Text and Data Mining valid from 2016-10-24
Received: 27 August 2015
Accepted: 12 April 2016
First Online: 24 October 2016
Compliance with ethical guidelines
: A.K. Bräscher, R.E. Feldmann, Jr., and J. Benrath declare that they have no competing interests. D. Zuran is clinical speaker for Invisalign®, including giving seminars and certifications for the Invisalign® technique.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. Informed consent was obtained from all individual participants included in the study.