Fig. 1

Fully digital routine in the treatment of skeletal Class III malocclusion

The colorized dotted lines mean the simulation process of orthognathic surgery and orthodontics, which were accomplished at the beginning of treatment. The colorized solid arrows mean the interaction between OGS and orthodontics in the simulation phase and implementation process. (i) When preoperative orthodontics was finished, the last preoperative orthodontic model was used for dento-maxillofacial model reconstruction, based on which a virtual surgical plan was performed. (ii) The postoperative occlusion obtained from the virtual surgical design was in accordance with the postoperative dental alignment obtained from the Invisalign simulation prior to surgery. (iii) The whole orthodontic process was simulated initially with Invisalign at the beginning, containing preoperative and postoperative orthodontics. The preoperative phase was designed to meet the needs of OGS, and based on surgery simulation, immediate postoperative dentition can be attained early to design subsequent orthodontics. Thus, the entire procedure of orthodontics and orthognathic surgery is fully digital and seamless