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Efficacy of pulsed electromagnetic field in reducing treatment time: A clinical investigation

  • Wasundhara Ashok Bhad (Patil)
    Correspondence
    Address correspondence to: Wasundhara Ashok Bhad (Patil), Department of Orthodontics and Dentofacial Orthopaedics, Government Dental College and Hospital, Nagpur 440003, Maharashtra, India.
    Affiliations
    Department of Orthodontics and Dentofacial Orthopaedics, Government Dental College and Hospital, Nagpur, Maharashtra, India
    Search for articles by this author
  • Anchal Ashok Karemore
    Affiliations
    Department of Orthodontics and Dentofacial Orthopaedics, Government Dental College and Hospital, Nagpur, Maharashtra, India
    Search for articles by this author
Published:January 15, 2022DOI:https://doi.org/10.1016/j.ajodo.2020.12.025

      Highlights

      • Overview and comparison of methods to accelerate orthodontic tooth movement.
      • Pulsed electromagnetic field (PEMF), a device assisted method that can be used for accelerating orthodontic tooth movement, has been reviewed in detail.
      • Application of a removable appliance for orthodontic acceleration.

      Introduction

      The long duration of orthodontic treatment is a major concern for the patient. This study aimed to evaluate the efficacy of pulsed electromagnetic field therapy (PEMF) in accelerating the orthodontic tooth movement, thus reducing treatment duration.

      Methods

      Nineteen patients requiring extraction of first premolars were selected for this study. The study design was randomly assigned (sealed envelope randomization) split-mouth design. The rate of individual canine retraction by a nickel-titanium closed-coil spring was done. The experimental side received a PEMF generated by a circuit powered by a watch battery. The circuit was embedded in a removable appliance. Foil was used to obstruct the control side from PEMF exposure. Patients were instructed to wear the appliance for 8-10 hours. Appliance with the device was given from the commencement of canine retraction until the canine retraction of one side was complete. Tooth movement was measured on progress models.

      Results

      An average increase of 31% in the rate of tooth movement was observed with the PEMF.

      Conclusions

      PEMF is a good option to reduce orthodontic treatment duration.
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