1. Aim: To evaluate the effects of low–level laser therapy on rate of tooth movement between laser irradiated and non irradiated maxillary first premolars during the study period. 2. Materials and Methods: This study was designed to test the efficacy of GaAlAs laser irradiation on 10 patients. Apically directed force of 25 grams was delivered by using cantilever springs. Laser irradiation was applied on the mucosa at 6 points around the first premolar on the experimental side. Laser irradiation was started on the day ‘0’ after inserting intrusion spring, and was repeated on 7th, 14th and 21st day. To permit measurements of intrusion on dental casts, dental impressions were taken at 2 time points immediately prior to application of intrusion force and on 28th day. Tooth movements were recorded on the cast using digital Vernier calipers at the end of four weeks. The collected observational data was subjected to statistical analysis. 3. Results: The mean orthodontic tooth movement (OTM) was 0.985 ± 366 mm on the laser irradiated side and 1.041 ± 0.315 mm on the control side with no statistically significant difference between them (p = 0.528). Therefore, GaAlAs laser irradiation did not lead to significantly stimulated intrusion type of OTM. 4. Conclusion: Under the limitations of the present study, it can be concluded that GaAlAs irradiation together with apically directed forces led to no change in the amount of tooth movement on experimental side compared to control side.