Funding for this research was provided by:
Folktandvården Östergötland (ref: 4-14-15, Ref 4-14-15, 4-14-15)
Received: 24 April 2019
Accepted: 3 December 2019
First Online: 16 December 2019
Ethics approval and consent to participate
: The Regional Ethical Review Board in Linköping (Dnr: 2013/315–31) and the Swedish Medical Products Agency and The European Union Drug Regulating Authorities Clinical Trials Database (EudraCT201300530531) approved (Date of registration: February 10th, 2014). The study was monitored by Forum Östergötland, Linköping, Sweden. The patient and the legal guardians - if the patient was under the age of 18 years - received verbal and written information about the study and were encouraged to ask questions about it. If they decided to participate in the trial, they had to bring a signed consent form to the first treatment session. If the age of the patient was below 18 years, the consent form also had to be signed by the legal guardians.
: Not applicable.
: The authors declare that they have no competing interests.