior crowns using IPS Empress Esthetic Veneer
– Any other use not listed in the indications for IPS Empress CAD
Important processing restrictions
Failure to observe the following restrictions may compromise the success
achieved with IPS Empress CAD:
– The required minimum thicknesses for IPS Empress CAD restorations must be observed.
– The maximum layer thickness of IPS Empress Esthetic Veneers layering materials must not be exceeded.
– IPS Empress CAD restorations must not be stained using materials other than IPS Empress Universal
Shade, Stains, and Glaze.
– Powder materials must not be mixed with paste materials.
– The blocks must not be milled in a non-authorized CAD/CAM system.
Side effects
If patients are known to be allergic to any of the ingredients of IPS Empress CAD, the material should
not be used.
5
Composition
– IPS Empress CAD Blocks
Components: SiO2
Additional contents: Al2O3, K2O, Na2O, CaO, and other oxides, pigments
– IPS Empress Esthetic Veneer
Components: SiO2
Additional components: Al2O3, K2O, Na2O, CaO, oxides and pigments
– IPS Empress Universal Shade, Stains and Glaze Paste
Components: Oxides, glycerine, butandiol
– IPS Empress Esthetic Veneer Build-Up Liquid
Components: Water, butandiol and chloride
– IPS Empress Universal Glaze and Stain Liquid
Components: Butandiol
– IPS Contrast Spray Chairside
Components: Pigment suspension in ethanol; the propellant is a fluoridated hydrocarbon
– IPS Natural Die Material
Components: Polyester urethane dimethacrylate, paraffin oil, SiO2 and copolymers
– IPS Natural Die Material Separator
Components: Wax dissolved in hexane
– IPS Ceramic Etching Gel
Components: Hydrofluoric acid
Warning
– Butandiol is irritating – avoid contact with skin and eyes and do not inhale the vapours.
– Hexane is highly flammable and detrimental to health. Avoid contact with skin and eyes. Do not
inhale the vapours and keep away from sources of ignition.
– Do not inhale ceramic grinding dust during processing – use suction equipment and a face mask.
– Etching gel contains hydrofluoric acid. Avoid contact with skin, eyes, and clothing at any time, since
the material is highly toxic and corrosive. The etching gel is intended for professional use only and
must not be applied intra-orally (in the oral cavity).
6
Block concept
IPS Empress CAD Blocks
The shading and translucency control of the IPS Empress CAD Blocks is based on the well-known translucency concept. The
system is built on the A-D, Chromascop, and Bleach BL shade guides.
The IPS Empress CAD Blocks are available in two degrees of translucency and as a polychromatic block. The blocks are
precisely coordinated with the respective indications and thus enable excellent shade match with the corresponding shade
guide. Depending on the indication, the blocks provide a true-to-nature chameleon effect, life-like brightness value, or a
natural shade transition.
IPS Empress CAD HT (High Translucency)
These blocks are available in the 9 most popular A–D shades, 3 Chromascop shades, and 4 sizes. Given their high
translucency, HT blocks are ideally suitable for the fabrication of smaller restorations (e.g. inlays and onlays). Restorations
made of HT blocks impress users with their true-to-nature chameleon effect and outstanding adaptation to the residual
tooth structure. The blocks demonstrate life-like fluorescence in order to permit optimum integration into the natural
residual tooth structure under different light conditions.
A–D
Chromascop
IPS Empress CAD LT (Low Translucency)
These blocks are available in the 9 most popular A–D shades, 3 Chromascop shades, 4 Bleach BL shades, and 4 sizes. Given
their high brightness value compared to the HT blocks, the LT blocks are ideal for the fabrication of larger restorations (e.g.
anterior and posterior crowns). Restorations made of LT blocks impress users with their true-to-nature brightness value and
chroma, which prevents a greying of the incorporated restorations. The blocks demonstrate a life-like fluorescence in order
to enable optimum integration into the natural environment, even under varying light conditions. Restorations made of LT
blocks are also ideally suitable for the cut-back technique.
