all or nothing

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· dasdental labor · LXII · 4/2014 25
All or nothing Function
The second tab takes the dental techni-
cian to the definition of the crown mar-
gin. The margin is minimally strengthe-
ned to suit the material to prevent
breaking off at the margin or chipping
(Fig. 7).
Design
When the next tool is opened the soft-
ware positions the relevant library
teeth on the individual dies. The dental
technician moves the teeth to the re-
quired position by sliding, rotating and
scaling them (Fig. 8). The technician
simply orientates according to the situ
scan to find the original position. The
teeth can then be moved into the cor-
rect position and alignment according
to the situation. The pontics can then
be calculated to the gingiva using the
“Pontic” tab – exactly on contact, with
a defined distance or defined penetra-
tion, depending on requirements (Fig.
9 to 10). The library teeth are calcula-
ted in the shell of the diagnostic model
to assume the initial situation using
the “Adapt to the situ model” tool, so
that the shape, size and alignment of
e Fig. 2 Positioning the diagnostic
model; a cornerstone of the design in
producing a functional result
e Fig. 3 Anterior restoration true to the
situation due to optimal positioning of
the original situation via the working
model
e Fig. 4 Definition of the crown margins,
structured stages of the design based on
clear guidelines of the Wizard
e Fig. 5 Fitting of each single reduced
crown on the die using a mouse click
f Fig. 6 Digital guidelines
during model preparation;
definition of the cement gap
thickness
f Fig. 7 Determination of
the crown margins using
individually coordinated
parameters
Fig. 4
Fig. 2 Fig. 3
Fig. 5
Fig. 7
Fig. 6