Acceleration of Canine Movement by Electrical Tooth Brush

Accelerating the rate of orthodontic tooth movement would be beneficial to the shortening of treatment time and to diminish adverse effects in orthodontic treatment. The acceleration of tooth movement should be achieved by new simple technique without risks and harmful procedure. Objectives: In this study, the effects of mechanical stimulation by vibration were evaluated on tooth movement and cytokine secretion. Methods: Ten subjects (2 males and 8 females, mean age 20.5 years) who received the upper first premolar extraction from both sides for canine distalization were participated. With the split mouth design, canine on the experimental site was applied with orthodontic force (60 g) in combination with the vibratory stimulation from the electrical toothbrush for 1 month compared to orthodontic force alone. The amount of canine movement was measured from the study model. The gingival crevicular fluid was collected from both mesial and distal region of each canine at each appointment. IL-1β level was analyzed by ELISA. Results: Tooth movement in the experimental group (1.20 mm/month) was significantly (p<.05) greater than in the control group (0.85 mm/month). Enhanced IL-1β secretion was observed in the distal site of the experimental group (0.177 pg/µl) after vibratory stimulation for 1 month which was significantly (p<.05) increased over the control group (0.071 pg/µl). Clinically, there were no pathological findings in either group. Conclusions: The application of vibration might accelerate orthodontic tooth movement via enhanced IL-1β secretion in the gingival crevicular fluid.