Ivoclar Vivadent IPS e.max CAD Labside User Manual

CAD

all ceramic

all you need

I N S T R U C T I O N S F O R U S E

L A B S I D E

Table of Contents

3 IPS e.max System – one system for every indication

CAD

PR OD UC T

IN FO RM ATI ON

4 Product Information

Material
Usage
Composition
Scientific Data
Block Concept
CAD/CAM Partners

9 Clinical steps, model preparation, CAD/CAM process

Overview of the Clinical Working Steps, Fabrication Process
Shade Determination — Tooth Shade, Shade of the Prepared Tooth
Preparation Guidelines
Model and Tooth Preparation
Layer Thicknesses
Design Guidelines for the Restoration
CAD/CAM Processing

18 Staining Technique

Finishing
Crystallization and Stain/Glaze Firing
– Option A: Crystallization and Stain/Glaze Firing in One Step with Glaze Paste
– Option B: Crystallization and Stain/Glaze Firing in One Step with Glaze Spray
– Option C: Crystallization and Separate Stain/Glaze Firing

35 Cut-Back Technique

Finishing and Preparation for Crystallization
Crystallization
Veneering with IPS e.max Ceram

PR AC TI CA L NO TE S ON P RO CE SS IN G

-

IN FO R

MAT IO N

CAD

45 Layering Technique

Finishing and Preparation for Crystallization
Crystallization
Veneering with IPS e.max Ceram

53 Seating and Follow-Up Care

Possibilities for Cementation
Preparing for Cementation
Care notes

56 General Information

Frequently Asked Questions
Table on Block Selection
Crystallization and Firing Parameters

2

®

e.max

IPS

System –

all you need

IPS e.max is an innovative all-ceramic system which covers the entire all-ceramic indication range – from
thin veneers to 10-unit bridges.

IPS e.max delivers high-strength and highly esthetic materials for the Press and the CAD/CAM
technologies. The system consists of innovative lithium disilicate glass-ceramics used mainly for single­tooth restorations and high-strength zirconium oxide for large-span bridges.

Every patient situation presents its own requirements and objectives. IPS e.max meets these
requirements. Due to the system components you obtain exactly what you need.
– The components of the Press technology include the highly esthetic IPS e.max Press lithium disilicate

glass-ceramic ingots and the IPS e.max ZirPress fluorapatite glass-ceramic ingots for the fast and
efficient press-on-zirconia technique.

– Depending on the case requirements, two types of materials are available for CAD/CAM techniques:

the innovative IPS e.max CAD lithium disilicate blocks and the high-strength zirconium oxide IPS e.max
ZirCAD.

– The nano-fluorapatite layering ceramic IPS e.max Ceram, which is used to characterize/veneer all

IPS e.max components – glass or oxide ceramics – completes the IPS e.max System.

IPS e.max CAD

The shades and translucency levels of the IPS e.max CAD blocks are based on the overarching IPS e.max
shade system. The system has a flexible design and can be used in conjunction with the A-D,
Chromascop as well as Bleach BL shade guides.

The shades of the Press ingots and CAD/CAM blocks offered in the IPS e.max System are all coordinated
with each other. They are available in different degrees of opacity and/or translucency. The selection of
the translucency level is based on the clinical requirements (shade of the prepared tooth, desired tooth
shade) presented by the patient, as well as the desired processing technique (layering, cut-back, staining
technique).
The more opaque HO (only IPS e.max Press) and MO blocks are predominantly suitable for the layering
technique, while the more translucent LT and HT blocks are used for the cut-back and also the staining
technique.

