First, let's modify the question to be "How is a crown made for my tooth?”
The patient is numbed in the area of the tooth for comfort during the procedure, just as when a filling is placed. The tooth is then gently tapered and/or reduced on the outer surfaces (vertical and biting surfaces). If necessary, the tooth is "built-up" to fill in places that have been affected by decay or have defective old filling material. A temporary crown is made and impressions are taken, unless an in-office CAD-CAM machine is used for crown fabrication.
The laboratory pours stone models from the impression, creates the crown from the desired material and the crown is returned to the dentist for fitting and delivery.
At the delivery appointment the temporary crown is removed, the tooth is cleaned and the crown is checked for proper seating on the tooth, occlusion, contacts with adjacent teeth, contour, relationship with gum tissue and appearance. Quite a lot of things to consider, don't you think.
When all is satisfactory, the crown is cemented to the tooth. The crown has now been fabricated, fitted and cemented.
More Answers from Saul Miller