CAD CAM Digital Dentistry | CAD CAM 数字牙科
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CAD CAM Digital Dentistry
CAD CAM Digital Dentistry
The CAD CAM system uses computer-aided design and manufacture (CAD CAM) technology. This can be used to fabricate porcelain and composite inlays, onlays, crowns and porcelain veneers within a single visit.
  • Digital Impression

    For many years, the dentist takes an impression of your teeth with conventional mould. This conventional method has a few disadvantages that may lead to less accurate impression:

    • Expansion and contraction of materials and poured models
    • The possibility of bubbles, pulls, tears and distortion
    • The fragility of stone models
    • Patient’s discomfort

    With CAD CAM technology using intraoral scanners, all of the above are eliminated as the dentist now scans your teeth and thereafter sends the digital impression to a dental laboratory. If there are any problems with the impression, the dentist can see it right away on the screen and make necessary adjustments. If the dentist is not happy with the scan, it is relatively easy to re-take.

    Over at the laboratory, the digital impressions can be downloaded directly to the millers to produce CAD CAM restorations. This process not only greatly reduces patient’s discomfort, it also improves accuracy and aesthetics.

  • Inlays and Onlays

    Sometimes a cavity is too large to be restored with simple filling materials such as composite resin. Traditionally, this leaves you with the only option of crowning or placing a “cap” on the tooth. This can be quite aggressive especially if only part of the tooth is affected.

    At Q & M dental clinics, we believe in preserving as much of your natural tooth structure as possible. That is the reason why we employ the very latest CAD CAM technology.


Inlays and onlays are essentially ceramic inserts that are many times stronger than normal fillings. They have the same advantage that only the area affected by decay is removed. After removing all the decay, the dentist scans the tooth affected along with a few neighbouring teeth, a process we call the “digital impression”. He then designs the inlay or onlay. Once done, the inlay or onlay is then very accurately sculpted from solid block of ceramic by a machine called a miller. The ceramic restoration is then hardened in an oven, polished to a high shine and is now ready to be cemented onto the tooth.