Funding for this research was provided by:
Vice-Chancellor for Research, Shiraz University of Medical Sciences (98-01-03-20816)
Received: 23 July 2020
Accepted: 8 November 2020
First Online: 12 November 2020
Ethics approval and consent to participate
: This study design was approved by the Ethics in Human Research Committee of Shiraz University of Medical Sciences (Ethics ID no. IR.SUMS.DENTAL.REC. 1398.138). All human teeth used for this study collected from the Oral and Maxillofacial Surgery Department of Shiraz dental school. These patients informed that their tooth will be used for research purposes and all of the patients or their parents signed a written consent form before the extraction of teeth.
: Not applicable.
: The authors of this article have no financial and non-financial competing interests.