Long-Term Stability of Pre-Orthodontic Orthognathic Bimaxillary Surgery Using Intraoral Vertical Ramus Osteotomy Versus Conventional Surgery

Autor: Kee-Deog Kim, Hyung Seog Yu, Chung Ju Hwang, Jeong Hwa Jeong, Sung Hwan Choi, Sang-Hwy Lee
Rok vydání: 2018
Předmět:
Zdroj: Journal of Oral and Maxillofacial Surgery. 76:1753-1762
ISSN: 0278-2391
Popis: Purpose The aim of the present study was to compare the long-term stability of bimaxillary surgery using an intraoral vertical ramus osteotomy (IVRO) with and without presurgical orthodontic treatment. Materials and Methods The present retrospective study included 31 consecutive patients with skeletal Class III malocclusions who had undergone bimaxillary surgery (Le Fort I osteotomy and bilateral IVRO). Patients were divided into 2 groups based on treatment type: pre-orthodontic orthognathic surgery (POGS; n = 17) and conventional surgery with presurgical orthodontic treatment (CS; n = 14). Lateral cephalograms were obtained before surgery, 1 day after surgery, 1 month after surgery, 1 year after surgery, and 2 years after surgery to evaluate skeletal and soft tissue changes between the 2 groups. Data were analyzed using χ2 tests, Mann-Whitney U tests, repeated-measures analyses of variance, and independent t tests. Results There was no significant difference in skeletal or soft tissue measurements—with the exception of the angle between the sella-and-nasion plane and the occlusal plane (SN-OP; P Conclusions These findings suggest that POGS and CS have similar long-term stability in patients with skeletal Class III malocclusion.
Databáze: OpenAIRE