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  • Title: Three-dimensional analyses of facial soft tissue configuration of Japanese females with jaw deformity--a trial of polygonal view of facial soft tissue deformity in orthognathic patients.
    Author: Shimomatsu K, Nozoe E, Ishihata K, Okawachi T, Nakamura N.
    Journal: J Craniomaxillofac Surg; 2012 Oct; 40(7):559-67. PubMed ID: 22078498.
    Abstract:
    In this study, we evaluated the three-dimensional (3D) soft tissue configuration of Japanese females with/without jaw deformity in order to establish the polygonal view of facial soft tissue deformity three-dimensionally. A polygonal chart was applied to assess the outcomes of orthognathic surgery for patients with mandibular hyperplasia with/without deviation. The study included 20 Japanese females with mandibular hyperplasia with/without deviation. All patients received mandibular setback surgery, and 3D measurements were carried out pre-operation, and at 1, 3 and 6 months postoperatively using a non-contact laser scanning system. Eighteen soft tissue landmarks were set on each 3D image and used to calculate a set of selected parameters. As controls, 20 Japanese females with class I occlusion were included. A polygonal chart was constructed based on the mean and S.D. of the control group. Patients with mandibular protrusion characteristically demonstrated significant variances in the items around the lower face. In asymmetric patients, deviation in the mental area disappeared postoperatively, but a small deviation remained when compared to the controls. The method used in this study seems to be a useful index for diagnosis and as a treatment plan for patients with mandibular hyperplasia with/without deviation.
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