3

®

e.max

IPS

CAD

Product Information

Material

IPS e.max CAD is a lithium disilicate glass-ceramic block for the
CAD/CAM technique. It is fabricated using an innovative process
which provides an impressive homogeneity of the material. The
block can be processed very easily in a CAD/CAM unit in this
crystalline intermediate stage. The typical and striking colour of
IPS e.max CAD ranges from whitish to blue and bluish-grey. This
shade is a result of the composition and the microstructure of the
glass-ceramic. The strength of the material in this processable inter­mediate phase is 130-150 MPa. After the IPS e.max CAD blocks are
milled, the restoration is crystallized in an Ivoclar Vivadent ceramic
furnace (e.g. Programat®P300, P500, P700). Unlike with some
other CAD/CAM ceramics, the approximately 20-31-minute, easy­to-conduct crystallization process neither causes any major
shrinkage, nor are any complicated infiltration processes required.
The crystallization process at 840-850°C (1544-1562°F) results in a
transformation of the microstructure, during which lithium disilicate
crystals grow in a controlled manner. The densification of 0.2% is
accounted for in the CAD software and taken into account upon
milling.
The final physical properties, such as the strength of 360 MPa and
the corresponding optical properties, are achieved through the
transformation of the microstructure.

CTE (100-400°C) [10-6/K] 10.2

CTE (100-500°C) [10-6/K] 10.5

Flexural strength (biaxial) [MPa]* 360

Fracture toughness [MPa m

Modulus of elasticity [GPa] 95

Vickers hardness [MPa] 5800

Chem. solubility [µg/cm2]* 40

Crystallization temperature [°C/°F] 840–850/1544-1562

*according to ISO 6872

4

0.5

] 2.25

Usage

Composition

Indications

– Veneers
– Inlays
– Onlays
– Partial crowns
– Crowns in the anterior and posterior region
– Implant superstructures for single-tooth restorations (anterior and

posterior region)

– Primary telescope crowns

Contraindications

– Full veneers on molar crowns
– Very deep sub gingival preparations
– Patients with substantially reduced residual dentition
– Bruxism
– Any other use not listed in the indications

Important processing restrictions

Failure to observe the following restrictions may compromise the
results achieved with IPS e.max CAD:
– The frameworks must not fall below the required minimum

thickness.
– Do not mill the blocks with non-compatible CAD/CAM systems.
– Crystallization must not be conducted in a ceramic furnace that

has not been approved and/or recommended.
– Crystallization must not be conducted in a ceramic furnace that

has no vacuum function.
– Crystallization must not be conducted in a ceramic furnace that

has not been calibrated.
– Crystallization must not be conducted in a high-temperature

furnace (e.g. Sintramat).
– Do not mix IPS e.max CAD Crystall./Glaze, Shades and Stains with

other dental ceramics (e.g. IPS e.max Ceram Glaze, Stains and

Essence).
– Do not layer with a veneering ceramic other than IPS e.max

Ceram.

– IPS e.max CAD Blocks

Components: SiO
Additional contents: Li2O, K2O, MgO, Al2O3, P2O5and other
oxides.

– IPS e.max CAD Crystall./Glaze, Shades and Stains

Components: oxides, glycols

– IPS e.max CAD Crystall./Glaze Spray

Components: oxides, propanol, propellant: isobutane

– IPS e.max CAD Crystall./Glaze Liquid

Components: butandiol

– IPS e.max CAD Crystall./Add-On

Components: oxides

– IPS e.max CAD Crystall./Add-On Liquid

components: water, propylene glycol, butandiol and chloride

– IPS Object Fix Putty / Flow

Components: oxides, water, thickening agent

– IPS Contrast Spray Labside

Components: pigment suspension in ethanol;
propellant: propane/butane mixture

– IPS Natural Die Material

Components: polymethacrylate, paraffin oil, SiO2and copolymer

– IPS Natural Die Material Separator

Components: wax dissolved in hexane

– IPS Ceramic Etching Gel

Components: hydrofluoric acid (approx. 5%)

2

Side effects

If the patient is known to be allergic to any of the components
of IPS e.max CAD, the material must not be used to fabricate
restorations.

Warning

– Hexane is highly flammable and detrimental to health. Avoid con-

tact of the material with skin and eyes. Do not inhale vapours and
keep away from sources of ignition.

– Do not inhale ceramic dust during finishing – use exhaust air

discharge and mouth protection.

– IPS Ceramic Etching Gel contains hydrofluoric acid. Contact with

skin, eyes and clothing must be prevented at all costs, since the
material is extremely toxic and corrosive. The etching gel is
intended for professional use only and must not be applied intra­orally (inside the mouth).

– IPS Contrast Spray Labside must not be used intra-orally.

