The significance of an erroneous recording of the centre of mandibular rotation in orthognathic surgery.
The effect of post-operative jaw position of an error in locating the true centre of mandibular rotation was evaluated using a computer-simulation model and a mock surgery model. The centre of the condyle serves as a reference point in surgical procedures involving the maxilla. The purpose of this study was to describe the amount of malpositioning of the jaws at surgery due to a discrepancy between a simulated true centre of rotation and the centre of the condyle. The results showed, that a 20 mm error in location of the true centre of rotation could result in a 3 mm horizontal malpositioning of the maxilla.
Department of Oral and Maxillofacial Surgery, Royal Dental College and University Hospital (Rigshospitalet), Copenhagen, Denmark.
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A
Nattestad
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P
Vedtofte
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Mosekilde
D000704:Analysis of Variance; D002508:Cephalometry; D003198:Computer Simulation; D003725:Dental Articulators; D003766:Dental Occlusion; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology; D007574:Jaw Relation Record; D008310:Malocclusion / Q000601:surgery; D008334:Mandible / Q000033:anatomy & histology* / Q000601:surgery; D008335:Mandibular Condyle / Q000033:anatomy & histology*; D008437:Maxilla / Q000601:surgery*; D008953:Models, Anatomic; D009068:Movement; D010027:Osteotomy / Q000379:methods*; D012399:Rotation; D014716:Vertical Dimension