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Effect of micro-pulsed electricity on experimental tooth movement
1Department of Orthodontics, Osaka Dental University.
Nihon Kyosei Shika Gakkai Zasshi = the Journal of Japan Orthodontic Society
|August 1, 1990
Summary
Micro-pulsed electrical stimulation accelerates orthodontic tooth movement by enhancing alveolar bone remodeling. This method shows increased bone deposition and osteoblast activity, leading to faster tooth repositioning.
Area of Science:
- Biomedical Engineering
- Orthodontics
- Regenerative Medicine
Background:
- Orthodontic tooth movement relies on alveolar bone remodeling.
- Current methods for enhancing bone remodeling and tooth movement have limitations.
Purpose of the Study:
- To investigate the effect of micro-pulsed electrical stimulation on alveolar bone remodeling.
- To determine if electrical stimulation can enhance orthodontic tooth movement.
Main Methods:
- Cats received orthodontic force and micro-pulsed electrical stimulation (1 Hz, 6V, ~10 microA) on maxillary canines.
- Tooth movement and new bone formation were measured over 1, 4, 7, and 14 days.
- Histochemical analysis identified cellular changes, including osteoblasts and TRACP-positive cells.
Main Results:
- Electrical stimulation significantly increased the rate of tooth movement.
- Wider areas and greater amounts of new bone were observed on the tension side with electrical stimulation.
- Increased osteoblast and tartrate-resistant acid phosphatase (TRACP)-positive cell activity were noted on tension and compression sides, respectively.
Conclusions:
- Micro-pulsed electrical stimulation effectively promotes alveolar bone remodeling.
- This stimulation enhances orthodontic tooth movement, suggesting a potential therapeutic application.