Funding for this research was provided by:
Public Health Research Programme (12/3000/40)
Received: 12 September 2019
Accepted: 27 May 2020
First Online: 22 June 2020
Ethics approval and consent to participate
: The water fluoridation study has been reviewed and approved by NRES Committee East of England - Cambridge South (14/EE/0108) an amendment to carry out the RCT was approved by the research committee. All participants provide written informed consent prior to enrolling in the study for themselves (parent) and their child.
: Not applicable
: MG is an Associate Editor at BMC Oral Health.All other authors declare no competing interests.