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Maxillofacial Plastic and Reconstructive Surgery
Fig. 1 | Maxillofacial Plastic and Reconstructive Surgery

Fig. 1

From: Changes in facial width according to the ostectomy level of the proximal bone segment in intraoral vertical ramus osteotomy for mandibular prognathism

Fig. 1

For example, panoramic radiographs and three-dimension (3D) image for the osteotomy group. The surgery patients were categorized into two groups depending on the level of the mandibular ostectomy used on the proximal segment. A Mandibular tooth surface–level group (superior ostectomy group; SO group) comprised patients in whom the height of the ostectomy of the proximal bone segment was at the level of the mandibular tooth occlusal surface. B Mandibular inferior border–level group (inferior ostectomy group; IO group) comprised patients in whom the height of the mandibular osteotomy of the proximal bone segment was at the level of the mandibular inferior border cortex. C Three-dimensional image for the mandibular tooth surface–level group (superior ostectomy group; SO group) and mandibular inferior border–level group (inferior ostectomy group; IO group). The two horizontal planes show the cut heights of the proximal segment. The upper and lower planes correspond to the SO and IO groups, respectively

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