Text and Data Mining valid from 2019-10-21
Received: 27 March 2019
Accepted: 21 September 2019
First Online: 21 October 2019
Ethics approval and consent to participate
: All patients in the present retrospective study were selected from the archive of the Department of Dentistry and Maxillofacial Surgery of Ospedale Policlinico Maggiore, I.R.C.C.S., Milano, Italy. All procedures performed in this retrospective study involving human participants were in accordance with the ethical standards of the institutional and/or research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no competing interests.