Stability of treatment with self-ligating brackets and conventional brackets in adolescents: a long-term follow-up retrospective study

Head & Face Medicine

Zhenyu Ni¹  MinLing Zhen²  Yi Wang²  Chen Weiting²  Lin Jiaqiang²  Zhou Yu² 

[1] Department of Orthodontics, Hospital of Stomatology, Wenzhou Medical University, Wenzhou,113 west college road, 325000 Wenzhou, China;DDS, Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China

关键词: Stability;    Conventional brackets;    Self-ligating brackets;   

Others  :  1136073
DOI  :  10.1186/1746-160X-10-41

 received in 2014-05-05, accepted in 2014-09-16,  发布年份 2014

【 摘 要 】

Objectives

The aim of this study was to assess the long-term stability of treatment with self-ligating brackets compared with conventional brackets.

Materials and methods

The long-term follow-up retrospective study sample consisted of two groups of patients: group SL (including passive and interactive self ligating braces) comprised 30 subjects treated with self-ligating brackets at a mean pretreatment (T0) age of 13.56 years, with a mean follow up period for 7.24 years; group CL comprised 30 subjects treated with conventional brackets at a mean pretreatment age of 13.48 years, with a mean follow up period for 7.68 years. Relapse were evaluated by dental casts examination using the Peer Assessment Rating (PAR) index and the Little irregularity index. The two groups were evaluated for differences in the changing of PAR and Little irregularity index using paired-t tests. Inter-observer and intra-observer reliability was assessed by means of the Pearson’s correlation coefficients method.

Results

There were no significant differences changed in PAR and the Little irregularity index between groups for the long-term follow-up period.

Conclusions

The study revealed that brackets type did not affect the long-term stability. Considering self-ligating brackets were expensive, given comprehensive consideration for the patients to choose suitable orthodontic bracket type was of critical importance.

【 授权许可】

   
2014 Yu et al.; licensee BioMed Central Ltd.

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