There is more than one way to make a crown. Technology has advanced fast and we are now able to take digital (optical) impressions to record the shape of your teeth, design the new crown using specialised software and furthermore mill the new crown in-house. Most of the time, the crown can be completed in one appointment on the same day by your dentist to give you a natural looking, perfectly fitting restoration. Alternatively, this digital impression can be e-mailed to the ceramist (technician) who would fabricate a crown in his laboratory.
Sometimes it is better to use more traditional methods, a silicone impression is taken of your teeth and sent to the laboratory where the technician will cast models upon which he will build a crown.