1. Department of Biomedical Applications Institute of Laser for Postgraduate Studies University of Baghdad Baghdad Iraq
2. Department of Dentistry Al‐Hadi University College Baghdad Iraq
3. Department of Periodontics University of Sulaimani Sulaymaniyah Iraq
4. Department of Periodontology, Operative and Preventive Dentistry Dental Faculty University of Bonn Bonn Germany
5. Center of Applied Medical Laser Research and Biomedical Optics (AMLaReBO) University of Bonn Bonn Germany