1. Department of Oral Surgery and Implantology School of Dentistry (Carolinum) Johann Wolfgang Goethe‐University Frankfurt am Main Frankfurt am Main Germany
2. Dentsply Implants Mannheim Germany
3. Institute Medical Biometrics and Clinical Epidemiology Charité Berlin Germany
4. Department of Prosthodontics School of Dentistry (Carolinum) Johann Wolfgang Goethe‐University Frankfurt am Main Frankfurt am Main Germany
5. Aarau, Switzerland