Received: 17 November 2020
Accepted: 13 March 2021
First Online: 25 March 2021
: The study was approved by the Research Ethics Committee of the Piracicaba Dental School, State University of Campinas (UNICAMP) (protocol number #027/2011) in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. Written consent was obtained from the guardians before starting the study. Written consent was also obtained from adolescents of legal age.
: Not applicable.
: The authors declare no conflict of interest.