Technology and Imaging
Digital impression
A digital impression is a 3D computer model of your teeth and gums made with a scanner. It does the job of a traditional impression made with putty or paste.
A traditional impression uses a tray of soft material that sets in your mouth. A digital impression is made by an intraoral scanner instead. The scan becomes a three-dimensional file that a dentist or lab can use to design a crown, bridge, or other piece.
A review of studies found that digital impressions show accuracy comparable to conventional impressions. Another study found patients accepted them more readily and that the scan took less working time. Digital impressions fit with CAD/CAM design and can cut down on material waste.
Results still depend on the case and the skill of the operator. Ask your dentist which method suits your treatment.