Natural Sciences, Stomotology, 2026
ISSN: 1829-006X
COMPARATIVE EVALUATION OF LOW LEVEL LASER AND INJECTABLE PLATELET RICH FIBRIN ON THE RATE OF CANINE RETRACTION.
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Submitted: 2026-04-08
© 2026 by author(s) and The Gufo Inc.
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(CC BY-NC 4.0).
Abstract
Objective: To compare the effect of LLLT and I-PRF on the rate of maxillary canine retraction following first
premolar extraction.
Methods: A clinical study was conducted on 28 female patients divided into two equal groups. In Group 1 (n=14),
LLLT was applied to the right maxillary canine, while the left served as a control. In Group 2 (n=14), I-PRF was
injected around the right maxillary canine, with the left side as control. Canine retraction was measured monthly over
four months using casts that were fabricated and then scanned with a 3D scanner
Results: Group 1, the LLL side (right), showed a statistically significant higher rate of canine retraction than the
control side (left); group 2, I-PRF, showed a statistically significant higher rate of canine retraction over the control
side (left). LLLT resulted in a significantly higher rate of movement over the four-month observation period.
Conclusion: In both groups the experimental side showed accelerated canine movement compared to the control
side, the LLL yielded higher rate of canine movement when compared to I-PRF.