1. Department of Endodontic and Operative Dentistry, Faculty of Dentistry, Damascus University, Damascus 0100, Syria
2. Department of Endodontic and Operative Dentistry, Faculty of Dentistry, International University for Science and Technology, Damascus 0100, Syria
3. Department of Periodontology, Faculty of Dentistry, Al Wadi International Private University, Homs 77, Syria
4. Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, Strasbourg University, 67000 Strasbourg, France
5. Department of Endodontics and Conservative Dentistry, Faculty of Dental Medicine, Strasbourg University, 67000 Strasbourg, France