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Erschienen in:
04.05.2023 | Original Article
Correlation of low-intensity laser irradiation and rate of orthodontic tooth movement — a prospective clinical study
Erschienen in: Lasers in Dental Science | Ausgabe 3/2023
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Purpose
The long treatment duration and painful teeth are among the major concerns of patients undergoing fixed orthodontic therapy. Photobiomodulation therapy can promote wound healing, bring about faster bone remodelling, and reduce pain during tooth movement. The study was done to determine the effect of Photobiomodulation therapy on the rate of tooth movement during canine retraction.
Methods
Ten patients (7 females, 3 males) with bilateral extraction of maxillary first premolars were included in the study. A gallium – arsenide (GaAs) diode laser of 980-nm wavelength was applied on days 0, 7, 15, 30, 45, 60, 75, and 90 when the retraction of the maxillary canine on the right side (laser group) was initiated. Laser application was done in the following manner; five doses from buccal and five doses from palatal sides (two cervical, two middle, and one apical). The laser irradiation was delivered with an energy density of 6 J/cm2 and power density of 1 W/cm2 in a continuous noncontact wave mode. Space closure measurements were taken using a digital caliper, and an unpaired t-test and an ANOVA test were used to compare the differences between the experimental and control sides.
Results
The rate of orthodontic tooth movement was greater and statistically highly significant (p = 0.000) on the experimental side. Anchorage loss was significantly greater in the control group than the photobiomodulation group (p = 0.000).
Conclusion
Photobiostimulation carried out using a 980-nm diode laser is capable of increasing the rate of orthodontic tooth movement during extraction space closure in humans.