About this article
Published Online: Jan 16, 2024
Page range: 154 - 157
Received: Jul 01, 1996
Accepted: Jul 01, 1996
DOI: https://doi.org/10.2478/aoj-1996-0014
© 1996 Lysle E. Johnston, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Lysle E. Johnston
Robert Browne Professor Dentistry and Chair, Department of Orthodontics and Pediatrie Dentistry,
University of MichiganU.S.A.