Pamukçu Hande, Tunçer Nilüfer İrem, Pelin İsmail Can, Zengin Hatice Yağmur
Department of Orthodontics, Başkent University, Faculty of Dentistry, Ankara, Turkey.
Department of Anatomy, Başkent University, School of Medicine, Ankara, Turkey.
Turk J Orthod. 2022 Sep;35(3):198-206. doi: 10.5152/TurkJOrthod.2022.21083.
The aims of this study were to investigate cephalometric mandibular dimensions in growing Anatolian Turkish children and to identify the periods of rapid growth for boys and girls. Furthermore, the secondary aim was to compare obtained values with published standards in the literature.
A total of 528 pretreatment lateral cephalometric radiographs, grouped according to age and sex, were analyzed. Effective mandibular length, ramus height, and corpus lengths were comparatively evaluated within age groups for boys and girls and between sexes for the same age group. Data acquired from this study were compared with American, Canadian, Chinese, and European norms. Growth curves for mandible were constructed for each sex group.
Effective mandibular length was almost always significantly longer in boys, except for 9- and 12-year-age groups. Effective mandibular length in girls increased significantly between ages 8 and 10, 10 and 12, and 11 and 13 years, while in boys between ages 8 and 10, 9 and 11, and 13 and 15 years. Turkish girls had significantly shorter effective mandibular lengths than American girls at age 14. No significant difference was found between Turkish and Chinese girls and boys. Turkish girls and boys had significantly shorter corpus lengths from their Norwegian counterparts at age 12.
Except for 9- and 12-year-age groups, effective mandibular length was almost always significantly longer in boys compared to the girls. It is suggested to use norm values from more recently conducted studies and which are representative of the studied population. Growth curves can be used to predict the approximate mandibular dimensions at a particular age.
本研究旨在调查生长中的安纳托利亚土耳其儿童的头影测量下颌尺寸，并确定男孩和女孩的快速生长时期。此外，次要目的是将获得的值与文献中公布的标准进行比较。
共分析了528张根据年龄和性别分组的治疗前侧位头影测量X线片。对男孩和女孩在各年龄组内以及同一年龄组的不同性别之间的有效下颌长度、升支高度和体部长度进行了比较评估。将本研究获得的数据与美国、加拿大、中国和欧洲的标准进行比较。为每个性别组构建了下颌骨的生长曲线。
除9岁和12岁年龄组外，男孩的有效下颌长度几乎总是显著长于女孩。女孩的有效下颌长度在8至10岁、10至12岁和11至13岁之间显著增加，而男孩在8至10岁、9至11岁和13至15岁之间显著增加。14岁时，土耳其女孩的有效下颌长度明显短于美国女孩。土耳其女孩和男孩与中国女孩和男孩之间未发现显著差异。12岁时，土耳其女孩和男孩的体部长度明显短于挪威同龄人。
除9岁和12岁年龄组外，男孩的有效下颌长度几乎总是显著长于女孩。建议使用最近进行的、代表所研究人群的研究中的标准值。生长曲线可用于预测特定年龄时的下颌大致尺寸。
