Correction to: BMC Oral Health (2021) 21:126 https://doi.org/10.1186/s12903-021-01500-8

After publication of the original article [1], the authors identified an error in Dr. Balgis Gaffar’s affiliations list.

The incorrect author’s affiliations list is:

11 Preventive Dental Sciences Department, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.

12 Research Center for Caries Prevention, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.

The correct author’s affiliations list is:

Preventive Dental Sciences Department, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.

The original article has been corrected.