Research suggests that today's milled CAD/CAM restorations are stronger than those milled from earlier materials. The restoration then can be customized with stains and glazes to create a more natural look, before being fired in an oven (similar to ceramics and pottery), and then finished and polished.
Once the final restoration is designed, the crown, inlay, onlay, veneer or bridge is milled from a single block of ceramic material in a milling chamber. Some cases could take minutes, while others could require a half-hour or more of design time to ensure quality. The amount of time it takes for a dentist, in-office restoration designer or laboratory technician to design a restoration varies based on skill, experience, and complexity of case and treatment. The dentist or laboratory technician then uses those 3-D images and CAD software to draw and design the final restoration. Alternatively, the 3-D images can be obtained by scanning a traditional model obtained from conventional impressions of the preparations. The CAD/CAM computer displays a 3-D custom image of your prepared tooth or teeth obtained by digitally capturing the preparations with an optical scanner. Dental CAD/CAM technology is available for dental practices and dental laboratories, enabling dentists and their staff (or a laboratory technician) to design restorations on a computer screen.
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