Universidade Estadual de Maringá, Departamento de Odontologia (Maringá/PR, Brazil).
Dental Press J Orthod. 2021 Mar 10;26(1):e211965. doi: 10.1590/2177-6709.26.1.e211965.oar. eCollection 2021.
The aim of this study was to evaluate the thickness of the zygomatic-maxillary cortical bone using computed tomography in different skeletal patterns.
A total of 54 patients of both sexes, divided into three groups according to the vertical skeletal pattern, were evaluated for cortical bone thickness of the anterior slope of the zygomatic process of the maxilla, using cone beam computed tomography. Measurements were made at 2mm, 4mm, 6mm, 8mm and 10mm above from first molar mesial root apex. Vertical skeletal pattern was determined by Frankfurt mandibular angle (FMA).
The hyperdivergent pattern had the lowest cortical thickness value, nevertheless, no patient in the hyperdivergent group presented cortical thickness exceeding 2mm, and no patient in the hypodivergent group presented cortical thickness less than 1mm. However, the correlation between cortical thickness and mandibular plane angle was weak and not significant.
Although higher prevalence of thick cortical was observed in the hypodivergent patients, and thin cortical groups in the hyperdivergent group, the vertical skeletal pattern could not be used as determinant of the zygomatic-maxillary cortical thickness.
本研究旨在通过计算机断层扫描评估不同骨骼形态下颧骨上颌皮质骨的厚度。
共评估了 54 名男女患者，根据垂直骨骼形态分为三组，使用锥形束计算机断层扫描评估上颌颧骨前坡皮质骨厚度。在距第一磨牙近中根根尖 2mm、4mm、6mm、8mm 和 10mm 处进行测量。垂直骨骼形态由法兰克福下颌角（FMA）确定。
高角组皮质厚度最低，但无高角组患者皮质厚度超过 2mm，亦无低角组患者皮质厚度小于 1mm。然而，皮质厚度与下颌平面角之间的相关性较弱且无统计学意义。
尽管低角患者的皮质较厚，高角患者的皮质较薄，但垂直骨骼形态不能作为颧骨上颌皮质厚度的决定因素。
