Document is current

Article History

Received: 30 January 2023

Accepted: 14 June 2023

First Online: 5 July 2023

Declarations

:

: The authors declare that they have no competing interests.

: This study was performed in compliance with the principles of the Declaration of Helsinki (as revised in 2013). The cadavers used in the present study were donated to Tokyo Medical University and Nippon Dental University, Tokyo, Japan, based on the Act on Body Donation for Medical and Dental Education. This study was approved by the Ethics Review Committee of Nippon Dental University (2018/21/July; No. NDU-T2015-20) and Tokyo Medical University, Institutional Review Board (2019/01/March; TMU, No. T2018-0060).

: All the donors willingly signed a consent form for body donation for education and research, and all the donors could revoke their intended donations at any time without any disadvantages. The collection and use of the CBCT data of all the cadavers was carried out with the permission of the donors and their families and then performed according to the Law Concerning Cadaver Dissection and Preservation enacted in Japan in 1949.

: The present study was conducted within the parameters of the written permission we received from the body donors during their lifetime.

: All the authors have read and agreed to the published version of the manuscript.