5

Scientific Data

Further scientific data (e.g. strength, wear, biocompatibility) are contained in the “Scientific
Documentation IPS e.max CAD”. The Documentation also provides a set of studies that describe the
clinical performance of IPS e.max CAD.
This Scientific Documentation can be obtained from Ivoclar Vivadent.

For further information about all-ceramics and IPS e.max in general, please refer to the Ivoclar Vivadent
Reports No. 16 and No. 17.

Scien

n

tatio

en

m

cu

c Do

tifi

6

Block Concept

IPS e.max CAD is available in three levels of translucency (HT, LT, MO) and two sizes (I12, C14).
From a processing point of view, basically all restorations can be fabricated from any block.
For reasons of esthetics, however, the following processing techniques and indications are recommended
for the individual blocks (translucency levels):

Translucency Level

High
Translucency

Low
Translucency

Medium
Opacity

CR %

Processing Technique

Staining
echnique

T

Cut-Back

echnique

T

Layering
echnique

T

Inlays Onlays Veneers Partial

Indications

rowns

C

Anterior

C





IPS e.max CAD HT (High Translucency)

The HT Blocks are available in 16 A-D and 4 Bleach BL shades and 2 sizes (I 12, C 14). Given their
translucency, they are ideally suitable for the fabrication of small restorations (e.g. inlays, onlays) by
means of the staining technique, but they can also be used for the cut-back technique. Restorations
made of HT blocks exhibit a true-to-nature chameleon effect and exceptional adaption to the remaining
tooth structure. The stain and characterization firing, as well as glaze firing may be conducted with
either IPS e.max CAD Crystall./Shades and Stains, Glaze, or IPS e.max Ceram Shades, Essences and
Glaze.

rowns

Posterior

rowns

C





* up to the second premolar

*

IPS e.max CAD LT (Low Translucency)

The LT Blocks are available in 16 A-D and 4 Bleach BL shades and 2 sizes (I 12, C 14). Given their
translucency, they are suitable for the cut-back and also the staining technique. Restorations made of LT
blocks exhibit lifelike brightness value and chroma. This prevents the incorporated restorations from
graying. The cut-back is supplemented with IPS e.max Ceram Incisal and/or Impulse and characterized
using IPS e.max Ceram Essence and Shade.

IPS e.max CAD MO (Medium Opacity)

The MO Blocks are available in 5 group shades (MO 0 - MO 4) in one size (C 14). Given their opacity,
they are ideally suitable for the fabrication of frameworks on vital or slightly discoloured preparations.
The anatomical shape is individually layered using ISP e.max Ceram. Finally, the Stain/Glaze
firing with IPS e.max Ceram is conducted.

The entire IPS e.max delivery program can be found at www.ivoclarvivadent.com!

7

CAD/CAM Partners

IPS e.max CAD can be processed with a system of the CAD/CAM partners. For questions regarding

the different systems, please contact the respective cooperation partners.

Information is available from:

Sirona Dental Systems GmbH

Fabrikstrasse 31
64625 Bensheim
Germany
E-mail: [e-mail]
www.sirona.com

inLab®is a registered trademark of Sirona Dental

ystems GmbH

S

Information is available from:

Institut Straumann AG

Peter Merian-Weg 12
4052 Basel
Switzerland
E-mail:[e-mail]
www.straumann.com

Information is available from:

