'Porcelain Bonded Crowns' still offer a gold standard in fixed restorative
dentistry for single unit cases to full arch bridge cases and is a cost
effective alternative to all ceramic solutions. Porcelain bonded crowns are
biocompatible and can range from single units to full arch bridges (long
span
and short) and is routinely used in restorative cases that involve implants.
All porcelain bonded crowns have a metal substructure with layered ceramic.
The
metal substructure can be made with either non precious, semi precious or
precious alloys which bonds together with our layered ceramic to provide
functional and aesthetically pleasing restorations that last.
We train all our technicians in-house on the PTC system to quality control
our
crown & bridge standard. The PTC system ensures consistent results and
defines
parameters in aesthetics, occlusion, function, fit , margins and contact
areas
with every case quality controlled from impression to the final restoration.
Technical features:
All porcelain bonded crowns have metal substructures that are opaqued with
the
correct shade to stop any traces of metal showing through the ceramic. The
ceramic is layered on top of the metal substructure and is fused to the
opqaued
metal substructure in a ceramic furnace. An inter occulsal space of 1.5mm to
3mm
is recommend to allow enough space for the metal substructure and layered
ceramic without damaging the flexural strength of the crown under
mastication.
If there is not enough space for layered ceramic an occulsal metal island
may be
used.
'Porcelain Shoulder Margins' are used for the aesthetically concerned
patient to
mask metal at the margins of the PBC. Special effects and textures can also
be
added to provide a aesthetically pleasing crown with staining to provide a
natural, realistic porcelain bonded crown.
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