Ivoclar-vivadent IPS e.max Ceram User Manual download pdf (Page 63)

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 correspondingly 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 Dentin and Incisal material in the

corresponding shade (supplements with the glaze ﬁring) or used

alone (supplements after glaze ﬁring) (see also page 33).

How should completely 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 by drawing

another instrument over the grooves of the forceps grip and using

suction equipment or excessive drying with blown air should not be

done.

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 2

Dentin and

Incisal ﬁring, the central ﬁssure and occlusal surface are then

closed.

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, especially the position of the

Impulse materials after the second ﬁring can be ensured.

What liquid should be used to rewet IPS e.max Ceram

layering materials?

If a layering material has to be rewetted on the mixing pad, distilled

water has to be used for that purpose. No Build-Up Liquids must be

used, since this would result in an accumulation of organic

components, which may lead to gray discolouration of the

veneer as they fail to ﬁre without leaving residue.

How can the wetting properties of the restoration be

improved before the Stain and Glaze ﬁring?

The wetting properties of the surface can either be improved by

slight blasting with Al

(Type 100 µm/ max. 1 bar/15 psi) or by

rubbing with moist ceramic powder or pumice. Good wetting

properties are important for a homogeneous application of the

Shades, Essence and Glaze materials.

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Ivoclar-vivadent IPS e.max Ceram User Manual Page 63

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