1. Department of Orthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
2. Student Research Committee, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
3. Polymer Division, Chemistry Department, School of Science, University of Tehran, Tehran, Iran
4. Dental and Periodontal Research Center, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
5. Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
6. Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran