Alkhadra Thamer
Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia.
Saudi Dent J. 2017 Oct;29(4):140-143. doi: 10.1016/j.sdentj.2017.07.002. Epub 2017 Aug 2.
To evaluate if there is any difference in alveolar bone surface area in patients with high vertical facial dimension (long face), average vertical facial dimension (average face), and low vertical facial dimension (square short face).
Forty-five patients who had cone beam computed tomography (CBCT) as part of their orthodontic records were chosen according to their facial vertical dimension. Each group consisted of fifteen patients. Mandibular alveolar bone volume was calculated using Dolphin 3D Imaging software as the total surface area of the symphysis at the level of lower right canine to lower left canine and total surface areas for each patient was considered as total bone volume. Comparison was performed between groups using -test.
Long face type patients showed higher bone volume (total surface area 3220 ± 368 mm), average face patients have average bone volume (total surface area 2059 ± 620 mm) while square short face patients have the lowest total bone volume (total surface area 1877 ± 112 mm). There was a significant difference between long face and square short face groups (P < 0.005) however, there was no significant difference between long face and average face groups.
Patients with long face type have higher mandibular alveolar bone volume compared to short facial type patients.
评估高垂直面部比例（长脸）、平均垂直面部比例（平均脸）和低垂直面部比例（方形短脸）患者的牙槽骨表面积是否存在差异。
根据面部垂直比例，从45例正畸记录中有锥形束计算机断层扫描（CBCT）的患者中选取。每组15例患者。使用Dolphin 3D成像软件计算下颌牙槽骨体积，即右下尖牙至左下尖牙水平处联合部的总表面积，每位患者的总表面积视为总骨体积。使用t检验进行组间比较。
长脸型患者的骨体积较高（总表面积3220±368mm），平均脸患者的骨体积为中等（总表面积2059±620mm），而方形短脸患者的总骨体积最低（总表面积1877±112mm）。长脸组和方形短脸组之间存在显著差异（P<0.005），然而，长脸组和平均脸组之间没有显著差异。
与短脸型患者相比，长脸型患者的下颌牙槽骨体积更高。
