Funding for this research was provided by:
Vice-Chancellor for Research, Shiraz University of Medical Sciences (1398.087)
Article History
Received: 9 February 2021
Accepted: 24 June 2021
First Online: 21 July 2021
Declarations
:
: Human Ethics Review Committee of the Faculty of Dentistry, University of Medical Sciences, Shiraz, Iran (#IR.Sums.Dental.REC.1398.087). The images were taken for various purposes other than the present study and written informed consent had been obtained from all the patients at the time of exposure for the possible use of their anonymous information in future researches.
: The authors transfer to the publisher the non-exclusive publication rights
: The authors declare no competing interests.