1. Experimental Surgery and Regenerative Medicine (ExperiMed), Ludwig-Maximilians-University, Munich, Germany.
2. Department of Oral and Maxillofacial Surgery, Ludwig-Maximilians-University, Munich, Germany.
3. Department of Oral and Maxillofacial Surgery, Alexandria University, Alexandria, Egypt.
4. Department of Conservative Dentistry and Periodontology, Ludwig-Maximilians-University, Munich, Germany.