Article History
Received: 28 May 2023
Accepted: 3 November 2023
First Online: 11 December 2023
Declarations
:
: The study was approved by the research ethics committee of the Faculty of Oral and Dental Medicine at Cairo University.Number of approval: 11 7 2015.Date of approval: 27\7\2015.An informed written consent was obtained from all students.
: Not applicable.
: The authors declare that they have no competing interests.