Department of Orthodontics, School of Dentistry, University of Wonkwang, Wonkwang Dental Research Institute, Iksan, South Korea.
Postgraduate Orthodontic Program, Arizona School of Dentistry & Oral Health, A.T. Still University, Mesa, Ariz, Graduate School of Dentistry, Kyung Hee University, Seoul, South Korea.
Am J Orthod Dentofacial Orthop. 2022 Feb;161(2):e187-e197. doi: 10.1016/j.ajodo.2021.01.023. Epub 2021 Dec 3.
This study aimed to investigate the short-term effects on the circummaxillary sutures induced by microimplant-assisted rapid palatal expansion (MARPE) in skeletally mature patients.
Cone-beam computed tomography (CBCT) images of preexpansion (T0) and postexpansion (T1) of 23 patients (mean age, 20.9 ± 3.65 years) treated with MARPE were evaluated. The T0 and T1 CBCT images were reoriented and superimposed on the basis of the anterior cranial base, using OnDemand3D software (Cybermed, Seoul, Korea). Then, width changes of 9 circummaxillary sutures (frontonasal, frontomaxillary, frontozygomatic, nasomaxillary, zygomaticomaxillary, intermaxillary, midpalatal, zygomaticotemporal, and pterygopalatine sutures) were measured on 1 section of each patient's T0 and T1 CBCT images. In addition, correlation coefficients between changes in the midpalatal sutures, the amount of appliance activation, age, and the changes in other circummaxillary sutural widths were also calculated.
Statistically significant (P <0.05) width increases were found in all 9 circummaxillary sutures. The changes in midpalatal suture at the maxillary central incisor level positively correlated with the intermaxillary sutures at the anterior nasal spine level, midpalatal sutures at the posterior nasal spine level, and frontomaxillary sutures (P <0.05). In addition, the changes in the midpalatal sutures at the posterior nasal spine level also positively correlated with the changes in the intermaxillary sutures at the anterior nasal spine level, frontomaxillary sutures, and medial pterygopalatine sutures (P <0.05).
All 9 circummaxillary sutural widths increased in skeletally mature patients immediately after MARPE. The greatest increases in width were measured in the midpalatal sutures and the intermaxillary sutures, followed by the frontomaxillary sutures.
本研究旨在探讨微型种植体辅助快速腭扩张（MARPE）对骨骼成熟患者的眶周缝短期影响。
对 23 名接受 MARPE 治疗的患者（平均年龄 20.9±3.65 岁）的扩展前（T0）和扩展后（T1）的锥形束 CT（CBCT）图像进行评估。使用 OnDemand3D 软件（韩国首尔 Cybermed），根据前颅底重新定向和叠加 T0 和 T1 的 CBCT 图像。然后，在每个患者的 T0 和 T1 CBCT 图像的 1 个切片上测量 9 个眶周缝（额鼻缝、额上颌缝、额颧缝、鼻上颌缝、颧上颌缝、颌间缝、中腭缝、颧颞缝和翼腭缝）的宽度变化。此外，还计算了中腭缝变化、矫治器激活量、年龄与其他眶周缝宽度变化之间的相关系数。
所有 9 个眶周缝的宽度均有统计学意义（P<0.05）的增加。上颌中切牙水平的中腭缝变化与前鼻棘水平的颌间缝、后鼻棘水平的中腭缝和额上颌缝呈正相关（P<0.05）。此外，后鼻棘水平的中腭缝变化也与前鼻棘水平的颌间缝、额上颌缝和内侧翼腭缝的变化呈正相关（P<0.05）。
MARPE 后，骨骼成熟患者的 9 个眶周缝宽度均立即增加。中腭缝和颌间缝的增宽最大，其次是额上颌缝。
