What system allows for metal-free dental restorations to be fabricated and placed in a single visit?

The correct choice is a CAD/CAM restorative system, which stands for Computer-Aided Design and Computer-Aided Manufacturing. This technology enables dental professionals to design, create, and place metal-free restorations—such as crowns, inlays, and onlays—within a single appointment. The process begins with digital scanning of the tooth, which captures a precise 3D image. This data is then used to design the restoration on a computer. Once the design is finalized, a milling machine fabricates the restoration using a block of material, such as ceramic or composite resin, specifically designed for dental use. After fabrication, the restoration is placed immediately, providing a highly convenient option for patients and eliminating the need for multiple visits.

Other systems listed, such as digital impression systems, involve capturing the shape and contours of the dentition but do not inherently include the fabrication and placement of restorations within the same appointment. The traditional crown and bridge system typically requires multiple visits, as temporary restorations are often used while the final product is being crafted. A resin-based restoration system primarily refers to the use of composite materials and may involve conditions that also require multiple appointments for curing and processing.