Document Type : Original Paper
1 Medical Physics, postgraduate student (PhD) of Higher Institute for Laser Research and Applications, Damascus University, Damascus, Syria.
2 Prof. Dr. Nabil Kochaji DDS, MSc, PhD, Oral Pathologist Dean of Faculty of Dentistry, Al-Sham University. Department of Oral Pathology, Damascus University
3 2- Biomedical Photonics laboratory, Higher Institute for Laser Research and Applications- Damascus University-Syria