Fig. 2

Digital smile design and diagnostic wax-up. a Starting from the photographic data, a digital smile design software was used for a first evaluation of the length and width of the teeth. The smile design indicated the need to increase the length and the width of the patient’s teeth, particularly in the anterior maxilla. There was a need to modify the teeth shape as well. b The information taken from the smile design was then used for the preparation of a diagnostic wax-up. c The models were mounted in articulator and the indications of the smile design were manually replicated in the wax-up. d The initial situation, the wax-up and the situation after extractions were then scanned with a desktop scanner (Deluxe®, Open Technologies srl, Brescia, Italy), in order to have all the. STL files available for upload in the guided surgery software