STEP BY STEP
TRANSLUCENT ZIRCONIA
150
Quintessenz Zahntech 2013;39(2):150–160
Range of applications
of a CAD/CAM system with
translucent and opaque ZrO
2
Knut Miller, Falko Noack
The composition and mechanical properties of Ceramill Zolid translucent zirconia
(AmannGirrbach) are comparable to those of Ceramill Zi blanks, which have been es-
tablished on the market for many years. In comparison with Ceramill Zi, Ceramill Zolid
only has a slightly reduced proportion of Al
2
O
3
,
6
to optimise the light transmission
properties.
Al
2
O
3
contributes to the opacity of the material, and it is also necessary for improving
the hydrolysis stability and, therefore, for making the material resistant to external influ-
ences. This has been achieved in Ceramill Zolid using chemical restructuring, ensuring
an adequate diffusion barrier for the yttrium, which is also accompanied by very good
aging resistance, i.e. long-term stability.
The sinter temperature has a decisive influence on the physical properties of the ma-
terial, and therefore is also important for long-term stability. One of the development
objectives for Ceramill Zolid was that this material should be sintered at the same tem-
perature as conventional Ceramill Zi – namely at 1,450°C.
Abstract
Using the example of a single
model the author demonstrates
the breadth of possibilities the
user has with the Ceramill CAD/
CAM system (AmannGirrbach,
Koblach, Austria) and how diver-
se and comprehensive this sys-
tem can be with Ceramill Zi and
Ceramill Zolid materials.
Keywords
Zirconia, translucent zirconia,
CAD/CAM, virtual articulator,
abutments, crowns, bridges,
PMMA crowns, bridge with pre-
cision attachment
Introduction
1 3,4,5,6,7,8,9,10