KaVo Dental GmbH

Bismarckring 39
88400 Biberach
Germany
E-mail:[e-mail]
www.kavo-everest.com

®

verest

s a registered trademark of

E

i

KaVo Dental GmbH

8

®

e.max

IPS

CAD

Clinical Working Steps, Fabrication Process

Working Step

Practice

Preparation, Shade Determination

Impression Taking

Model Fabrication

CAD/CAM Process

Finishing, Check on Model

Laboratory

Ivoclar Vivadent Products

OptraGate,

IPS Natural Die Material

Overview of the Clinical Working Steps, Fabrication Process

IPS Contrast Spray Labside

IPS e.max CAD

Staining

Technique

Preparation for Cementation

Check of Articulation/Occlusion

Cut-Back

Technique

Cementation

Layering

Technique

IPS e.max CAD Crystall./Shades, Stains

IPS e.max CAD Crystall./Glaze

IPS CAD Crystallization Tray and Pins

IPS e.max Ceram Layering Materials

IPS e.max Ceram Shades, Essences, Glaze

IPS Ceramic Etching Gel

Monobond Plus

OptraGate
OptraDam

Variolink II, Variolink Veneer

Multilink Automix

SpeedCEM

Vivaglass CEM

bluephase

OptraFine

Recall

Proxyt

The range of products on offer may vary from country to country

9

Shade Determination — Tooth Shade, Shade of the Prepared
Tooth

Optimum integration in the oral cavity of the patient is the prerequisite for a true-to-nature all-ceramic
restoration. To achieve this, the following guidelines and notes must be observed by both the dentist
and the laboratory.
The overall esthetic result of an all-ceramic restoration is influenced by the following factors:

• Shade of the preparation (natural preparation, core build-up, abutment, implant)

• Shade of the restoration (framework shade, veneer, characterization)

• Shade of the cementation material

The optical effect of the preparation shade must not be underestimated during the fabrication of highly
esthetic restorations. For that reason, the shade of the preparation should be determined together with
the desired tooth shade in order to select the suitable block. Especially with severely discoloured prepara­tions or non-tooth-shaded build-ups, this is of utmost importance. Only if the dentist determines the
shade of the preparation and its subsequent transmission to the laboratory may the desired esthetic
result be achieved.

Preparation Shade

– Prepared natural tooth

– Core build-up
– Implant, abutment

Desired Tooth Shade

Cementation Material

Responsibility of the Dental Office Responsibility of the Laboratory

Restoration Shade

Framework

–

– Veneer
– Characterization

10

Shade determination of the natural tooth

After tooth cleaning, the tooth shade of the non-prepared tooth and/or the adjacent teeth is determined
with the help of a shade guide. Individual characteristics have to be considered when determining the
tooth shade. If a crown preparation is planned, for example, the cervical shade should also be deter­mined. In order to achieve the best possible true-to-nature results, shade determination should be
carried out in daylight. Furthermore, the patient should not wear clothes of intense colours and/or
lipstick.

Die shade selection

In order to facilitate the reproduction of the desired tooth shade, the shade of the preparation is
determined with the help of the IPS Natural Die Material shade guide. This enables the technician to
fabricate a model die similar to the preparation of the patient, on the basis of which
the correct shade and brightness values of the all-ceramic restorations may be
selected.

Example of the preparation shade effect

Crown made of IPS e.max CAD HT B1 on different preparation shades.

Overview of the Clinical Working Steps, Fabrication Process

Which block should be used?

The suitable block is selected on the basis of the following criteria:

1. Desired tooth shade

2. Preparation shade or abutment shade

3. Type of restoration

4. Restoration thickness and/or preparation depth

5. Processing technique (staining, cut-back or layering technique)

6. Cementation material

Please refer to the table on page 62 for block selection

11

Preparation guidelines

1.0

1.5

0.6

0.6

0.7

1.0

1.0

1.5

1.2 1.2

1.0

Successful results can only be achieved with IPS e.max CAD if the guidelines and framework thicknesses are strictly
observed.

Basic preparation guidelines for all-ceramic restorations

– no angles or sharp edges
– shoulder preparation with rounded inner edges and/or chamfer preparation
– the indicated dimensions reflect the minimum thickness for IPS e.max CAD restorations
– the incisal edge of the preparation, particularly for anterior teeth, should be at least 1.0 mm (milling tool geometry) in

order to permit optimum milling during CAD/CAM processing.

Veneer Anterior crown

– If possible, the preparation should be located in the

enamel.

– The incisal preparation margins should not be located

in the area of static or dynamic enamel contact.

– Reduction in the cervical and/or labial area by 0.6 mm,

and the incisal edge by 0.7 mm.

– Reduce the anatomical shape and observe the

stipulated minimum thickness. Prepare a shoulder with
rounded inner edges or a deep chamfer. Width of the

shoulder/chamfer at least 1.0 mm.
– Reduce the edge by approx. 1.5 mm.
– Reduce the labial and lingual area by approx. 1.2 mm.
– For conventional and/or self-adhesive cementation,

the preparation must demonstrate retentive surfaces

12

1.5

1.0

1.5

1.5

1.5

1.5

1.5

1.0

1.0

1.5

1.5

1.5

6°

1.0

1.0

6°

1

00-120°

6°

1.0

1.0

Inlay Onlay

– Static and dynamic antagonist contacts must be taken

into consideration.

