目的: 比较自锁托槽系统和传统托槽系统在下颌弓正畸治疗轻度至中度拥挤性牙𬌗不良后的稳定性。方法: 2021年3月至2024年3月期间,选择在本院接受正畸治疗的40名患者作为研究对象,按1∶1分配比随机分为两组：自锁托槽系统组（n=20）和传统托槽系统组（n=20）。分别在脱粘阶段（T1）,脱粘后1个月（T2）、3个月（T3）和6个月（T4）收集正畸研究模型,评估并比较两组下颌弓变量：不规则指数、尖牙间距、第一和第二前磨牙间宽度、磨牙间宽度和牙弓长度。结果: 在6个月的保留期内,传统托槽系统组和自锁托槽系统组的不规则指数显著增加。对于两种系统,从T1到T4的尖牙间距、第一前磨牙间宽度和磨牙间宽度的总体变化没有统计学意义。然而,在6个月的保留期内,第二前磨牙间宽度在两个系统中均显著下降,并且牙弓长度在传统托槽系统中显著降低。在传统托槽和自锁托槽系统的6个月保留期间,没有发现组间切牙不规则或牙弓尺寸的统计学显著差异。两个系统在6个月内尖牙间距、第一前磨牙间宽度、第二前磨牙间宽度、磨牙间宽度和牙弓长度的变化均小于1 mm。结论: 在6个月保留期间,使用自锁托槽系统和传统托槽系统在下颌弓正畸治疗轻度至中度拥挤性牙𬌗不良后的稳定性结果是相似的。
Abstract
Objective To compare stability outcomes after mandibular arch orthodontic treatment for mild to moderate crowding malocclusions between a self-ligating system and a conventional system. Methods From March 2021 to March 2024, 40 patients who received orthodontic treatment in our hospital were randomly divided into two groups according to 1∶1 allocation ratio: self-ligating system (n=20) or conventional system (n=20). Orthodontic study models were collected at the debonding stage (T1), 1 month (T2), 3 months (T3), and 6 months (T4) after debonding, and the mandibular arch variables assessed were as follows: index of irregularity, intercanine width, first and second interpremolar width, intermolar width and arch length. Results Incisor irregularity for both the conventional and self-ligating systems increased significantly during the 6-month retention period. For both systems, the overall changes in intercanine width, first interpremolar width, and intermolar width from T1 to T4 were not statistically significant. No statistically significant differences in incisor irregularity or arch dimensions were recorded during the 6-month retention period between the self-ligating and conventional systems. The changes in intercanine width, first interpremolar width, second interpremolar width, intermolar width, and arch length during the 6 months in both systems were less than 1 mm. Conclusion During the 6-month retention period, the stability of self-ligating system and conventional system after orthodontic treatment of mild to moderate crowded malocclusion with mandibular arch is similar.
关键词
自锁托槽 /
传统托槽 /
下颌弓 /
正畸 /
稳定性
Key words
self-ligating system /
conventional system /
mandibular arch /
orthodontics /
stability
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基金
河北省医学科学研究重点课题计划项目“口腔多学科联合治疗应用初探”（20211829）
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