Getemax.com - FAQ's - e.max ZirPress

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Can IPS e.max ZirPress also be pressed onto other zirconium oxide frameworks?

IPS e.max ZirPress can be pressed onto frameworks made of sintered zirconium oxide or HIP zirconium oxide as well as presintered
zirconium oxide in the CTE range of 10.5–11.0 x 10-6 K-1
(100–500 ºC). The following zirconium oxides have been tested for this purpose:
– 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
– Diatomic – Diadem/Diazir
– Xawex – G100 ( top of page)

Can IPS e.max ZirPress be pressed onto implant abutments?

IPS e.max ZirPress can be pressed onto zirconium oxide abutments in the CTE range of 10.5–11.0 x 10-6 K-1 (100–500 ºC).
The abutments should not be too small and they must provide adequate support for the shape and cusps. The instructions of the
individual manufacturers should be observed. ( top of page)

Can IPS e.max ZirPress be used to fabricate single crowns without zirconium oxide copings?

IPS e.max ZirPress has been developed for the press-on technique. The strength of the ingots is not sufficient for crowns
without zirconium oxide copings. Therefore, the ingots can not be used for this indication. ( top of page)

Can IPS e.max ZirPress be used to fabricate inlays and onlays?

IPS e.max ZirPress has been developed for pressing onto zirconium oxide. Therefore, the shades have been specially developed for this application.
From a materials science point of view, inlays and onlays can be fabricated using this material. However, the aesthetic potential of the product
is limited because of the opacity of the ingots. This must be taken into consideration during fabrication. ( top of page)

Can IPS e.max ZirPress be pressed onto only a part of a restoration (eg. on a shoulder or pontic)?

IPS e.max ZirPress can be pressed onto selected parts of a restoration, if the instructions for use, the necessary minimum thickness of the ceramics
and the following points are observed. The sprues must be attached directly, for example, to the ceramic shoulder. During sprueing and placement
on the IPS e.max ring base, adequate stability of the restoration and the waxed up areas must be ensured. The fired ZirLiner areas which remain free
from the pressed material must not come in contact with the investment material, to prevent the formation of bubbles during the subsequent firing
procedures. Therefore, the fired ZirLiner must be coated with a thin layer of wax. This layer prevents the liner from coming in contact with the investment
material and also makes divestment easier, as the investment material peels off without blasting. The removal of the reaction layer with Invex Liquid
does not have a negative influence on ZirLiner. The ZirLiner surface must be protected in the final blasting process in which the reaction layer is
completely removed with Al2O3. Wash (foundation) firing has to be carried out, even if ceramics are only pressed onto certain areas of the restoration
to improve wetting. ( top of page)

Can veneers be fabricated with IPS e.max ZirPress?

IPS e.max ZirPress has been developed for pressing onto zirconium oxide and the shades of the material have been adjusted for this purpose.
However, from a technical point of view, veneers can be fabricated with this material. For example, if veneers are required in the anterior region
for a large restorative case and if the shade of the IPS e.max ZirPress ingot corresponds to the demands of the patient, veneers can be pressed
(in the same investment ring). The cut-back technique allows the veneers to be individually characterized with IPS e.max Ceram. Veneers made with
IPS e.max ZirPress must be placed with the adhesive technique. ( top of page)

Can IPS e.max ZirPress be pressed onto inlay-retained bridges?

IPS e.max ZirPress LT ingots can be pressed onto zirconium oxide inlay-retained bridges. In the creation of the zirconium oxide framework,
the minimum thickness of the connectors and the inlays (min 0.5 mm) must be observed. All the areas at the preparation margins should be fabricated
with IPS e.max ZirPress rather than zirconium oxide, since the press ceramic can be etched. This allows a sound bond to be established between
the press ceramic, the luting composite and the prepared tooth. ( top of page)

Can IPS e.max ZirPress be pressed onto IPS Empress CosmoPost?

IPS e.max ZirPress ingots can be pressed onto IPS Empress CosmoPost. An excellent bond is achieved. Because of the large
selection of IPS e.max ZirPress ingots, very natural-looking restorations are achieved. ( top of page)

Can IPS e.max ZirPress be pressed onto glass-ceramic frameworks made of IPS e.max Press or IPS e.max CAD, for example?

IPS e.max ZirPress ingots can only be pressed onto zirconium oxide materials. The press temperature of 910–915 ºC (1670–1679 °F) is too high for
glass-ceramic frameworks. Consequently, they would become deformed during the press procedure. ( 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 appearance without increasing their opacity.
3. They also provide the non-fluorescent zirconium oxide framework with a natural fluorescence, thus enabling life-like 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 clear shade 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 IPS e.max ZirPress be pressed onto zirconium oxide frameworks without the application of IPS e.max Ceram ZirLiner?

A suitably shaded IPS e.max Ceram ZirLiner must always be applied before waxing up. The IPS e.max Ceram ZirLiner generates an
outstanding bond and gives the restoration an effect of depth with regard to the colour and fluorescence. ( 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 thick should the wax-up be?

The wax-up should be at least 0.7 mm thick all over. If the wax is not at least this thick, the restoration may not be completely
covered with the pressed ceramic and deviations in the shade may occur. ( top of page)

Can IPS Empress Universal Shades, Stains and Glaze be used with IPS e.max ZirPress?

IPS Empress Universal Shades, Stains and Glaze have been specially developed for the IPS Empress system.
Consequently, they cannot be used with IPS e.max products. ( top of page)

Can IPS e.max Alox plungers also be used for IPS Empress?

IPS e.max Alox plungers are exclusively for the IPS e.max System and the corresponding investment ring system specifically developed for this purpose.
Since the diameter has been increased, the Alox plunger would not fit into the IPS Empress investment ring system. ( top of page)

Can the IPS e.max Alox Plunger Separator also be used for other pressed ceramics, such as IPS Empress Esthetic?

The IPS e.max Alox Plunger Separator can only be used for IPS e.max Press and IPS e.max ZirPress ingots, since the press temperature
of the IPS Empress Esthetic ingots of 1075 °C (1967 °F) is too high and results in the Separator losing its effect. ( top of page)

Can other press furnaces be used to press IPS e.max ZirPress ingots?

IPS e.max ZirPress is specifically coordinated with the Ivoclar Vivadent press furnaces (EP 500, EP 600, and EP 600 Combi).
If other press furnaces are used, the parameters have to be adjusted accordingly by the user. ( top of page)

Can IPS e.max ZirPress restorations also be conventionally cemented?

IPS e.max ZirPress restorations may be either adhesively or conventionally cemented. For conventional cementation, however, an appropriately retentive
preparation design must be observed. If this is not possible, adhesive cementation, e.g. with Multilink® should be used. Vivaglass® CEM is available
for conventional cementation. We advise against the use of traditional phosphate cements, since they negatively influence the light transmission through
the all-ceramic and compromise the aesthetic appearance of the all-ceramic restorations. ( top of page)