Article History
Received: 16 August 2020
Accepted: 16 February 2021
First Online: 22 February 2021
Declarations
:
: This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Ethics Committee of Faculty of Dentistry, Alexandria University, Egypt (IRB NO 00010556-IORG 0008839), on 20<sup>th</sup> July 2019.
: Informed consent was obtained from all individual participants included in the study.
: The authors declare no competing interests.