Arango Elsa, Plaza-Ruíz Sonia P, Barrero Ivonne, Villegas Carlos
Department of Orthodontics, Fundación Universitaria CIEO-UniCIEO, Bogotá, Colombia.
Department of Orthodontics, Fundación Universitaria CIEO-UniCIEO, Bogotá, Colombia.
Am J Orthod Dentofacial Orthop. 2022 Apr;161(4):510-518.e1. doi: 10.1016/j.ajodo.2020.09.038. Epub 2021 Dec 4.
The purpose of this study was to compare the thickness and length of the zygomatic process (ZP) of the maxilla, infrazygomatic crest area, and mandibular buccal shelf by sex and age.
Cone-beam computed tomography images of 128 subjects were divided into 3 groups: (1) 22 female and 19 male subjects aged 9-13 years, (2) 27 female and 20 male subjects aged 14-23 years, and (3) 20 female and 20 male subjects aged 24-50 years. A previously calibrated operator was used to take all measurements of the zygomatic process vertical bone thickness, zygomatic process horizontal bone length, zygomatic process/cementoenamel length (ZP/CEJL), infrazygomatic crest region bone thickness (IZCBT), infrazygomatic crest region bone length (IZCL), and mandibular buccal shelf bone thickness. Analysis of variance and Kruskal-Wallis tests were used for statistical analyses. Two-way analysis of variance was used for variables with significant differences by sex (P <0.002 as determined by Bonferroni correction for multiple comparisons).
Differences by sex were only found for IZCL in the maxillary second premolar and first molar (U5-U6) and the maxillary first molar (U6). Significant differences were observed among age groups for ZP/CEJL, IZCBT in U5-U6 and U6, and IZCL in U6-distal.
The results suggest that ZP/CEJL and IZCL are larger in adults than in younger subjects, whereas IZCBT is smaller in adults than in younger subjects.
本研究的目的是比较上颌骨颧突（ZP）、颧下嵴区域和下颌颊侧牙槽嵴的厚度和长度在性别和年龄上的差异。
128名受试者的锥形束计算机断层扫描图像被分为3组：（1）22名9至13岁的女性和19名男性受试者；（2）27名14至23岁的女性和20名男性受试者；（3）20名24至50岁的女性和20名男性受试者。由一名预先校准的操作人员对颧突垂直骨厚度、颧突水平骨长度、颧突/牙骨质釉质界长度（ZP/CEJL）、颧下嵴区域骨厚度（IZCBT）、颧下嵴区域骨长度（IZCL）和下颌颊侧牙槽嵴骨厚度进行所有测量。采用方差分析和Kruskal-Wallis检验进行统计分析。对于性别差异有统计学意义的变量（经Bonferroni多重比较校正后P<0.002），采用双向方差分析。
仅在上颌第二前磨牙和第一磨牙（U5-U6）以及上颌第一磨牙（U6）的IZCL方面发现了性别差异。在年龄组之间，ZP/CEJL、U5-U6和U6的IZCBT以及U6远中的IZCL存在显著差异。
结果表明，成人的ZP/CEJL和IZCL比年轻受试者更大，而成人的IZCBT比年轻受试者更小。
