1. Department of Paediatric Dentistry; Faculty of Dentistry; Tabriz University of Medical Science; Tabriz East Azerbaijan Iran
2. Department of Endodontics; Faculty of Dentistry; Tabriz University of Medical Science; Tabriz East Azerbaijan Iran
3. Department of Oral Science; Faculty of Dentistry; Tabriz University of Medical Science; Tabriz East Azerbaijan Iran
4. Student Research Committee; Faculty of Dentistry; Tabriz University of Medical Science; Tabriz East Azerbaijan Iran
5. Dental and Periodontal Research Center; Tabriz University of Medical Science; Tabriz East Azerbaijan Iran