Therapeutic efficacy of self-ligating brackets: A systematic review

Int Orthod. 2017 Sep;15(3):297-311. doi: 10.1016/j.ortho.2017.06.009. Epub 2017 Aug 1.


Introduction: Over the last few years, the use of self-ligating brackets in orthodontics has progressed considerably. These systems have been the subject of numerous studies with good levels of evidence making it possible to evaluate their efficacy and efficiency compared to conventional brackets. The aim of this study was to evaluate the therapeutic efficacy of self-ligating brackets by means of a systematic review of the scientific literature.

Materials and methods: A systematic study was undertaken in the form of a recent search of the electronic Pubmed database, oriented by the use of several keywords combined by Boolean operators relating to the therapeutic efficacy of self-ligating brackets through the study of tooth alignment, space closure, expansion, treatment duration and degree of discomfort. The search was limited to randomized controlled studies, and two independent readers identified studies corresponding to the selection criteria.

Results and discussion: The chosen articles comprised 20 randomized controlled trials. The studies analyzed revealed the absence of significant differences between the two types of system on the basis of the clinical criteria adopted, thereby refuting the hypothesis of the superiority of self-ligating brackets over conventional systems.

Keywords: Efficacy; Friction; Orthodontics; Self-ligating brackets; Systematic review.

Publication types

  • Review
  • Systematic Review

MeSH terms

  • Humans
  • Malocclusion / therapy*
  • Orthodontic Appliance Design*
  • Orthodontic Brackets*
  • Randomized Controlled Trials as Topic
  • Treatment Outcome