Document Type : Original articles
Authors
1 Department of clinical sciences, college of dentistry, Ibnsina university of medical and pharmaceutical sciences
2 department of pedodontics, orthodontics and prevention, college of dentistry, ibn sina university of medical and pharmaceutical sciences, Baghdad, Iraq.
3 Department of pedodontics, orthodontics and prevention/ college of dentistry/ ibnsina university of medical and pharmaceutial sciences, Baghdad, Iraq.
4 Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakakah, Saudi Arabia.
5 medical biotechnology\medical biotechnology department, College of Biotechnology, Al – Qasim Green University, Babylon Province5103, Iraq.
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