National University of San Marcos, Faculty of dentistry, Department of Orthodontics, Lima, Peru.
San Martin de Porres University, Department of Radiology, Lima, Peru.
Int Orthod. 2021 Mar;19(1):67-75. doi: 10.1016/j.ortho.2020.12.002. Epub 2021 Jan 30.
To determine the ossification level of the midpalatal suture (MPS) in children, adolescents and adults from a Peruvian sample; according to the method proposed by Angelieri et al. with cone-beam computed tomographies (CBCTs).
The sample consisted of 315 CBCTs of 168 females and 147 males. The total sample was divided into 3 groups according to age and sex: children (n=77), adolescents (n=113) and adults (n=125). The images were mainly assessed in the axial plane using the Real Scan 2.0 software. The different periods of ossification of the MPS at the level of the vertical half of the palate was defined according to the five stages of Angieleri method (from A to E). The Student t-Test, Chi-square test, Kruskal-Wallis test and Spearman's Rho test were applied.
Chi test results showed that the stages of MPS ossification depended on the age of the patient by age ranges (P<0.005). Multiple comparison tests affirmed that male and female subjects in the children group had fewer ossification stages than the adolescent and adult groups (P<0.001). Meanwhile, there were no statistically significant differences between the two older age groups. Finally, there was a moderate positive correlation between the stages of ossification of the MPS and the age in the male group (Rho=0.511).
The onset of MPS ossification was significantly related to subjects up to 12 years of age and more frequently in stages B and C in both sexes. There was no difference in MPS ossification in adolescents and adult subjects.
通过锥形束计算机断层扫描（CBCT）确定秘鲁样本中儿童、青少年和成年人的正中骼缝（MPS）的骨化水平；根据 Angelieri 等人提出的方法。
样本由 168 名女性和 147 名男性的 315 个 CBCT 组成。根据年龄和性别，将总样本分为 3 组：儿童（n=77）、青少年（n=113）和成年人（n=125）。使用 Real Scan 2.0 软件主要在轴位评估图像。根据 Angieleri 方法的五个阶段（从 A 到 E），定义了 MPS 在硬腭垂直半平面的不同骨化时期。应用 Student t 检验、卡方检验、Kruskal-Wallis 检验和 Spearman's Rho 检验。
卡方检验结果表明，MPS 骨化阶段取决于患者的年龄范围（P<0.005）。多重比较检验证实，儿童组的男性和女性受试者的骨化阶段比青少年和成年组少（P<0.001）。同时，两个年龄较大的组之间没有统计学上的显著差异。最后，男性组 MPS 骨化阶段与年龄之间存在中度正相关（Rho=0.511）。
MPS 骨化的开始与 12 岁以下的受试者显著相关，且在两性中更常发生在 B 和 C 阶段。青少年和成年受试者的 MPS 骨化没有差异。
