Article History
Received: 28 April 2020
Accepted: 23 August 2020
First Online: 31 August 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the College of Dentistry, University of Baghdad. A written informed consent was obtained from each patient to participate in this study. Regarding younger patients (under 18 years-old), a written consent was also obtained from their guardians.
: Not applicable.
: All authors (Firas A. Jamil, Huda Moutaz Asmael, Mohammed Yahya Al-Jarsha) state that there are no conflicts of interest.