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Effect of Low Intensity Pulsed Ultrasound (LIPUS) on Tooth Movement and Root Resorption: A Prospective Multi-Center
Tarek El-Bialy1, Khaled Farouk2,3, Terry D Carlyle4
1Division of Orthodontics, Katz Group Centre for Pharmacy and Health Research, School of Dentistry, University of Alberta, Edmonton, AB T6G 1C9, Canada.
Journal of Clinical Medicine
|March 20, 2020
Summary
Low intensity pulsed ultrasound (LIPUS) significantly accelerates orthodontic tooth movement by 29% and simultaneously reduces root resorption. This innovative approach enhances treatment efficiency while preserving root length during orthodontic therapy.
Area of Science:
- Orthodontics
- Biomedical Engineering
- Dental Research
Background:
- Orthodontic treatment aims to move teeth efficiently while minimizing side effects like root resorption.
- Low Intensity Pulsed Ultrasound (LIPUS) is a non-invasive therapeutic modality with potential biological effects.
Purpose of the Study:
- To investigate the efficacy of LIPUS in accelerating orthodontic tooth movement.
- To evaluate the impact of LIPUS on reducing orthodontically induced external root resorption.
Main Methods:
- A split-mouth study design was employed with 21 patients receiving LIPUS on one side and serving as their own control.
- A negative control group of 10 patients without LIPUS was also included.
- Low intensity pulsed ultrasound (LIPUS) was applied using specific parameters (1.5 MHz, 1 kHz, 30 mW/cm²).
- Cone-beam computed tomography (CBCT) was used for measurements; tooth movement and root lengths were assessed.
Main Results:
- LIPUS application resulted in a statistically significant increase in the rate of tooth movement (0.266 mm/week vs. 0.232 mm/week), an average acceleration of 29%.
- LIPUS significantly decreased external root resorption (0.0092 mm/week vs. 0.0223 mm/week) compared to the control side.
- The findings indicate a dual benefit of LIPUS in orthodontic treatment.
Conclusions:
- LIPUS effectively accelerates orthodontic tooth movement.
- LIPUS demonstrates a significant potential to minimize external root resorption during orthodontic treatment.
- This modality offers a promising adjunctive therapy for improving orthodontic treatment outcomes.
