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Updated: May 19, 2026

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Archwire vibration and stick-slip behavior at the bracket-archwire interface.

Julie E Olson1, Ying Liu, Jeffrey C Nickel

  • 1School of Dentistry, University of Missouri-Kansas City, USA.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|August 28, 2012
PubMed
Summary
This summary is machine-generated.

Intraoral vibrations significantly impact orthodontic bracket-archwire friction. Higher vibration amplitudes reduce stick-slip behavior, regardless of ligation method, improving treatment efficiency.

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Area of Science:

  • Biomedical Engineering
  • Orthodontics
  • Tribology

Background:

  • The effect of intraoral vibrations on orthodontic bracket-archwire friction remains uninvestigated.
  • Understanding this interaction is crucial for optimizing orthodontic treatment mechanics.

Purpose of the Study:

  • To evaluate how intraoral vibrations influence the stick-slip behavior at the bracket-archwire interface.
  • To compare the effects of active and passive ligation methods under vibratory conditions.

Main Methods:

  • In-vivo intraoral vibrations were measured using accelerometers on orthodontic wires during mastication.
  • Vibration frequencies and amplitudes were replicated in a bench-top friction testing apparatus.
  • Stick-slip friction was measured for active and passive ligation methods across various vibration scenarios.

Main Results:

  • Orthodontic wire vibrations during carrot biting exhibited a mean frequency of 98 Hz and a mean amplitude of 151 mV.
  • Higher vibration amplitudes (150 mV and 190 mV) significantly reduced bracket-archwire friction compared to low amplitudes (110 mV).
  • No significant difference in friction was observed between active and passive ligation methods.

Conclusions:

  • The amplitude of intraoral archwire vibrations demonstrably affects stick-slip behavior at the bracket-archwire interface.
  • Vibration amplitude, rather than ligation method, is a key factor influencing friction in this context.