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首页> 外文期刊>Maxillofacial Plastic and Reconstructive Surgery >Three-dimensional computed tomography evaluation of craniofacial characteristics according to lateral deviation of chin
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Three-dimensional computed tomography evaluation of craniofacial characteristics according to lateral deviation of chin

机译：根据下巴的侧向偏差对颅面特征进行三维计算机断层扫描评估

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Abstract BackgroundThe relationship between the lateral deviation of chin and the upper and middle facial third asymmetry is still controversial. The purpose of this study is to evaluate the correlation of upper and middle facial third asymmetry with lateral deviation of chin using 3-dimensional computed tomography. The study was conducted on patients who underwent orthognathic surgery from January 2016 to August 2017. A total of 40 patients were included in this retrospective study. A spiral scanner was used to obtain the 3-dimensional computed tomography scans. The landmarks were assigned on the reconstructed 3-dimensional images, and their locations were verified on the axial, midsagittal, and coronal slices. The Pearson correlation analysis was performed to evaluate the correlation between chin deviation and difference between the measurements of distances in paired craniofacial structures. Statistical analysis was performed at a significance level of 5%.ResultsIn mandible, the degree of chin deviation was correlated with the mandibular length and mandibular body length. Mandibular length and mandibular body length are shorter on the deviated-chin side compared to that on the non-deviated side (mandibular length, r = ?0.897, p value 0.001; mandibular body length, r = ?0.318, p value = 0.045). In the upper and middle facial thirds, the degree of chin deviation was correlated with the vertical asymmetry of the glenoid fossa and zygonion. Glenoid fossa and zygonion are superior on the deviated-chin side than on the non-deviated side (glenoid fossa, r = 0.317, p value = 0.046; zygonion, r = 0.357, p value = 0.024).ConclusionLateral deviation of chin is correlated with upper and middle facial third asymmetry as well as lower facial third asymmetry. As a result, treatment planning in patients with chin deviation should involve a careful evaluation of the asymmetry of the upper and middle facial thirds to ensure complete patient satisfaction.
机译：摘要背景下巴的侧向偏斜与上，中面部第三不对称性之间的关系仍存在争议。这项研究的目的是使用三维计算机断层扫描技术评估上，中面部第三不对称性与下巴的侧向偏差的相关性。该研究针对2016年1月至2017年8月接受正颌外科手术的患者进行。该回顾性研究共纳入40例患者。螺旋扫描仪用于获得3D计算机断层扫描。将地标分配到重建的3维图像上，并在轴向，矢状和冠状切片上验证其位置。进行皮尔逊相关分析，以评估下颌偏差与成对的颅面结构距离测量值之间的差异之间的相关性。结果：在下颌骨中，下颌偏斜程度与下颌骨长度和下颌骨长度相关。下颌侧的下颌长度和下颌体长度要比非下颌侧的要短（下颌长度，r =α0.897，p值<0.001;下颌骨长度，r =α0.318，p值= 0.045 ）。在上，中三分之三的面部，下巴偏斜的程度与关节盂和s骨的垂直不对称有关。下颌偏侧的膝关节窝和gon骨比非偏侧好（g骨窝，r = 0.317，p值= 0.046;骨窝，r = 0.357，p值= 0.024）。具有上，中面部第三不对称性以及下面部第三不对称性。因此，下巴偏斜患者的治疗计划应包括对上，中三分之三的不对称性进行仔细评估，以确保患者完全满意。

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