West China Journal of Stomatology ›› 2022, Vol. 40 ›› Issue (3): 314-319.doi: 10.7518/hxkq.2022.03.011

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Evaluation of changes in orbital volume in adult female patients with maxillary transverse deficiency treated with a maxillary skeletal expander

Shi Xiaoyang(), Lin Xuefen, Ma Chi, Chen Muhan, Liu Dongxu.()   

  1. Dept. of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan 250012, China
  • Received:2021-08-30 Revised:2022-04-10 Online:2022-06-01 Published:2022-06-01
  • Contact: Liu Dongxu. E-mail:1140212323@qq.com;liudongxu@sdu.edu.cn
  • Supported by:
    The National Natural Science Foundation of China(81571010);Clinical Research Center of Shandong University(2020SDUCRCA005);Shandong University Postgraduate Education and Teaching Excellence Cultivation Program(ZY2019004);The Construction and Practice of Mixed Teaching Evaluation System of Orthodontics(qlyxjy-202009);The Reform of First-class Blended Curriculum in Orthodontics(2021Y157);Correspondence: Liu Dongxu, E-mail: liudongxu@sdu.edu.cn

Abstract: Objective

The effects of using a maxillary skeletal expander (MSE) on the orbital volume and width between periorbital bones in the treatment of adult female patients with maxillary transverse deficiency (MTD) were evalua⁃ted.

Methods

A total of 20 adult female patients with MTD with an average age of (22.60±6.29) years were included in the study. The patients were treated with MSE. Cone beam computed tomography was performed before expansion (T0) and no more than 3 weeks after expansion (T1). Orbital volume and periorbital bone width were measured with Mimics 21.0 and analyzed with SPSS 20.0. Paired t-test was performed, and a P value of <0.05 indicated significant difference.

Results

After expansion, the orbital volume increased by (346.80±275.31) mm3 (P<0.05). The width between the right and left zygomaticomaxillary sutures increased by (1.69±0.57) mm (P<0.05), and the width between the right and left infraorbital points increased by (1.71±0.70) mm (P<0.05). However, the width between the right and left frontozygomatic sutures increased by (0.15±0.32) mm (P>0.05). Finally, the width between the right and left supraorbital points increased by (0.23±0.52) mm (P>0.05).

Conclusion

The maxillary skeletal expander slightly expanded the orbital volume in the adult female patients and increased the lateral widths of the periorbital bones.

Key words: maxillary skeletal expander, maxillary transverse deficiency, adult female, orbital volume

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