| Title | Skeletal and dento-alveolar stability of Le Fort I intrusion osteotomies and bimaxillary osteotomies in anterior open bite deformities. A retrospective three-centre study. | | Author(s) | Hoppenreijs TJ, Freihofer HP, Stoelinga PJ, Tuinzing DB, van't Hof MA, van der Linden FP, Nottet SJ | | Institution | Department of Oral and Maxillofacial Surgery, Rijnstate Hospital, Arnhem, The Netherlands. | | Source | Int J Oral Maxillofac Surg 1997 Jun; 26(3):161-75. | | MeSH | Adolescent
Adult
Alveolar Process
Analysis of Variance
Bone Plates
Bone Wires
Cephalometry
Female
Follow-Up Studies
Humans
Incisor
Internal Fixators
Male
Malocclusion
Malocclusion, Angle Class I
Malocclusion, Angle Class II
Mandible
Maxilla
Middle Aged
Orthodontics, Corrective
Osteotomy
Osteotomy, Le Fort
Recurrence
Reproducibility of Results
Retrospective Studies
| | Abstract | A sample of 267 patients with maxillary hyperplasia, a Class I or Class II/I occlusion and anterior vertical open bites, collected from three different institutions, was analysed regarding stability after surgical corrections. Skeletal and dento-alveolar stability of the maxilla, and positional changes of the mandible and of the incisors were evaluated. All patients underwent Le Fort I intrusion osteotomies and in 92 patients segmentation of the maxillae was performed. An additional bilateral sagittal split advancement osteotomy was performed in 123 patients. Intraosseous wire fixation was used in 153 patients and rigid internal fixation in 114 patients. Cephalometric radiographs were collected before orthodontic treatment, before surgery, immediately after surgery, one year postoperatively and at the latest follow up. The mean follow up was 69 months (range 20-210 months). It can be concluded that patients with anterior open bites, treated with a Le Fort I osteotomy in one-piece or in multi-segments, with or without bilateral sagittal split osteotomy, exhibited good skeletal stability of the maxilla. Rigid internal fixation produced the best maxillary and mandibular stability. The mean overbite at the longest follow up was 1.24 mm and a lack of overlap between opposing incisors was present in 19%. The overbite did not differ significantly between the different treatment procedures, probably due to compensatory movements of the mandibular and maxillary incisors. | | Language | eng | | Pub Type(s) | Journal Article
Multicenter Study
| | PubMed ID | 9180224 |
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