During a crown preparation appointment, when are preformed provisional crowns tried in for size and shape?

Preformed provisional crowns are typically tried in after the tooth preparation has been completed. This timing is essential because the tooth preparation alters the shape and size of the tooth, thus determining how well the provisional crown will fit. During this stage, the dental assistant or the dentist will assess the provisional crown for proper fit, occlusion, and aesthetics, ensuring that it effectively serves its purpose while the final crown is being fabricated.

Trying in the provisional crown post-preparation allows for any necessary adjustments to be made based on the new contours of the prepared tooth. This helps to ensure that the provisional crown provides adequate protection to the tooth structure, maintains space for the final restoration, and supports proper function and esthetics during the interim period.