Funding for this research was provided by:
Major Research Plan (81991503)
Shaanxi Key Scientific and Technological Innovation Team
Received: 15 August 2020
Revised: 17 October 2020
Accepted: 26 November 2020
First Online: 7 February 2021
: The authors declare no competing interests.
: This study was approved by the Ethics Committee and Institutional Review Board, School of Stomatology, FMMU (date of approval: December 22, 2017; approval number: IRB-REV-2017034).