Ivoclar Vivadent IPS e.max CAD Chairside v.1 - Handbuch (Seite 65)

13
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 deter-
mined. In order to achieve the best possible true-to-nature results, shade determination should be
carried out at daylight. Furthermore, the patient should not wear clothes of intensive colours and/or lip-
stick.
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 allows the clinician to select
the appropriate IPS e.max CAD blocks in terms of shade and translucency based on
the indication.
Please refer to the table on page 49 for block selection.
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 and cut-back technique)
6. Cementation material
Please refer to the table on page 49 for block selection.
Overview
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Example of the preparation shade effect
Crown made of IPS e.max CAD HT B1 on different preparation shades.