Computer-assisted Planning and 3D-Printed Splint Manufacturing in Orthognathic Surgery for Correction of Skeletal Class III Patients with Facial Asymmetry: Case Report

Siying Liu,Yulin Shi, Hongtao Shang, Yin Ding, Junjie Wu

The treatment of skeletal facial asymmetry, especially accompanied with skeletal Class III deformity, could be complex and challenging. In this case report, we present the orthodontic and surgical management of a 20-year-old girl who had a severe craniofacial deformity, including skeletal facial asymmetry and mandibular prognathism. During preoperative orthodontics, 2 upper first premolars were extracted to allow the retraction and upright of upper anterior teeth, while the lower anterior teeth were proclined for decompensation. The upper and lower arch width were also coordinated before surgery. Computer-assisted 3- dimentional (3D) planning and simulating was used to define the exact special position of maxilla, mandible and chin. Intermedial and final splints were also manufactured by computer designing and 3D printing. The preoperative planning was thus precisely transferred to patient during surgical procedure. Postoperative orthodontic treatment completed the final occlusal adjustment. The clinical results showed that the patient's facial esthetics was significantly improved with good symmetry and straight profile, and a desirable occlusion was achieved.