Received: 31 May 2019
Accepted: 12 August 2019
First Online: 21 June 2021
: This study was reviewed by the Institutional Review Board (IRB) of Pusan National University Dental Hospital and was approved after thorough deliberation. IRB number: PNUDH-2019-002
: This manuscript does not contain any individual person’s identifier (including individual details, images, or videos).
: The authors declare that they have no competing interests.