Hu Jieqiong, Wang Chunhong, Li Qingyi
Department of Orthodontics, The Affiliated Stomatological Hospital Of Nanjing Medical University, PR China; State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, PR China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, PR China.
Department of Orthodontics, The Affiliated Stomatological Hospital Of Nanjing Medical University, PR China; State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, PR China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, PR China.
J Stomatol Oral Maxillofac Surg. 2025 Sep;126(4S):102310. doi: 10.1016/j.jormas.2025.102310. Epub 2025 Mar 7.
This study aimed to investigate the hard tissue and soft tissue characteristics related to favorable facial attractiveness outcomes of Class II Twin-block treatment to select suitable patients for this therapy.
A total of 86 skeletal Class II patients who had undergone Twin-block treatment were included in this study. Post-treatment facial attractiveness was assessed by seven orthodontists using visual analog scale (VAS) scores based on 3D photographs. Patients were ranked according to their VAS scores, with the top 26 individuals classified as the favorable group and the bottom 26 as the unfavorable group. Soft tissue and hard tissue measurements were obtained from their 3D photos and lateral cephalograms, and intergroup comparisons were conducted using the independent t-test and Mann-Whitney test.
The favorable group exhibited significantly lower values for Co-pog, FH-MP, L1-APog, Li-H Line, and Total Convexity Angle before treatment, according to independent t-tests and Mann-Whitney tests. Conversely, the favorable group demonstrated significantly higher values for the Wits appraisal, Pog-NB, S-Go/N-Me, Si-H and Ch_R-Li-Ch_L were larger(P < 0.05).
Patients with low divergent skeletal patterns, a well-developed chin, upright lower incisors, a flat lower lip, and a large amount of skeletal discrepancy between the maxillary and the mandibular are likelier to achieve favorable facial attractiveness outcomes following Twin-block treatment.
本研究旨在调查与II类双期阻断矫治良好面部美观效果相关的硬组织和软组织特征，以便为该治疗选择合适的患者。
本研究纳入了86例接受双期阻断矫治的骨性II类患者。由7名正畸医生根据三维照片，使用视觉模拟量表（VAS）评分对治疗后的面部美观进行评估。根据VAS评分对患者进行排名，前26名被归为良好组，后26名被归为不良组。从他们的三维照片和头颅侧位片中获取软组织和硬组织测量值，并使用独立t检验和曼-惠特尼检验进行组间比较。
根据独立t检验和曼-惠特尼检验，良好组在治疗前的Co-pog、FH-MP、L1-APog、Li-H线和总凸度角的值显著较低。相反，良好组的Wits值、Pog-NB、S-Go/N-Me、Si-H和Ch_R-Li-Ch_L显著较高（P<0.05）。
骨骼型差异小、下巴发育良好、下切牙直立、下唇平坦以及上下颌骨之间存在大量骨骼差异的患者，在接受双期阻断矫治后更有可能获得良好的面部美观效果。
