Evaluation of the effects of diode laser application on experimental orthodontic tooth movements in rats. Histopathological analysis

PURPOSE: To evaluate the effect of diode laser use on experimental orthodontic tooth movements. METHODS: Thirty Rattus norvegicus albinus Wistar were divided into three equal groups (n = 10), two experimentals and one control. Applying 20 g orthodontic force were attached to the maxillary incisors of the rats in all groups. Low dose laser was applied to the surrounding tissues of the maxillary incisors of the rats in the experimental groups. Two exposure times for laser irradiation were used for seven days: t = 12 min (energy dose = 72 J) and t = 9 min (energy dose = 54 J) by a 0.1 W DEKA brand diode laser with wavelength of 980 nm. RESULTS: Osteoclastic activation increased in the 72 J group when compared to control group and decreased in comparison to the 54 J group. Osteoblastic activation was decreased in the 72 J group when compared to the control group and increased in comparison to the 54 J group. CONCLUSIONS: Applying 54 J laser energy has been found effective to accelerate the orthodontic tooth movement.

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