A comparative study on the change of postoperative facial hard tissue profile after maxillary rotational surgery
Journal of the Korean Association of Oral and Maxillofacial Surgeons
; : 264-271, 2011.
Article
em Ko
| WPRIM
| ID: wpr-33684
Biblioteca responsável:
WPRO
ABSTRACT
PURPOSE: This study evaluated retrospectively the postsurgical facial hard tissue profile of a Le Fort I osteotomy with/without posterior impaction and rigid internal fixation to correct mandibular prognathism. After observing a difference between the two groups, this measurement was used to prepare a treatment plan for 2-jaw surgery. Patients and Methods: Thirty patients who had undergone orthognathic surgery in Pusan National University Dental Hospital were enrolled in this study. Fifteen patients were treated using a Le Fort I osteotomy with posterior impaction and mandibular setback bilateral sagittal split ramus osteotomy, and the other fifteen patients were treated without posterior impaction. The preoperative (T0), immediate postoperative (T1) and six-month follow-up period (T2) cephalograms were taken and difference between T1-T0 and T2-T2 was analyzed. RESULTS: Both groups was FH-ABp, SNB and ANB showed significant changes in the measurement, whereas only the posterior impaction group showed a change in the SN-U1, occlusal plane, posterior facial height, surgical movement difference from the L1 and B-point. There was no significant statistical change between the immediate postoperative (T1) and six-month follow-up (T2) hard tissue analysis in the two groups. CONCLUSION: A Le Fort I osteotomy with posterior impaction is considerable for patients with a flat occlusal plane angle, large posterior facial height, prominent B-point, pogonion and labioversed incisal inclination if the indications are well chosen.
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Texto completo:
1
Índice:
WPRIM
Assunto principal:
Osteotomia
/
Prognatismo
/
Estudos Retrospectivos
/
Seguimentos
/
Oclusão Dentária
/
Cirurgia Ortognática
/
Osteotomia Sagital do Ramo Mandibular
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Humans
Idioma:
Ko
Revista:
Journal of the Korean Association of Oral and Maxillofacial Surgeons
Ano de publicação:
2011
Tipo de documento:
Article