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Vita In-Ceram is an alumina core system which produces a crown with
approximately 3 times the flexural strength of its nearest competitor.
Due to the glassy nature of the material crowns more closely
resemble natural teeth and excellent aesthetics can be archieved.
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The porcelain is made stronger by the use of pure alumina and
infiltrating if with coloured glass. A discoloured tooth or gold post
will not affect the shade and the use of Vita Alpha porcelain creates
a natural looking restoration.
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There are important criteria to note with preparation as there should
be a heavy chamfer of shoulder preparation of 1.0mm labially
0.5-0.7mm in other areas. Preps should be slightly tapered and not
undercut. With the preparation of bridges particular attention needs
to be paid to a non-undercut preparation and parallel paths of
insertion. Occlusal clearance should be 1.5mm and bevels are not
recommended.
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