PMC5238599_01
Facial and oral photographs in pretreatment.
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She had a mandibular protrusion, a concave facial profile and facial asymmetry (Fig. 1).
Panoramic X-ray after the segmental Le Fort I osteotomy and IVRO.
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Fort I osteotomy (mx1 impaction, 2 mm; mx6 expansion, 5 mm; mx6 advancement, right 6 mm, left 4 mm; mx1 segmental area, bone augmentation) and mandibular bilateral intraoral vertical ramus osteotomy (IVRO, right M6, 6 mm and left M6, 4 mm, setback) was performed. Fig. 2 shows a panoramic X-ray view after the segmental Le Fort I osteotomy and IVRO.
Facial and oral photographs at debonding.
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Fig. 3 shows the extraoral and intraoral views at debonding 10 months after orthognathic surgery.
Superimposition of the lateral cephalograms. Solid line: 3 months after orthognathic surgery, dotted line: debonding after 10 months after orthognathic surgery.
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From the post-operative bimaxillary stability shown in Fig. 4, it appeared that regeneration of the normal jawbone had occurred.
CT images of the osteotomy line of maxilla and mandible 12 months after orthognathic surgery. arrows: osteotomy site with bone regeneration.
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It was also confirmed that the bone joining was performed normally even at the maxillary posterior part and the overlapping part of bone of the mandible IVRO (Fig. 5, arrows).