 |
 |
 |
 |
         |
|||
Is
IPS e.max Ceram also suitable to veneer frameworks made of other glass-ceramic
materials?
Is IPS e.max Ceram also suitable to veneer
frameworks made of other zirconium oxide materials?
Is IPS e.max Ceram also suitable to individualize
and veneer implant abutments?
Is IPS e.max Ceram also suitable for
the fabrication of veneers?
What is the purpose of the IPS e.max Ceram
ZirLiner?
Which type of IPS e.max Ceram ZirLiner should
be used on shaded zirconium oxide frameworks?
Can zirconium oxide frameworks also be veneered
without IPS e.max Ceram ZirLiner, or with a wash firing
of dentin material,
respectively?
Why is the IPS e.max Ceram ZirLiner powder green
and how should it be applied?
How are the IPS e.max Ceram Add-On materials
correctly used?
How should complete layered IPS e.max
Ceram restorations be prepared for firing?
How can the shrinkage be compensated for deep
occlusal preparations or very concave areas?
How can the shrinkage of the ceramic be reduced,
especially in large bridges and implant superstructures?
Is IPS e.max Ceram also suitable to veneer frameworks made of other glass-ceramic materials?
IPS e.max Ceram is not suitable to veneer and characterize
glass-ceramic frameworks made of materials other than IPS e.max Press,
IPS e.max ZirPress, and IPS e.max CAD. On the one hand, the CTE of other
glass-ceramic materials is not compatible and, on the other hand,
the shade coordination between framework and veneering ceramics is not
ensured. (
top of page)
Is IPS e.max Ceram also suitable to veneer frameworks made of other zirconium oxide materials?
IPS e.max Ceram can be used to veneer frameworks made
of sintered zirconium oxide, HIP zirconium oxide, as well as pre-sintered
zirconium oxide with a CTE range of 10.5-11.0 x 10-6 K-1 (100–500 °C).
The following zirconium oxide materials have been tested:
– KaVo – Bio ZS (coloured and uncoloured) and Bio ZH Blanks
– Nobel Biocare – Procera Zirconia
– DeguDent – Cercon Base
– 3M/Espe – Lava Frame (coloured and uncoloured)
– DCS – DC-Zirkon
– Digident – Digizon
– Cad.esthetics – Denzir
– Vita – In-Ceram 2000 YZ Cubes (coloured and uncoloured)
– Diatomic – Diadem/Diazir (coloured and uncoloured)
– Xawex – G100 (
top of page)
Is IPS e.max Ceram also suitable to individualize and veneer implant abutments?
IPS e.max Ceram is suitable to individualize and veneer
abutments made of zirconium oxide with a CTE of range of 10.5-11.0 x
10-6 K-1 (100–500 °C).
However, the abutments must be designed to the appropriate size and to
the adequate shape and cusp support. The instructions of the corresponding
manufacturer have to be observed. (
top of page)
Is IPS e.max Ceram also suitable for the fabrication of veneers?
IPS e.max Ceram is suitable to fabricate veneers on
foil or refractory investment material dies. The material meets the required
strength values
(ISO standard: at least 50 MPa). The physical properties, such as the CTE, must be taken
into consideration when selecting the corresponding
investment material. (
top of page)
What is the purpose of the IPS e.max Ceram ZirLiner?
IPS e.max Ceram ZirLiners are translucent. Their three
major purposes are as follows:
1. They enable a strong, homogeneous bond with the zirconium oxide framework.
2. They provide the white, non-coloured zirconium oxide frameworks with
chroma, an in-depth effect, and a shaded character without
increasing
their opacity.
3. They also provide the non-fluorescent zirconium oxide framework with
a natural fluorescence, thus enabling the fabrication of
lifelike restorations. (
top of page)
Which type of IPS e.max Ceram ZirLiner should be used on shaded zirconium oxide frameworks?
The clear IPS e.max Ceram ZirLiner should be used on
shaded zirconium oxide frameworks. The transparent character of the IPS
e.max Ceram ZirLiner
does not affect the framework shade. An outstanding bond as well as natural-looking
fluorescence is achieved. When shaded frameworks are used,
the colour compatibility of the IPS e.max ZirPress ingots and that of
the framework must be ensured. (
top of page)
Can zirconium
oxide frameworks also be veneered without IPS e.max Ceram ZirLiner,
or with a wash firing
of dentin material, respectively?
An IPS e.max Ceram ZirLiner in the corresponding shade
must always be applied prior to veneering. A wash firing, e.g. with dentin,
as it is done
for glass-ceramics, is not sufficient. (
top of page)
Why is the IPS e.max Ceram ZirLiner powder green and how should it be applied?
Since zirconium oxide is white and, therefore, shows
a poor contrast to tooth-coloured and/or white powders, the IPS e.max
ZirLiner was given
an identification colour to render its application more simple and efficient.
The IPS e.max Ceram ZirLiner consists of a very fine powder and appears
somewhat thick due to the dense packing of the grains. Make sure that
the material is applied in an even, greenish coat. If the shade is too
pale,
the layer is too thin. After firing, however, the ZirLiner demonstrates
a layer thickness of approximately 0.1 mm. (
top of page)
How are the IPS e.max Ceram Add-On materials correctly used?
There are 3 Add-On materials available for final adjustments.
Add-on Margin with a firing temperature of 725 °C (1337 °F) is
used for shoulder
adjustments with the dentin / incisal firings, as well as with the final
glaze firing. Depending on the application, the Add-On Margin material
is mixed 1:1
with the corresponding shaded Margin material (adjustment with the dentin/incisal
firing) or used alone (adjustment with the glaze firing). Add-On Dentin
and Add-On Incisal with a firing temperature of 700 °C (1292 °F)
are used to supplement missing areas (e.g. contact points) with the final
glaze firing
or a separate add-on firing after glaze firing. Depending on the application
Add-On Dentin and Add-On Incisal are mixed 1:1 with the corresponding
shades Dentin and Incisal material (adjustments with the glaze firing)
or used alone (adjustments after glaze firing) (see also page 42). (
top of page)
How should complete layered IPS e.max Ceram restorations be prepared for firing?
Separate the completely layered IPS e.max Ceram restorations
in the interdental area down to the framework and only blot them dry
with a cloth.
Excessive vibration of the restorations with a serrated instrument and
then blotting, or excessive drying with blown air should not be done. (
top of page)
How can the shrinkage be compensated for deep occlusal preparations or very concave areas?
With deep occlusal surfaces and/or steep cusp inclinations
and particularly with massive zirconium oxide pontics and abutments,
it is favourable to separate the central fissure with a scalpel down
to the framework before the first firing (with the ZirLiner layer already
fired).
In this way, the ceramic may sinter to the framework surface
in a controlled fashion. During the subsequent 2nd dentin and incisal
firing,
the central fissure and occlusal surface are easily corrected. (
top of page)
How can the shrinkage of the ceramic be reduced, especially in large bridges and implant superstructures?
If enough space is available, a special Deep Dentin
or intermediate dentin firing is recommended, to distribute the overall
shrinkage to two firing
procedures. In this way, the position of the Impulse materials after
the second firing can be ensured. (
top of page)
 |
 |
 |
 |
 |
 |