A Strong Alternative To Metal
At last, the dental profession has a high-strength, all-ceramic
alternative to the traditional PFM restoration. Armstrong Laboratory in conjunction with
Nobel Biocare, is pleased to offer you and your patients a revolutionary new crown called,
Procera AllCeram is a high strength all-ceramic crown combining
translucent, metal-free esthetics with increased flexural strength, biocompatibility and
precision fit. Procera AllCeram is the first universally recommended all-ceramic crown for
both anterior and posterior applications.
Procera AllCeram is composed of a coping made completely of
dense-sintered, extremely pure aluminum oxide covered by baked-on porcelain. The sintered
coping is produced in a CAD/CAM industrial process known as the Procera method, which
ensures optimal fit, great strength, non-porosity and good translucence.
Procera AllCeram has been thoroughly tested since 1989. Nearly 200,000
units have been placed in Europe and Canada in the last four years. Now that it’s
available in the United States, your satisfaction is guaranteed. Procera is backed by a
five-year warranty from Nobel Biocare.
Aluminum Oxide Core: The
core (or coping) of a Procera crown is made of a densely sintered pure aluminum oxide. The
patented sintering process creates a strong, non-porous bioceramic that Nobel Biocare has
applied to AllCeram, Cera One, and Cera Adapt abutments, as well as other implant
applications such as hip joints. It’s semi-translucent and provides the veneering
porcelain with a natural, warm dentin-colored core to establish a natural shade blend
Procera Veneering Porcelain: A
special ceramic with a thermal expansion coefficient specifically designed for the high
strength sintered core has been developed for the Procera technique. This ceramic is a
highly sophisticated system with a wide range of dentins, translucents, modifiers, and
incisals to provide an extremely natural shade blend with vital translucent esthetics.
This ceramic is 74% less abrasive than a conventional PFM.
When your models arrive at the laboratory, the die of the prepared
tooth is scanned in the Procera Scanner, which transfers the information to a PC data
file. The final design enhancements of the coping (desired shape, overall thickness,
precise angle of emergence, and any final margin refinements) are defined. This digital
information is then transmitted via modem to the Procera production facility.
At this facility, a die model is precision milled by a
computer-controlled milling machine. High-purity aluminum oxide powder is thinly pressed
using very high pressure to produce the dense coping’s inside surface. The outside of
the coping is then milled to the desired design of the coping before the final high
temperature (1,550 C) sintering process.
The finished coping is then sent back to the laboratory. Here,
porcelain is stacked and baked on to produce the final restoration.
Above: Comparing two central PFM crowns with two
central Procera crowns.
Below: Comparing the strength of Procera to other all ceramic
For more information, e-mail us or call (in Louisville) (502) 583-7631 or toll free (800) 626-6276
Procera is a copyright of Nobel Biocare