Dental CAD/CAM: a millstone or a milestone?

The number of dental computer-aided design/computer-aided manufacture (CAD/CAM) systems commercially available is growing. These systems range in complexity and application, from manual copy milling of inlays to full computer-controlled systems with a complex library of tooth forms enabling the automated production of crowns and bridges. All CAD/CAM systems permit the production of restorations at the chairside and, at least in theory, eliminate potential inaccuracies associated with the traditional, multistage production of indirect restorations. Their use also minimizes cross-infection. However, the capital costs of these systems are great and a high throughput of restorations is required in order to achieve financial viability. Long-term clinical studies are required before a final judgement may be made of the use of these relatively new systems.