A–D
Chromascop Bleach BL
IPS Empress CAD Multi
These blocks are available in the 5 most popular A–D shades and 3 sizes. Given the
natural shade gradient from the dentin to the incisal areas, restorations made of
IPS Empress CAD Multi Blocks demonstrate a maximum of esthetics and naturalness.
The true-to-nature opacity and translucency gradient enables a multitude of esthetic
possibilities. The IPS Empress CAD Multi Block features a transition of fluorescence very
similar to that of natural teeth, which results in excellent integration into the residual
dentition. Given the innovative combination of true-to-nature transition of shade,
translucency, and fluorescence, highly esthetic restorations are fabricated in an easy way.
The available product range may vary from country to country and is also dependent on the CAD/CAM
system used.
7
HT
High Translucency
LT
Low Translucency
Multi
V 12
I 8
I 10
I 12
C 14
Overview of blocks – shades and sizes*
IPS Empress CAD Blocks are available in the following shades and sizes as a Refill of 5 blocks.
A–D
A2
A1
A3
A3.5 B1 B2 B3 C2 D3
C 14 L
HT
High Translucency
LT
Low Translucency
Multi
V 12
I 8
I 10
I 12
C 14
Chromascop Bleach BL
200
100
300
BL1 BL2 BL3 BL4
C 14 L
8
*The available product range may vary from country to country and may depend on the CAD/CAM system used.
Translucency
Opacity
Overview of blocks – translucency
A–D Shades
Translucency
Opacity
A1 A2 A3 A3.5 B1 B2 B3 C2 D3
Chromascop
100 200 300
HT Block LT Block
Bleach BL
BL1 BL2 BL3 BL4
9
Preparation guidelines and minimum thicknesses
100-120°
>1.5>1.
5
>1.5>1.
5
5
>1.5
4°
100-120°
>1.5>1.
5
90°
>1.5
>1.
5
100-120°
>1.5>1.
5
>1.5
>1.
5
>1.5>1.
5
5
Successful results can only be achieved with IPS Empress CAD if the preparation guidelines and layer thicknesses are strictly
observed. The following minimum thicknesses are required for IPS Empress CAD restorations.
Inlays and onlays
It is absolutely necessary that you take the static and dynamic antagonist contacts into consideration. Do not locate the
preparation margins on centric antagonist contacts.
Observe a preparation depth of at least 1.5 mm and an isthmus width of at least 1.5 mm in the fissure area. Prepare the
proximal box with slightly diverging walls and observe an angle of 100–120° between the proximal cavity walls and the
prospective proximal inlay surfaces. For inlays with pronounced convex cavity walls without adequate support by the
proximal shoulder, avoid marginal ridge contacts. Round out internal edges in order to prevent stress concentration within
the ceramic material. Eliminate the proximal contacts on all sides. Do not prepare slice-cuts or feather edges.
4°
>1.5
100-120°
>1.5>1.
Observe at least 2 mm of space in the cusp areas. Ensure that the shoulder does not show any inclinations, i.e. it must
show a 90° angle to the residual tooth structure. Onlays are indicated if the preparation margin is less than approximately
0.5 mm away from the cusp tip, or if the enamel is severely undermined.
>2.0
4°
>1.5
90°
>1.5
>1.
10
2.0
> 0.6
> 0.7
>1.0
>1.0
1.5
1.5
>1.0
1.5
2.0 2.0
1.5
>1.0
>1.0
1.5
>1.5
4°
100-120°
>1.5>1.
5
>1.5
>2.0
90°
>1.5
4°
>1.
5
1.0
> 0.6
> 0.7
>1.0
1.5
2.0 2.0
1.5
>1.0
>1.0
1.5
100-120°
>1.5>1.
5
90°
>1.5
>1.
5
1.5
2.0 2.0
1.5
>1.0
>1.0
1.5
>1.5>1.
5
>1.5
>1.
5
1.5
2.0 2.0
1.5
>1.0
>1.0
1.5
>1.5
4°
100-120°
>1.5>1.
5
>1.5
>2.0
90°
>1.5
4°
>1.
5
1.5
2.0 2.0
1.5
>1.0
>1.0
1.5
100-120°
>1.5>1.
5
90°
>1.5
>1.