– The preparation margins must not be located on

centric antagonist contacts.

– A preparation depth of at least 1.0 mm and an

isthmus width of at least 1.0 mm must be observed 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, marginal ridge contacts should be avoided.

– Round out internal edges in order to prevent stress

concentration within the ceramic material.

– Do not prepare slice-cuts or feather edges.

Partial crown Posterior crown

– Static and dynamic antagonist contacts must be taken

into consideration.

– The preparation margins must not be located on

centric antagonist contacts.

– A preparation depth of at least 1.0 mm and an

isthmus width of at least 1.0 mm must be observed
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
onlay surfaces. For onlays with pronounced convex
cavity walls without adequate support by the proximal
shoulder, marginal ridge contacts should be avoided.

– Round out internal edges in order to prevent stress

concentration within the ceramic material.
– Do not prepare slice-cuts or feather edges.
– Provide at least 1.0 mm of reduction in the cusp areas.

Overview of the Clinical Working Steps, Fabrication Process

– Static and dynamic antagonist contacts must be taken

into consideration.

– The preparation margins must not be located on

centric antagonist contacts.

– Provide at least 1.5 mm of reduction in the cusp

areas.

– Prepare a circular shoulder with rounded inner edges

or a deep chamfer. Width of the shoulder/chamfer
should be at least 1.0 mm.

– Reduce the anatomical shape and observe the

stipulated minimum thickness. Prepare a circular

shoulder with rounded inner edges or a deep

chamfer. Width of the shoulder/chamfer at least

1.0 mm.
– Reduce the incisal crown third by approx. 1.5 mm.
– Reduce the buccal or lingual area by approx. 1.5 mm.
– For conventional and/or self-adhesive cementation,

the preparation must demonstrate retentive surfaces

13

Model and Tooth Preparation

Fabricate a working model with removable segments as usual. The directions of the manufacturers of the
different CAD/CAM systems regarding the plaster to be used must be observed.

Important for die preparation:

– Check the radius of the incisal/occlusal edge on the prepared die (maxilla and mandible).
– The prepared incisal edge should be at least as thick as the diameter of the bur used in the cavity

during the CAD/CAM process.

– If the incisal edge of the prepared die is thinner than the diameter of the bur, the incisal edge has to

be blocked out accordingly.

– Also observe the information provided by the manufacturer of the CAD/CAM system regarding the die

geometry.

Inlay/onlay Veneer and anterior crown

Posterior crown

Anterior crown on a ZrO2abutment

(Straumann®Anatomic IPS e.max®Abutment)

14

Layer thicknesses

The restoration design is key to the success of durable all-ceramic restorations. The more attention is given to the design,
the better the final results and the clinical success will turn out to be. The following basic guidelines have to be observed:

– IPS e.max CAD is the high-strength component of your restoration and must, therefore, always make up at

least 50% of the total layer thickness of the restoration.

– In large preparations and for veneered or partially veneered restorations, the excess available space must be

compensated by the corresponding dimensions of the high-strength IPS e.max CAD component and not by
the IPS e.max Ceram layering material.

– The design of the restoration generated by the software has to be individually adjusted, if necessary, in accordance with

the clinical situation using the design tools.

– The areas that support and reinforce the shape and cusps of the restoration are constructed with the integrated design

tools of the different types of software used.

– In partially veneered restorations, the transition between the layering material and IPS e.max CAD must not be located

in the area of the functional contact points.

