Silveira Bruna T, Fernandes Karin S, Trivino Tarcila, Dos Santos Larissa Y F, de Freitas Claudio F
City of São Paulo University, UNICID, Rua Melo Peixoto. 1407, São Paulo, SP, Brazil.
Surg Radiol Anat. 2020 May;42(5):577-582. doi: 10.1007/s00276-019-02406-5. Epub 2020 Jan 4.
The main purpose of this study was to assess the measurements and shape of the sella turcica by using cone beam computed tomography (CBCT) and to associate the data to skeletal class II and class III patients, including correlations with gender, age and measurements of the anterior cranial base.
A trained examiner specialist in dental radiology selected and evaluated randomly 95 CBCT images of pre-orthognathic surgery patients, 60 (63.2%) being female and 35 (36.8%) male with age between 16 and 57 years. All images were evaluated to determine the size, shape and volume of the sella turcica. The anterior cranial base, represented by the S-N line (sella-nasion), was also measured.
Of these 95 patients, 48 (50.5%) had class III facial skeletal pattern, whereas 47 (49.5%) had class II. No statistically significant differences were found between class II and class III patients in the measurements and shape of the sella turcica (P > 0.05). The diameter and volume of the sella turcica had higher values in female patients, whereas the measurements of the anterior cranial base were higher in males (P < 0.05).
Therefore, one can conclude that measurements of the sella turcica are not reliable parameters to evaluate whether a class II or class III patient will or will not need orthognathic surgery.
本研究的主要目的是使用锥形束计算机断层扫描（CBCT）评估蝶鞍的测量值和形状，并将数据与骨骼II类和III类患者相关联，包括与性别、年龄和前颅底测量值的相关性。
一位经过培训的牙科放射学专家考官随机选择并评估了95例正颌手术前患者的CBCT图像，其中60例（63.2%）为女性，35例（36.8%）为男性，年龄在16至57岁之间。对所有图像进行评估，以确定蝶鞍的大小、形状和体积。还测量了以前颅底S-N线（蝶鞍-鼻根点）为代表的前颅底。
在这95例患者中，48例（50.5%）为III类面部骨骼型，而47例（49.5%）为II类。II类和III类患者在蝶鞍的测量值和形状方面未发现统计学上的显著差异（P>0.05）。女性患者蝶鞍的直径和体积值较高，而男性患者前颅底的测量值较高（P<0.05）。
因此，可以得出结论，蝶鞍的测量值不是评估II类或III类患者是否需要正颌手术的可靠参数。
