Ivoclar Vivadent Telio CS - Manual (Page 10)

Shade determination
Shade determination of the natural tooth
After tooth cleaning, the tooth shade of the non-
prepared tooth and/or the adjacent teeth is deter-
mined with the help of a shade guide. Individual
characteristics have to be considered when
determining the tooth shade (e.g. cervical shade).
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 lipstick.
Minimum material thicknesses /
layer thicknesses
The design of the restoration is the prerequisite for
successful temporary restorations and also paves
the way for the incorporation of the permanent
restoration.
The following basic guidelines have to be observed:
• In large preparations and for partially veneered
restorations, the excess available space must be
compensated by the correspond-ing dimensions
of the stable Telio CAD component and not by
the layering material.
• The transition to the layering material must not
be located in the area of the functional contact
points.
• With Telio CAD the design of the restoration
generated by the software has to be individually
adjusted in accordance with the clinical situa-
tion using the design tools. The build-up of
missing areas to support and reinforce the
shape and cusps of the restoration is constructed
with the integrated design tools of the different
types of software used.
10
Material thicknesses
1,5 mm
0,8 mm
Minimum wall thicknesses
occlusal
circular
min. 12 mm 2
min. 12 mm 2
Connector dimensions anterior
bridges
with 1 pontic
with 2 pontics
min. 12 mm 2
min. 16 mm 2
Connector dimensions posterior
bridges
with 1 pontic
with 2 pontics
Failure to observe the stipulated frame-
work design criteria, minimum thicknesses
and minimum connector dimensions may
result in clinical failures, such as fracture of
the restoration.
Telio CAD
Prevention of premature loss of retention:
Apart from a retentive preparation design, the reliable cementation of Telio CAD restorations using a
temporary luting material (e.g. Telio CS Link) depends on the accuracy of fit, which is determined by
the CAD/CAM system used.