Funding for this research was provided by:
Deutsche Gesellschaft für Prothetische Zahnmedizin und Biomaterialien
Oral Reconstruction Foundation (CF11602)
Text and Data Mining valid from 2019-01-21
Received: 24 March 2018
Accepted: 10 January 2019
First Online: 21 January 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.