Surgery-first approach using a three-dimensional virtual setup and surgical simulation for skeletal Class III correction

Abstract

A 19-year-old woman presented to our dental clinic with anterior crossbite and mandibular prognathism. She had a concave profile, long face, and Angle Class III molar relationship. She showed disharmony in the crowding of the maxillomandibular dentition and midline deviation. The diagnosis and treatment plan were established by a three-dimensional (3D) virtual setup and 3D surgical simulation, and a surgical wafer was produced using the stereolithography technique. No presurgical orthodontic treatment was performed. Using the surgery-first approach, Le Fort I maxillary osteotomy and mandibular bilateral intraoral vertical ramus osteotomy setback were carried out. Treatment was completed with postorthodontic treatment. Thus, symmetrical and balanced facial soft tissue and facial form as well as stabilized and well-balanced occlusion were achieved.

Concepts, protocol, variations and current trends in surgery first orthognathic approach: a literature review

“…38 Oh et al 39 reported improved accuracy, reduced cost and duration and complexity, as compared to the manual technique using 2.5 VMS system. Uribe et al 40 and Ima et al 22 utilized the 3D VMS system consisting of 3D imaging technique and virtual models for treatment of subjects with skeletal Class III and facial asymmetry. They reported improved treatment outcomes over the manual method.…”

Comparison of the occlusal contact area of virtual models and actual models: a comparative in vitro study on Class I and Class II malocclusion models

“…Currently, intraoral scanners are not only used in obtaining images of the single tooth and the dental arch, they are also utilized in the diagnosis and planning of orthognathic surgery and orthodontic setups [ 7 , 9 , 10 , 29 ]. Using digital images obtained from scans to analyze the state of occlusal contact as well as the morphology of the occlusal surface of the complete maxillo-mandibular dentition has become more common.…”

Evaluation of stability after pre-orthodontic orthognathic surgery using cone-beam computed tomography: A comparison with conventional treatment

“…Few previous studies have evaluated the postsurgical skeletal changes after IVRO with POGS. 14 25 26 Kim et al 26 reported a 0.6-mm forward and 2.9-mm upward movement of the Pog and menton at the 1-year follow-up, and Choi et al 14 reported a 1.9-mm and 2.7-mm upward movement at the B point and Pog at the 1-year postsurgical follow-up. Similar to the findings of our study, these results indicate greater upward movement of the mandible after IVRO in patients undergoing POGS.…”