Forces released during sliding mechanics with passive self-ligating brackets or nonconventional elastomeric ligatures

Am J Orthod Dentofacial Orthop. 2008 Jan;133(1):87-90. doi: 10.1016/j.ajodo.2007.08.011.


Introduction: The aim of this study was to evaluate the frictional forces generated by 4 types of passive stainless steel self-ligating brackets (SLBs) and by nonconventional elastomeric ligatures (NCEL) and conventional elastomeric ligatures (CEL) during sliding mechanics.

Methods: An experimental model consisting of 5 aligned stainless steel 0.022-in brackets was used to assess frictional forces produced by the SLBs, NCEL, and CEL with a 0.019 x 0.025-in stainless steel wire.

Results: Significantly smaller static and kinetic forces were generated by the SLBs and NCEL (<2 g) compared with the CEL (>500 g). No significant differences were found within the different types of SLBs, or between these and the NCEL.

Conclusions: SLBs and NCEL are valid alternatives for low friction during sliding mechanics.

Publication types

  • Comparative Study

MeSH terms

  • Analysis of Variance
  • Dental Alloys
  • Dental Stress Analysis*
  • Elastomers
  • Friction
  • Orthodontic Appliance Design*
  • Orthodontic Brackets*
  • Orthodontic Wires
  • Stainless Steel


  • Dental Alloys
  • Elastomers
  • Stainless Steel