Single Visit Crowns, Onlays and Veneers
In the past decade, Computer Aided Design and Computer Aided Manufacturing (CAD/CAM) has revolutionized dentistry. 3D scanners, computer software and 3D milling machines and printers now aide in providing patients with an optimal restoration and more comfortable, quicker care.
3D scanners enable dentists to acquire accurate digital impressions of teeth that can be imported into CAD software. The impression process was traditionally completed using alginate or other rubber-like materials. The alginate was mixed, placed in the mouth over the teeth, left a few minutes to set, removed, and finally poured into a plaster case. Digital impressions acquired by the use of handheld 3D scanners have eliminated most of these steps, making it more comfortable for patients, and less time consuming for patients and dentists.
Once an impression is captured digitally the CAD software is used to design the restoration. With the information captured in the impression, the software assists in the design by highlighting and even suggesting various aspects of the restoration including , shape, contour and height of the teeth. Newer generations of CAD dental software have made it possible to design multiple restorations at the same time and have features that allow dentists to perform
Milling machines and 3D printers now make it possible to mill or print a crown, onlay or veneer from porcelain. The milling machines can mill a single restorations in less than 10 minutes out of a solid block of porcelain. Porcelains used for milling and printing and milling has also advanced and materials, like zirconia, have proven to be as durable in the mouth as traditionally all-metal restorations.