Funding for this research was provided by:
Academic Center for Dentistry Amsterdam
Text and Data Mining valid from 2019-11-13
Received: 27 March 2019
Accepted: 31 August 2019
First Online: 13 November 2019
Compliance with ethical guidelines
: C. Livas, T. Baumann, S. Flury and N. Pandis declare that they have no competing interests.
: The local ethics committee (Kantonale Ethikkommission, Bern, Switzerland; reference number: Req - 2016-00332) categorizes pooled teeth as an “irreversibly anonymized biobank” and thus, no previous ethical approval was needed.