Received: 21 October 2019
Accepted: 5 March 2020
First Online: 4 May 2020
Ethics approval and consent to participate
: Not applicable. Public accessible data was used for the study.
: Not applicable.
: The authors declare that Morenike Oluwatoyin Folayan and Maha El Tantawi are Sectional and Associate editors with BMC Oral Health, respectively.