Friday, December 21, 2012

Excellent provisionals from digital technology

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 chariside. The best compromise has been processed acrylic, until now.

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 fabricated 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 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.

SureTempTM        $32 per unit