305 Iran J Vet Med., Vol 12, No 4 (Autumn 2018), Iranian Journal of Veterinary Medicine Original Article. DOI: 10.22059/ijvm.2018.264603.1004918 Computed Tomographic Evaluation of Tooth Growth in Response to Diode Laser Irradiation in Rabbits Moloud Davoodi 1 , Amir Rostami 1 , Azin Tavakoli 2 , Sarang Soroori 3 , Alireza Bahonar 4 , Arash Rahimi 5 1 Department of Internal Medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran 2 Department of Clinical Sciences, Faculty of Veterinary Medicine, Islamic Azad University, Garmsar Branch, Garmsar, Iran 3 Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran 4 Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran 5 Department of Biophysics, Islamic Azad University Science and Research Branch, Tehran, Iran _________________________________________________________________________________________ Abstract: BACKGROUND: While many dental procedures induce pulpal damage by increase the temperature, this study was established to evaluate the thermally effect of different laser methods on pulp, oral soft and hard tissues. OBJECTIVES: In this study, laser irradiation applied to measure how increased in power output can infuence on dental pulp by using CT images. METHODS: Ten adult New Zealand white rabbits were divided into 2 groups receiving 3 and 5 watt for 15 second respectively on left side cheek teeth after shortening of third upper and frst lower premolars. Right cheek teeth trimmed as well and served as control. CT scans were taken immediately after lasing and repeated every week for one month. RESULTS: The statistical analysis of dental measurements shows that teeth length of right and left third upper premolar was signifcantly different during time (P<0.012). While in frst lower premolar there was no signifcant differences between right and left sides (P=0.338). In every week CT, group one showed no differences in right and left side in comparison to group two (P>0.05). Only third upper premolar in fourth week showed a signifcant difference between two groups (P=0.047). CONCLUSIONS: laser radiation could infuence on tooth growth in both groups. This study revealed that the higher laser power would have been more effective on reduction of growth rate of teeth. In ad- dition, 3D CT scans could be an appropriate tools for dental growth investigation. Keywords: CT images, Dental growth, Laser irradiation, Rabbit, Thermal damage Copyright © 2018, Iranian Journal of Veterinary Medicine. This is an open-access article distributed under the terms of the Creative Commons Attribution- noncommercial 4.0 International License which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited. _________________________________________________________________________________________ Correspondence Rostami Amir, Department of Internal Medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Tel: +98(21) 66418500, Fax: +98(21) 66498711, Email: arostami@ut.ac.ir Received: 8 August 2018 Accepted: 22 September 2018 How to Cite This Article Davoodi, M., Rostami, A., Tavakoli, A., Soroori, S., Bahonar, A., Rahimi, A. (2018). Computed Tomographic Evaluation of Tooth Growth in Response to Diode Laser Irradiation in Rabbits. Iran J Vet Med, 12(4), 305-312. doi: 10.22059/ijvm.2018.264603.1004918 305-312