Department of Orthodontics, Faculty of Dentistry, Cairo University, Giza, Egypt.
Department of Radiology, Faculty of Dentistry, Cairo University, Giza, Egypt.
BMC Oral Health. 2023 May 17;23(1):301. doi: 10.1186/s12903-023-02988-y.
The sella turcica (ST) is a crucial landmark in orthodontics. It is utilized as a reliable predictor of future growth of the skeletal pattern, assisting in early diagnosis and promoting better treatment planning options. The goal of this research was to compare the morphology and bridging of the sella turcica in transverse maxillary deficient malocclusions and malocclusions with normal transverse relationships.
A total of 52 cone beam computed tomographic (CBCT) images were selected with an age range of 18-30 years. Group I comprised 26 patients previously diagnosed with transverse maxillary deficiency, while group II comprised 26 patients with normal transverse skeletal relationships. The length, depth and diameter of the ST were measured by two observers, the shape was evaluated as round, oval or flat and sellar bridging was calculated in each case. An Independent t-test was used to compare between the sellar dimensions in both groups. For assessment of bridging percentage Chi square test was used.
The mean values of the length, depth and diameter of the sella in group I was 11.09 mm, 8.56 and 12.81 mm respectively and 10.34 mm, 8.24 and 12.38 mm in group II respectively (P ≤ 0.05). No significant differences were found between both groups in any of the sellar dimensions. The rounded ST shape was the most prevalent among both groups (59.6%). Partial ST bridging was found in only 7.7% of group I (p < 0.0001*). Complete ST bridging wasn't detected in either of the groups.
There was no correlation found between transverse maxillary deficiency and the morphology and bridging of the sella turcica.
鞍区是正畸学中的一个重要标志。它可作为预测骨骼模式未来生长的可靠指标，有助于早期诊断，并提供更好的治疗计划选择。本研究旨在比较横向上颌骨不足的错颌畸形和横向关系正常的错颌畸形患者的鞍区形态和桥连情况。
共选择 52 例锥形束 CT（CBCT）图像，年龄范围为 18-30 岁。I 组包括 26 例经诊断为横向上颌骨不足的患者，II 组包括 26 例横向骨骼关系正常的患者。由两位观察者测量鞍区的长度、深度和直径，评估鞍区的形状为圆形、椭圆形或扁平形，并计算每个病例的鞍区桥连情况。使用独立 t 检验比较两组之间的鞍区尺寸。使用卡方检验评估桥连百分比。
I 组的鞍区长度、深度和直径的平均值分别为 11.09mm、8.56mm 和 12.81mm，II 组分别为 10.34mm、8.24mm 和 12.38mm（P≤0.05）。两组之间的鞍区尺寸均无显著差异。两组中最常见的鞍区形状为圆形（59.6%）。仅在 I 组中发现 7.7%的部分鞍区桥连（p<0.0001*），两组均未发现完全鞍区桥连。
横向上颌骨不足与鞍区的形态和桥连之间无相关性。
