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首页> 外文期刊>International journal of oral and maxillofacial surgery >Comparison of the computed tomography values of the bone fragment gap after sagittal split ramus osteotomy in mandibular prognathism with and without asymmetry
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Comparison of the computed tomography values of the bone fragment gap after sagittal split ramus osteotomy in mandibular prognathism with and without asymmetry

机译：矢状不规则和不对称不对称下颌前突矢状劈开截骨后截骨断层计算机断层扫描值的比较

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摘要

The purpose of this study was to compare computed tomography (CT) Hounsfield unit values of bone fragment gaps after sagittal split ramus osteotomy (SSRO) in patients with and without asymmetry, and to evaluate differences between the deviated and non-deviated sides in asymmetric patients. Thirty-two patients who underwent a bilateral SSRO were included in this retrospective study. Patients were divided into symmetric and asymmetric groups by cephalometric analysis. CT values of the bone fragment gap were measured at 1 week and at 1 year after surgery. There were significant differences between CT values obtained at 1 week and at 1 year after surgery for all measurement points. However, there were no significant differences in CT values between symmetric and asymmetric patients at either 1 week or 1 year after surgery. Among asymmetric patients, there were no significant differences between the deviated and non-deviated sides at 1 week or 1 year after surgery. This study showed ossification of the bone fragments and adaptation to change the mandible form in patients with and without asymmetry following SSRO.
机译：这项研究的目的是比较不对称和不对称患者在矢状劈裂支截骨术（SSRO）后的骨层间隙的计算机断层扫描（CT）的Hounsfield单位值，并评估不对称患者偏侧和非偏侧之间的差异。这项回顾性研究包括了接受双侧SSRO治疗的32例患者。通过头颅测量将患者分为对称组和不对称组。术后1周和1年测量骨碎片间隙的CT值。对于所有测量点，在术后1周和术后1年获得的CT值之间存在显着差异。但是，对称性和非对称性患者术后1周或1年的CT值均无显着差异。在不对称患者中，术后1周或1年时，偏侧和非偏侧之间无显着差异。这项研究表明SSRO后有和没有对称性的患者，骨碎片的骨化和适应改变下颌骨的形式。

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