Arwa Qawas, Ghassan Alturki, Fahad Alsulaimani, Tarek El-Bialy, Patil Shankargouda, Hosam Baeshen
Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia.
Division of Orthodontics, Department of Dentistry and Dental Hygiene, School of Dentistry, University of Alberta, Edmonton, Canada.
Sci Rep. 2025 Jul 11;15(1):25145. doi: 10.1038/s41598-025-09157-x.
Lateral cephalograms have the inherent drawback of superimposition of bilateral structures, while landmarks are more reproducible on CBCT scans. Yet no studies in the literature have utilized 3D imaging to investigate the effects of clear aligners on anterior open bite. Therefore, The aim is to measure the skeletal and dental changes that contribute to anterior open bite closure with clear aligner therapy on CBCT scans. It is a single-arm retrospective study that included 40 cases of anterior open bite who were treated using Invisalign. Pre- and post-treatment CBCT scans were traced to record 13 dental and 3 skeletal measurements. A paired t-test was conducted to compare the mean values of pre- and post-treatment measurements. Combined intrusion of the maxillary right and left molars was statistically significant, meanwhile mandibular molars maintained their vertical position. Maxillary incisors were extruded and retroclined significantly, whereas mandibular incisors were only extruded. While anterior facial height was decreased insignificantly, both lower anterior facial height and mandibular plane angle showed a significant decrease. Clear aligner (Invisalign) therapy is effective in the management of anterior open bite through vertical control, maxillary molars intrusion, maxillary incisors extrusion, maxillary and mandibular incisors retroclination, and mandibular autorotation.
头颅侧位片存在双侧结构重叠的固有缺点，而在锥形束计算机断层扫描（CBCT）上标志点更具可重复性。然而，文献中尚无研究利用三维成像来探究透明矫治器对前牙开（牙合）的影响。因此，本研究旨在通过CBCT扫描测量透明矫治器治疗导致前牙开（牙合）关闭的骨骼和牙齿变化。这是一项单臂回顾性研究，纳入了40例使用隐适美治疗的前牙开（牙合）病例。对治疗前和治疗后的CBCT扫描进行描记，以记录13项牙齿测量指标和3项骨骼测量指标。采用配对t检验比较治疗前和治疗后测量值的均值。上颌左右磨牙的联合压低具有统计学意义，而下颌磨牙保持其垂直位置。上颌切牙显著伸长并舌倾，而下颌切牙仅伸长。虽然前面高降低不显著，但下前面高和下颌平面角均显著减小。透明矫治器（隐适美）治疗通过垂直控制、上颌磨牙压低、上颌切牙伸长、上颌和下颌切牙舌倾以及下颌自动旋转，在前牙开（牙合）的治疗中是有效的。
