A hybrid workflow for fabricating diagnostic trial restorations using a two-piece additively manufactured index

The accuracy of diagnostic trial restorations depends on the rigidity of the restoration index. However, as the index becomes stiffer, its removal from the mouth without the detachment of the underlying trial restoration can be challenging, especially in patients where a diagnostic trial restoration is required for a complete arch rehabilitation. The present manuscript describes a step-by-step hybrid technique to transfer the virtual diagnostic waxing into the patient's mouth by using a 2-piece index. An additively manufactured custom tray relined on a diagnostically waxed cast using polyvinyl siloxane material is used to fabricate a silicone index. The presented technique provides an index with higher rigidity and uniformity compared with conventional methods, enabling sequential removal after the polymerization of the resin interim material.