Division of Orthodontics, Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Jeddah, Saudi Arabia.
Department of Orthodontics and Maxillofacial Orthopedics, King Abdulaziz University, Jeddah, Saudi Arabia.
Niger J Clin Pract. 2021 May;24(5):692-704. doi: 10.4103/njcp.njcp_240_20.
This cross-sectional observational retrospective study aimed at assessing the cephalometric skeleto-dental features of class I, II, and III skeletal relationships of Saudi female school children samples and comparing the results to the established North American Caucasian cephalometric standards.
The sample consisted of 205 retrospective lateral cephalometric radiographs of female school children. The age range of the subjects was between 10 and 13 years with a mean age of 11 ± 1 years. Several cephalometric and constructed points were identified. Angular, linear, and proportional measurements were obtained and analyzed. The skeleto-dental features of class II and class III were compared to class I of this sample then compared with the established North American Caucasian population. Different angular, linear, and proportional variables were investigated. Descriptive statistics and student t-test were used for data analysis.
The distribution of the skeletal relationship revealed that 68.3% of the sample showed class I relationship, 16.1% class II, and 15.6% class III. The result indicates significant differences between the different classes. A greater tendency towards class II facial pattern and more convex profile among Saudis were detected in the present study compared to Caucasians. Furthermore, The dentoalveolar relationship results showed more Bi-maxillary protrusion among Saudi females compared to the North American Caucasians.
The results obtained can be of great value in distinguishing the various skeleto-dental features in the different skeletal classes among the Saudi females and in the clinical diagnosis and treatment planning. Furthermore, the results of the study can also serve as a base-line for future investigations in Saudi Arabia.
本横断面观察性回顾性研究旨在评估沙特女学生样本的 I 类、II 类和 III 类骨骼关系的头影测量骨骼-牙齿特征，并将结果与既定的北美白种人头影测量标准进行比较。
该样本由 205 名女性在校儿童的回顾性侧位头颅侧位片组成。受试者的年龄范围在 10 至 13 岁之间，平均年龄为 11±1 岁。确定了几个头影测量和构建点。获得并分析了角度、线性和比例测量值。将 II 类和 III 类的骨骼-牙齿特征与该样本的 I 类进行比较，然后与既定的北美白种人群进行比较。研究了不同的角度、线性和比例变量。使用描述性统计和学生 t 检验进行数据分析。
骨骼关系的分布表明，68.3%的样本显示 I 类关系，16.1%的样本显示 II 类关系，15.6%的样本显示 III 类关系。结果表明不同类别之间存在显著差异。与白种人相比，本研究中沙特人存在更倾向于 II 类面型和更凸面型的趋势。此外，与北美白种人相比，沙特女性的牙颌关系结果显示出更大的双颌前突。
研究结果可用于区分沙特女性不同骨骼类别的各种骨骼-牙齿特征，有助于临床诊断和治疗计划。此外，该研究结果还可以为沙特阿拉伯未来的研究提供基线。