The following minimum thicknesses have to be observed to match the tooth shade of the shade guide and to
fulfil the requirements given from the preparation guidelines:

Overview of the Clinical Working Steps, Fabrication Process

Veneer Inlay Onlay Partial

crown

Anterior Premolar Molar

Minimum thickness
IPS e.max CAD

Staining technique

Minimum thickness
IPS e.max CAD

circular

incisal/occlusal

circular

0.6

0.7

0.6

1.0

isthmus width

1.0

isthmus width

–

1.0

1.0

1.5

1.5

–

1.5

1.2

1.5

1.2

Cut-back technique
(after reduction)

labial/occlusal

circular

0.4

–

–

–

–

–

1.3

0.4

–

0.8

Minimum thickness
IPS e.max CAD

incisal/occlusal

–

–

–

–

0.8

Layering technique

design type

–

–

–

–

supporting the tooth shape

For the cut-back and layering techniques the relationship of the layer thickness between IPS e.max CAD (framework)
and IPS e.max Ceram (veneer) must also be observed:

Crowns

1.5

1.5

1.5

1.0

0.8

1.0

1.5

1.5

1.5

1.3

–

–

–

dimensions in mm

Total layer thickness of the
restoration in mm

Minimum layer thickness of the
framework ceramic mm

Maximum layer thickness of the
veneer with IPS e.max Ceram in mm

0.8

0.4

0.4

1.0

0.5

0.5

1.2

0.6

0.6

1.5

0.8

0.7

1.8

1.0

0.8

2.0

1.1

0.9

2.5

1.3

1.2

3.0

1.6

1.4

Failure to observe the stipulated framework design criteria and minimum thicknesses may result in clinical failures, such as
cracks, delamination, and fracture of the restoration.

15

Design guidelines for the restoration

IPS e.max CAD Veneering with IPS e.max Ceram

Staining Technique

– fully anatomical design

nterior tooth Premolar

A

Cut-back Technique

– partially reduced, cusp-supporting design

Anterior tooth Premolar

Layering Technique

– cusp-supporting design

olar

M

Molar

Anterior tooth Premolar

16

CAD/CAM processing

As densification of about 0.2% takes place in IPS e.max CAD during the crystallization process. This factor has been taken
into account in the software. Consequently, the milled IPS e.max CAD restorations demonstrate precision of fit after
crystallization. The fabrication steps are described in the directions for use and user manuals of the different CAD/CAM
systems. The instructions of the manufacturers must be followed:

Information is available from:

Sirona Dental Systems GmbH

Fabrikstrasse 31
64625 Bensheim
Germany
E-mail: [e-mail]
www.sirona.com

inLab®is a registered trademark of Sirona Dental

ystems GmbH

S

Information is available from:

Institut Straumann AG

Peter Merian-Weg 12
4052 Basel
Switzerland
E-mail:[e-mail]
www.straumann.com

Information is available from:

KaVo Dental GmbH

Bismarckring 39
88400 Biberach
Germany
E-mail:[e-mail]
www.kavo-everest.com

®

verest

s a registered trademark of

E

i

KaVo Dental GmbH

Overview of the Clinical Working Steps, Fabrication Process

17

®

e.max

IPS

CAD –

Staining technique

In the staining technique, the milled full-contour restorations are completed by applying stains and glaze materials.
Individualized characterizations and glaze can be applied either before or after Crystallization firing. Coordinated materials
are available for the different procedures.
In this way, the use of translucent IPS e.max CAD blocks permit the fabrication of very esthetic restorations on only
slightly or non-discoloured preparations with minimum effort.

Finishing

It is of critical importance to use the correct grinding instruments for finishing and adjusting IPS e.max CAD. If unsuitable
grinding instruments are used, chipping of the edges and local overheating may occur (please observe the Ivoclar Vivadent
Flow Chart ”Recommended grinding tools for PS e.max glass-ceramics”.

Observe the following procedure for finishing IPS e.max CAD restorations:
– Carry out adjustments by grinding of IPS e.max CAD restorations while they are still in their pre-crystallized (blue) state,

if possible.

– Only use suitable grinding instruments, low rpms and light pressure to prevent delamination and chipping at the edges

in particular.
– Overheating of the glass-ceramic must be avoided.
– The restorations are tried in on the dies and carefully finished.
– Check proximal and occlusal contact points.
– Surface-grind the entire occlusal surface with a fine diamond to smooth out the surface structure created by the

CAD/CAM procedure.
– Make sure that the minimum thicknesses are maintained even after the minor adjustments.
– Design surface textures.
– Always clean the restoration with ultrasound in a water bath or blast with the steam jet before crystallization.
– Make sure to thoroughly clean the restoration before further processing and to remove any residue of the milling

additive of the CAD/CAM milling unit. Residue of the milling additive remaining on the surface may result in bonding

problems and discolouration.
– Do not blast the restorations with Al2O3or glass polishing beads.

