HIGHLIGHTS
- who: Mukhtar from the In total, primary school children aged, years were selected from (1100) students at ten primary schools in AL-Khalis city/ Diyala, IraqAfter getting the approval from the Scientific Committee of the Pedodontics and Preventive Dentistry Department, College of Dentistry/ University of Baghdad, this cross sectional study was carried out during the period from the end of December , until the end of February, . To conduct this study without obstacles, official permission was obtained from the General Directorate of Education of Diyala Governorate. Aims of this study were explained to the school authority to obtain . . .
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