The aim of this study was to assess the difference of palatal morphology in different vertical patterns between skeletal Class I subjects and skeletal Class II subjects with retrusive mandible. Seventy-six skeletal Class II subjects with retrusive mandible (38 females, 38 males) and 85 skeletal Class I subjects (45 females, 40 males) were collected retrospectively and divided into hyperdivergent, normodivergent and hypodivergent groups. CBCT images of these subjects were reoriented by Dolphin 3D Imaging software. Three-dimensional (3D) maxilla was segmented by ProPlan software before using Geomagic Studio software to reconstruct 3D palatal morphology. Deviation patterns on 3D colored map analysis was performed to compare the difference of 3D palatal morphology between different groups. 3D colored map analysis showed that male’s palate was higher and wider than that of female in the posterior part, regardless of different sagittal and vertical patterns. In skeletal Class II subjects with retrusive mandible, males with hyperdivergent and normodivergent showed higher and narrower in the posterior part of palate, while females with hyperdivergent and normodivergent had a higher but no obviously narrow palate compared with the hypodivergent subjects. Skeletal Class II subjects with retrusive mandible showed flatter and narrower in the posterior part of palate than that of skeletal Class I subjects. Sagittal and vertical patterns have great influence on the palatal morphology and as the vertical dimension increased, the palate tended to be higher and narrower.

中文翻译：

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矢状和垂直模式不同的受试者的三维重建pa形态的初步比较。

这项研究的目的是评估骨骼I类对象和下颌骨下颌类II类对象在不同垂直模式下of形态的差异。回顾性收集76例具有下颌骨下陷的骨骼II类受试者（女性38例，男性38例）和85例骨骼I类骨骼受试者（45例女性，40例男性），并将其分为高散，正散和低散组。这些对象的CBCT图像通过Dolphin 3D Imaging软件进行了重新定向。在使用Geomagic Studio软件重建3D lat骨形态之前，通过ProPlan软件对三维（3D）上颌骨进行了分割。进行3D彩色图分析的偏差模式以比较不同组之间3D lat形态的差异。3D彩色地图分析显示，无论矢状和垂直方向如何，男性的后颚比女性的颚高和宽。在下颌骨退缩的骨骼II类受试者中，高发散和正发散的男性在of后部显示更高和更窄，而高发散和正发散的女性与低散发的受试者相比，其上颚更高但没有明显狭窄。下颌骨退缩的II类骨骼受试者的I骨后部比I类骨骼更平坦，更窄。矢状和垂直模式对the的形态有很大的影响，并且随着垂直尺寸的增加，pa倾向于变得越来越高和越来越窄。不论矢状和垂直模式如何。在下颌骨退缩的骨骼II类受试者中，高发散和正发散的男性在of后部显示更高和更窄，而高发散和正发散的女性与低散发的受试者相比，其上颚更高但没有明显狭窄。下颌骨退缩的II类骨骼受试者的I骨后部比I类骨骼更平坦，更窄。矢状和垂直模式对the的形态有很大的影响，并且随着垂直尺寸的增加，pa倾向于变得越来越高和越来越窄。不论矢状和垂直模式如何。在下颌骨退缩的骨骼II类受试者中，高发散和正发散的男性在of后部显示更高和更窄，而高发散和正发散的女性与低散发的受试者相比，其上颚更高但没有明显狭窄。下颌骨退缩的II类骨骼受试者的I骨后部比I类骨骼更平坦，更窄。矢状和垂直模式对the的形态有很大的影响，并且随着垂直尺寸的增加，pa倾向于变得越来越高和越来越窄。高发散和正常散发的女性与低发散的受试者相比，口感较高，但没有明显狭窄的上颚。下颌骨退缩的II类骨骼受试者的I骨后部比I类骨骼更平坦，更窄。矢状和垂直模式对the的形态有很大的影响，并且随着垂直尺寸的增加，pa倾向于变得越来越高和越来越窄。高发散和正常散发的女性与低发散的受试者相比，口感较高，但没有明显狭窄的上颚。下颌骨退缩的II类骨骼受试者的I骨后部比I类骨骼更平坦，更窄。矢状和垂直模式对the的形态有很大的影响，并且随着垂直尺寸的增加，pa倾向于变得越来越高和越来越窄。