Digital dentistry is the hot topic these days in both
publications and lectures - and for good reason; it’s the future of dentistry.
Hardware technology and software programing are moving forward at a torrid pace
and are actually evolving faster than the industry’s ability to absorb. At ROE
we work hard to stay current on digital technology, providing our clients
industry- leading restorations manufactured to the highest standards.
Currently, through our iRis system, we digitally produce over 65% of our products,
and every month find better ways to fabricate restorations with this
technology. We have been anxious to convert our manufacturing processes because
digital technology allows us to produce stronger, more consistent and precise
restorations with faster turnaround times, often at a lower cost. We have
recently moved the fabrication of our provisional restorations into the digital
age with results that you’ll be excited to learn about.
Virtual Diagnostic to be Milled In PMMA |
Laboratory fabricated provisionals have always presented
challenges - the need for chairside additions, relining with limited material
thickness, and insufficient material choices, all inhibit optimal esthetics and
strength. Denture teeth bonded together with acrylic are esthetic, but usually
do not offer long-term strength. Light-cured composites are a possibility;
however, they can be difficult to reline and even harder to add-to or modify
chairside. Processed acrylic has traditionally been the best compromise.
With the use of CAD/CAM technology, ROE is now offering provisional
restorations fabricated from a special dense, porosity-free
polymethylmethacrylate commonly called PMMA, which is milled in our industrial
milling machines. Technicians use our powerful CAD system to design ideal
anatomy and contours with materials much stronger than hand-mixed acrylic.
The benefits extend beyond strength and contours. Using our
CAD/CAM system we can digitize a preoperative model or diagnostic wax-up and
superimpose it over a study cast. This process allows us to maintain beneficial
contours and precisely duplicate a patient-approved diagnostic work-up. Due to
the strength of the material we are able to mill single unit shells and even
full arch bridges as thin as 1/2mm. Once the milling is complete we
characterize the units with stain and, when needed, customize with layering
materials, particularly when incisal translucency is requested.
When extra-strong, long-term provisionals are required, these
shells can be reinforced internally with a CAD metal substructure. Both the outer
shell and the inner reinforcement are fabricated using the same digital
technology. Due to the accuracy of the fabrication process, the combined layers
can be made thinner than hand-fabricated, metal-reinforced temporaries. We also
recently started using alternative reinforcement materials in lieu of cast
metal. Fiber reinforcement (FiberForce) and Polyetheretherketone (PEEK) are
durable materials with high flexural strength. And, since both are white, they
can be easily hidden within the provisional. Our fees for provisional
restorations with this technology remain a bargain - just $30 per unit or $65
per unit with either of the
reinforcement options.
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