Article History
Received: 12 June 2020
Accepted: 19 December 2020
First Online: 3 January 2021
Compliance with Ethical Statement
:
: Authors have declared that no competing interests exist.
: All authors hereby declare that all experiments have been examined and approved by the appropriate ethics committee of Khartoum Teaching Dental Hospital (the ethical committee of this institute does not have an approval numbering system). The patients were fully informed of the procedures and possible risks, and informed written consent was taken.
: Not applicable.