Table 3. The Outcomes of the Included Studies .

Study ID	Outcomes
Guram et al19	LLLT can reduce the fixed orthodontic tooth movement duration.
Dalaie et al20	There was no significant difference in terms of tooth movement between the irradiated and non-irradiated sides at any time point (P >0.05).
Kansal et al21	There was no statistically significant difference in the rate of tooth movement during canine retraction between the laser group and the control group.
Qamruddin et al22	Low-level laser irradiation can accelerate orthodontic tooth. Movement and the Canine retraction was significantly greater on the experimental side compared with the placebo side.
Varella et al23	LLLT-facilitated orthodontics is approximately 2 times faster than conventional orthodontics.
Üretürk et al24	Low-level laser application significantly accelerates tooth movement in humans and could shorten the whole treatment duration.
Sousa et al25	A statistically significant increase in the movement speed of irradiated canines. This might reduce orthodontic treatment time.
AlSayed Hasan et al11	LLLT, used with the described parameters, is an effective method for accelerating orthodontic tooth movement in dental crowding cases.
Genc et al26	The application of a low-level laser could significantly accelerate orthodontic movement in humans.
Youssef et al27	LLLT can accelerate movement during orthodontic treatment.
Heravi et al28	LLLT did not accelerate orthodontic tooth movement