School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
Department of Orthodontics, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
Biomed Res Int. 2021 Mar 22;2021:6646406. doi: 10.1155/2021/6646406. eCollection 2021.
Sella turcica bridging (STB) refers to a rare anatomical variation formed by the ossification of the ligament between the anterior and posterior clinoid processes. The presence of the STB was significantly correlated with craniofacial skeleton classification and a higher prevalence rate in skeletal Class III. The current study is aimed at investigating the dimensions of sella turcica and the prevalence of STB in different sexes and on the three craniofacial skeletal patterns using cone beam computed tomography (CBCT).
A total of 159 adults (66 males and 93 females), including 3 different craniofacial skeletal patterns (skeletal Classes I, II, and III), were included in the study. The sella turcica dimensions and the prevalence of STB were calculated. An independent -test and generalized linear model were used to compare the differences in the sella turcica dimensions and the skeletal relations. The Spearman rank correlation coefficient was used to analyze the correlations between sella turcica dimensions and skeletal relation.
The sella length (SL) was 11.05 ± 1.80 mm for males and 10.77 ± 1.56 mm for females. The anterior clinoid distance (ACD) which was measured for the anterior width of sella turcica showed 25.83 ± 2.04 mm and 24.04 ± 2.28 mm for males and females, respectively ( < 0.0001). The overall percentage of complete bridging and partial bridging was 6.6% and 56.9%, respectively. Complete bridges were more common in males (males: 9.1%, females: 4.8%), and partial bridges were more frequent in females (males: 49.2%, females: 62.4%). Both sexes differed with respect to sella turcica dimensions. Moreover, males had a significantly larger ACD, posterior clinoid distance (PCD), and diameter of sella turcica (DST), on both sides, relative to females.
The prevalence rate of complete STB in the Taiwanese population was 6.6%. Significant differences between sexes were found in sella turcica dimensions. The prevalence rates of STB as well as the sella turcica dimensions did not significantly differ between different craniofacial skeletal patterns (skeletal Classes I, II, and III).
鞍结节桥接（STB）是指由前、后床突间的韧带骨化形成的罕见解剖变异。STB 的存在与颅面骨骼分类显著相关，在骨骼 III 类中更为常见。本研究旨在使用锥形束 CT（CBCT）研究不同性别和三种颅面骨骼形态中鞍结节的大小和 STB 的发生率。
共纳入 159 名成年人（66 名男性和 93 名女性），包括 3 种不同的颅面骨骼形态（骨骼 I、II 和 III 类），计算鞍结节的大小和 STB 的发生率。采用独立样本 t 检验和广义线性模型比较鞍结节大小和骨骼关系的差异。采用 Spearman 秩相关系数分析鞍结节大小与骨骼关系的相关性。
男性的鞍结节长度（SL）为 11.05±1.80mm，女性为 10.77±1.56mm。鞍结节前宽测量的前床突距离（ACD）男性为 25.83±2.04mm，女性为 24.04±2.28mm（<0.0001）。完全桥接和部分桥接的总体百分比分别为 6.6%和 56.9%。完全桥接在男性中更为常见（男性：9.1%，女性：4.8%），而部分桥接在女性中更为常见（男性：49.2%，女性：62.4%）。两性在鞍结节大小方面存在差异。此外，男性双侧 ACD、后床突距离（PCD）和鞍结节直径（DST）均明显大于女性。
台湾人群完全 STB 的发生率为 6.6%。发现两性在鞍结节大小方面存在显著差异。STB 的发生率以及鞍结节的大小在不同的颅面骨骼形态（骨骼 I、II 和 III 类）之间无显著差异。
