Received: 3 November 2020
Accepted: 11 February 2021
First Online: 22 March 2021
Ethics approval and consent to participate
: The study was approved by The North Denmark Region Committee on Health Research Ethics (Approval No: N-20180027). Patients were recruited by public invitation through Facebook or admitted to the Department of Oral and Maxillofacial Surgery, Aalborg University Hospital, Denmark, for implant placement in the posterior part of the maxilla.
: Not applicable.
: Thomas Starch-Jensen and Niels Henrik Bruun declare no financial interest or conflict of interest, either directly or indirectly, in the products or information listed in the article.