Finish margins with suitable polishers

Finish the restoration surface with suitable grinding instruments

Surface-grind the outer surface, particularly functional areas of the restoration with a fine

diamond to smooth out the surface structure created by the CAD/CAM process

18

IPS e.max CAD LT crown on the model IPS e.max CAD HT inlay/onlay on the model.

Crystallization and Stain/Glaze Firing

Basically, fully anatomically milled restorations made of IPS e.max CAD can be completed in three different ways.

Staining Technique

Option A:

Crystallization and Glaze firing with
IPS e.max CAD Crystall./Glaze paste

Characterization of the non-crystallized,

blue restoration permits quick comple-

tion of the restoration with the

subsequent combination firing

(Crystallization/Glaze HT/LT).

Option B:

Crystallization and Stain/Glaze firing

with IPS e.max CAD Crystall./Glaze spray

Characterization of the non-crystallized,

blue restoration permits quick comple-

tion of the restoration with the

subsequent combination firing

(Crystallization/Glaze HT/LT).

Option C:

Crystallization and separate Stain/Glaze

firing with IPS e.max Ceram Shades,

Essences and Glaze

Characterization of the tooth-coloured

restoration after crystallization.

19

Option A:

Crystallization and Glaze firing in one step with IPS e.max CAD Crystall./Glaze paste

In this processing technique, crystallization and Glaze firing are performed in one step.
Characterizations are applied using IPS e.max CAD Crystall./Shades and Stains.

Preparation for Crystallization and Glaze firing

Depending on the type of restoration, they have to be placed on an IPS e.max CAD Crystallization Pin
before the Stains and Glaze are applied. Smaller restorations (veneers, inlays, onlays) do not need to
be entirely supported.
Either IPS Object Fix Putty or Flow are recommended to secure the restoration on the pin. The
Putty demonstrates a denser consistency and thus higher stability. Given its lower viscosity, Flow is
suitable for smaller restorations.

with

IPS e.max CAD Crystallization Pin

Partial Crown, Anterior Crown,

Posterior Crown

Use either IPS Object Fix Putty or Flow to
secure the restoration on the pin.

without

IPS e.max CAD Crystallization Pin

Veneer,

Inlay, Onlay

To apply Glaze, Shades and Stains, secure the
restoration
– with an OptraStick,
– with diamond tweezers, or
– directly on the die
Note: the restoration must be placed on a
Crystallization pin with IPS Object Fix Putty or
Flow before firing.

Observe the following procedure for partial crowns and crowns:
– Select the largest possible IPS e.max CAD Crystallization Pin (S, M, L) that best “fills” the inside of the

restoration, but does not come into contact with the circular crown walls.

– Fill the inside of the restoration with IPS Object Fix Putty or Flow up to the restoration margin.

Immediately reseal the IPS Object Fix Putty/Flow syringe after extruding the material. Once
removed from the aluminium bag, the syringe is ideally stored in a resealable plastic bag or a
container with a humid atmosphere.

– Press the selected IPS e.max CAD Crystallization Pin deeply into the IPS Object Fix Putty or Flow

material so that it is adequately secured.

– Smooth out displaced auxiliary firing paste using a plastic spatula so that the pin is securely in place

and the restoration margins are optimally supported.

– Prevent contamination of the outer restoration surface. Clean off contamination with a brush

dampened with water and dry.

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Staining Technique

Select the largest possible IPS e.max CAD Crystallization PinIPS Object Fix Flow and IPS Object Fix Putty

ill the inside of the crown with IPS Object Fix Putty or Flow.

F

Smooth out displaced IPS Object Fix Putty or Flow with a plastic spatula from the margin
towards the spport pin so that the pin is secured in the paste and the crown wall is exactly
supported

Press the selected IPS e.max CAD Crystallization Pin deeply into the IPS Object Fix Putty or

Clean off any possible residue adhering to the outer surface of the crown with a brush

dampened with water and dry

low material

F

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