5
>1.5>1.
5
>1.5
>1.
5
Veneers
If possible, the preparation should be entirely located in the enamel. Do not locate the incisal preparation margins in the
area of the abrasion surfaces or dynamic occlusal surfaces. You can achieve a controlled enamel reduction by preparing
orientation grooves using a depth marker. You are not required to eliminate the proximal contacts.
For preparations without embrasure of the incisal edge (only labial reduction), observe a preparation depth of at least
0.6 mm in the cervical area and of at least 0.7 mm in the labial area.
For preparations with oro-incisal embrasure of the incisal edge (labial / incisal reduction), observe a preparation
depth of at least 0.6 mm in the cervical area and of at least 0.7 mm in the labial area. Reduce the incisal edge by 1.0 mm.
The extent of the incisal reduction depends on the desired translucency of the incisal area to be built up. The more
transparent the incisal edge of the intended veneer, the more pronounced the reduction should be. Discoloured teeth
may require more preparation.
> 0.6
>0.7
>0.7
> 0.6
> 0.7
>1.0
Anterior and posterior crowns
Reduce the anatomical shape evenly while observing the given minimum thicknesses. Prepare a circumferential shoulder
with rounded inner edges or a chamfer. Observe a width of the circular shoulder/chamfer of at least 1 mm. Reduce the
crown third – incisal and/or occlusal – by 2 mm. For anterior crowns, reduce the labial and/or palatal / lingual part of the
tooth by at least 1.5 mm. Ensure that the incisal edge of the preparation is at least 1.0 mm (milling tool geometry) in order
>1.0
1.5
1.0
>1.0
1.5
2.0
to permit optimum milling of the incisal area during CAD/CAM processing.
2.0 2.0
1.5
1.5
>1.0
1.5
>1.0
11
Empress® CAD
IPS
Overview of the Treatment Procedure
In addition to IPS Empress CAD Blocks, coordinated products are available for the entire chairside treatment procedure. Products coordinated
with each other and the individual working steps increase the processing comfort and the overall quality of the restoration. This enables the
fabrication of highly esthetic and durable IPS Empress CAD restorations with a maximum of efficiency and cost effectiveness.
For information on the CAD/CAM processing, please refer to the respective Instructions for Use and the manuals of the respective CAD/CAM
system. The instructions of the manufacturer must be observed.
Treatment Pocedure
Shade Determination
Intra-Oral Imaging
Milling
Staining and Veneering
Ivoclar Vivadent Products
Tooth Shade A–D, Chromascop and Bleach BL
Determination Shade Guide
Die Shade IPS
Determination To determine the shade of the
OptraGate
Provides easy access to an enlarged treatment area by circular retraction of lips and cheeks
OptraDam®
Anatomically shaped, 3-dimensional rubber dam
IPS® Contrast Spray Chairside
Enables optimum imaging through detailed definition of
the edges
IPS Empress® CAD Bocks
Leucite-reinforced ceramic blocks for the CAD/CAM
technology
IPS Empress Direct® Color
Light-curing composite stains for internal characterizations
IPS Empress
Opalescent ceramic materials for individual, esthetic
adjustments
IPS Empress
Stains in paste form for an individualized surface design
®
To determine the tooth shade of the
non-prepared tooth
®
Natural Die Material
prepared tooth
®
Esthetic Veneer
®
Universal Shade / Stains, Glaze
IPS® Object Fix Putty / Flow
Auxiliary firing paste to support all-ceramic restorations
Ceramic Firing
Etching and Silanating
Cementation
Polishing
12
Programat
The ceramic furnace for optimum firing results
IPS® Ceramic Etching Gel
For the fabrication of retentive bonding surfaces on
all-ceramic restorations
Monobond
Produces silanated bonding surfaces on etched all-ceramic
restorations
OptraDam®
Anatomically shaped, 3-dimensional rubber dam
Variolink
Proven adhesive cementation systems
Bluephase
The cordless high-performance LED light for all indications
OptraFine
High-performance, chairside diamond polishing system for
ceramic materials
®
CS2
®
Plus
®
II, Variolink® Veneer, Multilink® Automix
®
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