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Torque expression in self-ligating orthodontic brackets and conventionally ligated brackets: A systematic review
Yousef Al-Thomali1, Roshan-Noor Mohamed2, Sakeenabi Basha3
1MDS, Dean, Faculty of Dentistry, Department of Orthodontics, Taif University, Taif, KSA.
Journal of Clinical and Experimental Dentistry
|February 3, 2017
Summary
This systematic review found that conventionally ligated orthodontic brackets exhibit greater torque expression than self-ligating (SL) brackets. Differences in torque expression between active and passive SL brackets were minor.
Area of Science:
- Orthodontics
- Biomaterials Science
- Dental Mechanics
Background:
- Self-ligating (SL) brackets are increasingly used in orthodontics.
- Understanding torque expression is crucial for effective orthodontic treatment.
- Comparison between SL and conventional brackets is essential.
Purpose of the Study:
- To evaluate and compare the torque expression of self-ligating (SL) orthodontic brackets and conventionally ligated brackets.
- To assess torque expression differences between active and passive SL brackets.
Main Methods:
- A systematic literature search was conducted across multiple databases (MEDLINE, EMBASE, CINAHL, PsychINFO, Scopus) and key journals.
- Studies were screened, and eligible research was assessed for methodological quality using the EPHPP Quality Assessment Tool.
- Nine studies met the inclusion criteria for the review.
Main Results:
- Three studies comparing SL and conventionally ligated brackets indicated higher torque expression in conventionally ligated brackets.
- One study reported greater torque expression in active SL brackets compared to passive SL brackets.
- Other studies found no significant differences in torque expression between active and passive SL brackets.
Conclusions:
- Conventionally ligated brackets generally demonstrate superior torque expression compared to SL brackets.
- Torque expression differences between active and passive SL brackets are minimal.
- Further research may be needed to fully elucidate torque expression in different bracket types.
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