Janssens Yann, Foley Patrick F, Beyling Frauke, Schwestka-Polly Rainer, Schmid Jonas Q
Department of Orthodontics, Université Paris Cité, Paris, France.
Department of Orthodontics, Saint Louis University, St Louis, MO, USA.
Head Face Med. 2024 Apr 26;20(1):27. doi: 10.1186/s13005-024-00425-1.
The aim of the investigation was to evaluate if a Class II malocclusion in adult patients can be successfully corrected by maxillary total arch distalization with interradicular mini-screws in combination with completely customized lingual appliances (CCLA).
Two patient groups were matched for age and gender to determine differences in the quality of final treatment outcome. The treatment results of 40 adult patients with a Class I malocclusion (Group 1) were compared with those of 40 adult patients with a moderate to severe Class II malocclusion (Group 2). All patients had completed treatment with a CCLA (WIN, DW Lingual Systems, Bad Essen, Germany) without overcorrection in the individual treatment plan defined by a target set-up. To compare the treatment results of the two groups, 7 measurements using the American Board of Orthodontics Model Grading System (ABO MGS) and linear measurements for anterior-posterior (AP) and vertical dimensions were assessed at the start of lingual treatment (T1), after debonding (T2B), and compared to the individual target set-up (T2A).
A statistically significant AP correction (mean 4.5 mm, min/max 2.1/8.6, SD 1.09) was achieved in Group 2, representing 99% of the planned amount. The planned overbite correction was fully achieved in both the Class I and Class II groups. There was a statistically significant improvement in the ABO scores in both groups (Group 1: 39.4 to 17.7, Group 2: 55.8 to 17.1), with no significant difference between the two groups at T2B. 95% of the adult patients in Group 1 and 95% in Group 2 would meet the ABO standards after maxillary total arch distalization with a CCLA and interradicular mini-screws.
CCLAs in combination with interradicular mini-screws for maxillary total arch distalization can successfully correct moderate to severe Class II malocclusions in adult patients. The quality of the final occlusal outcome is high and the amount of the sagittal correction can be predicted by the individual target set-up.
本研究的目的是评估成年患者的安氏II类错牙合畸形能否通过使用根间微型螺钉结合完全定制的舌侧矫治器（CCLA）对上颌全牙弓进行远中移动而成功矫治。
将两个患者组按照年龄和性别进行匹配，以确定最终治疗效果质量的差异。将40例安氏I类错牙合畸形成年患者（第1组）的治疗结果与40例中度至重度安氏II类错牙合畸形成年患者（第2组）的治疗结果进行比较。所有患者均使用CCLA（WIN，DW Lingual Systems，德国巴德埃森）完成治疗，在由目标设定定义的个体治疗计划中未进行过度矫治。为比较两组的治疗结果，在舌侧治疗开始时（T1）、拆除矫治器后（T2B），使用美国正畸委员会模型分级系统（ABO MGS）进行7项测量，并对前后（AP）和垂直维度进行线性测量，并与个体目标设定（T2A）进行比较。
第2组实现了具有统计学意义的AP矫治（平均4.5毫米，最小/最大2.1/8.6，标准差1.09），占计划量的99%。安氏I类和II类组均完全实现了计划的覆牙合矫治。两组的ABO评分均有统计学意义的改善（第1组：39.4至17.7，第2组：55.8至17.1），在T2B时两组之间无显著差异。第1组95%的成年患者和第2组95%的成年患者在使用CCLA和根间微型螺钉进行上颌全牙弓远中移动后将符合ABO标准。
CCLA结合根间微型螺钉用于上颌全牙弓远中移动可成功矫治成年患者的中度至重度安氏II类错牙合畸形。最终咬合结果的质量很高，矢状向矫治量可通过个体目标设定进行预测。
