1. Dentist, Implaneo Dental Clinic, Private Institute of Periodontology and Implantology; Munich Germany
2. Department of Restorative Dentistry; Charité-Medical University Berlin; Germany
3. Oral and Maxillofacial Surgeon; Department of Oral and Maxillofacial Surgery; Medical Faculty; University Hospital of Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU); Erlangen Germany