Ramachandran Nivedha, Venkatesan Keerthi, Kailasam Vignesh, Padmanabhan Sridevi
Department of Orthodontics and Dentofacial Orthopaedics, Sri Ramachandra Dental College and Hospital, SRIHER, Chennai, Tamil Nadu, 600116, India.
BMC Oral Health. 2025 May 28;25(1):836. doi: 10.1186/s12903-025-06210-z.
To determine and compare arch perimeter changes obtained with and between passive self-ligating bracket systems and conventional bracket systems.
A thorough search in six databases up to January 11th, 2025 was done with no restriction of date. Prospective and retrospective studies that evaluated the arch perimeter changes with and between passive self-ligating (PSL) and conventional brackets. Quality assessment was done using the ROB 2.0 and ROBINS-I tools. A standard random-effects model was used in this review for analysis.
Search identified twelve studies on arch perimeter changes with and between passive self-ligating (PSL) and conventional brackets. Eight studies were included in the quantitative analysis. Qualitative analysis indicated that arch perimeter increase was achieved with both conventional and passive self-ligating systems with no significant difference between the two. Meta-analysis indicates that there was an arch perimeter increase of 2.57 mm (0.29, 4.85) in the maxilla and 1.57 mm (-0.27, 3.41) in the mandible with passive self-ligation. However, when compared with the conventional system, the difference in arch perimeter gain was 0.09 mm (mean - 1.69, SD -1.88) in the maxillary arch and - 0.5 mm (-3.47, 2.43) in the mandibular arch. The difference was not significant.
Both conventional and self-ligation systems increased arch perimeter. However, the arch perimeter changes between the two bracket systems were not clinically or statistically significant. The hypothesis that self-ligating systems have a greater increase in arch perimeter is not based on evidence.
Not applicable.
确定并比较被动式自结扎托槽系统与传统托槽系统在牙弓周长变化方面的差异，以及两种被动式自结扎托槽系统之间的牙弓周长变化差异。
截至2025年1月11日，对六个数据库进行了全面检索，无日期限制。纳入评估被动式自结扎（PSL）托槽与传统托槽在牙弓周长变化方面的前瞻性和回顾性研究。使用ROB 2.0和ROBINS-I工具进行质量评估。本综述采用标准随机效应模型进行分析。
检索确定了12项关于被动式自结扎（PSL）托槽与传统托槽在牙弓周长变化方面的研究。八项研究纳入定量分析。定性分析表明，传统托槽系统和被动式自结扎系统均能使牙弓周长增加，两者之间无显著差异。荟萃分析表明，采用被动式自结扎时，上颌牙弓周长增加2.57mm（0.29，4.85），下颌牙弓周长增加1.57mm（-0.27，3.41）。然而，与传统系统相比，上颌牙弓周长增加量的差异为0.09mm（均值-1.69，标准差-1.88），下颌牙弓周长增加量的差异为-0.5mm（-3.47，2.43）。差异无统计学意义。
传统托槽系统和自结扎系统均能增加牙弓周长。然而，两种托槽系统之间的牙弓周长变化在临床和统计学上均无显著差异。自结扎系统能使牙弓周长有更大增加这一假设缺乏证据支持。
不适用。
