About this article
Published Online: Jan 19, 2024
Page range: 83 - 93
DOI: https://doi.org/10.2478/aoj-1973-0002
© 1973 Nobuo Sakai, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Nobuo Sakai
Department of Orthodontics,
Nippon Dental College Tokyo
Japan