Temporaries are typically required after preparing teeth for veneers or crowns. I usually try to make my temporaries close in size, length, and color to the proposed permanent teeth. This gives us a “dress rehearsal” and allows the patient to try the changes before fabricating the final porcelain restorations. The technician uses the temporaries as a blueprint for fabricating the final restorations, as changes can be made easily to the temporaries. The temporaries usually look really nice – but not as nice as the permanent teeth!