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Related Experiment Video

Updated: Apr 16, 2026

Force System with Vertical V-Bends: A 3D In Vitro Assessment of Elastic and Rigid Rectangular Archwires
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Supplemental vibrational force during orthodontic alignment: a randomized trial.

N R Woodhouse1, A T DiBiase2, N Johnson3

  • 1Department of Orthodontics, King's College London Dental Institute, London, UK Department of Orthodontics, Royal Alexandra Children's Hospital, Brighton and Sussex University Hospitals NHS Foundation Trust, Brighton, UK.

Journal of Dental Research
|March 12, 2015
PubMed
Summary
This summary is machine-generated.

Supplemental vibrational force did not significantly accelerate orthodontic tooth alignment in patients undergoing first premolar extraction with fixed appliances. Initial tooth irregularity was the primary factor influencing alignment speed, not vibrational device use.

Keywords:
AcceleDentcorrective orthodonticsorthodontic appliancesprospective investigationtooth movementvibration

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Area of Science:

  • Orthodontics
  • Biotechnology
  • Dental Mechanics

Background:

  • Orthodontic treatment aims to correct dental malocclusions.
  • Accelerating tooth movement is a key goal in orthodontic therapy.
  • Vibrational force devices are marketed to enhance orthodontic alignment speed.

Purpose of the Study:

  • To investigate the effect of supplemental vibrational force on the rate of orthodontic tooth alignment.
  • To compare tooth alignment rates between groups using vibrational devices, sham devices, and fixed appliances alone.

Main Methods:

  • Prospective, 3-arm parallel-group randomized clinical trial.
  • 81 subjects undergoing first premolar extraction with fixed appliances.
  • Groups: vibrational device (20 min/day), sham device, or fixed appliances only.
  • Mandibular study casts analyzed for irregularity index at baseline, initial, and final alignment.

Main Results:

  • No significant differences in mean irregularity index at initial alignment between groups.
  • Kaplan-Meier analysis showed no significant differences in alignment patterns among the three groups.
  • Initial tooth irregularity was the most significant factor influencing alignment rates (P = 0.1 × 10(-4)).

Conclusions:

  • Supplemental vibrational force did not significantly increase the rate of initial tooth movement.
  • Vibrational force did not reduce the time required for final orthodontic alignment.
  • The study found no evidence supporting the efficacy of supplemental vibrational force in accelerating orthodontic alignment with fixed appliances.