<abstract xmlns="http://www.w3.org/1999/xhtml">

Many experiments have investigated the force requirements for tooth movement; the diverse results so obtained have lead to controversy and resulted in an incomplete understanding of the true nature of tooth movement. This study analyses the results of two experiments4,5 which investigated the relation between the force applied and the rate of tooth movement from the standpoint of the pressures exerted by the tooth root on the surrounding tooth-periodontal membrane complex. The pressure hypothesis suggested by Smith and Storey1 is tested using the estimated projected area of the teeth moved in the experiments as a means of calculating the estimated pressures resulting from the application of orthodontic forces. The average pressure at which optimal rates of tooth movement occured in these experiments was 19 7 gf cm−2.
</abstract>

Many experiments have investigated the force requirements for tooth movement; the diverse results so obtained have lead to controversy and resulted in an incomplete understanding of the true nature of tooth movement. This study analyses the results of two experiments4,5 which investigated the relation between the force applied and the rate of tooth movement from the standpoint of the pressures exerted by the tooth root on the surrounding tooth-periodontal membrane complex. The pressure hypothesis suggested by Smith and Storey1 is tested using the estimated projected area of the teeth moved in the experiments as a means of calculating the estimated pressures resulting from the application of orthodontic forces. The average pressure at which optimal rates of tooth movement occured in these experiments was 19 7 gf cm−2.

The Force Requirements for Tooth Movement Part III: The Pressures Hypothesis Tested

Australasian Orthodontic Journal

This work is licensed under the Creative Commons Attribution 4.0 International License.

Many experiments have investigated the force requirements for tooth movement; the diverse results so obtained have lead to controversy and resulted in an...

The Force Requirements for Tooth Movement Part III: The Pressures Hypothesis Tested

Published Online: Jan 13, 2024

Page range: 93 - 97

Received: Aug 01, 1995

Accepted: Dec 01, 1995

DOI: https://doi.org/10.2478/aoj-1996-0004

© 1996 Brian.W. Lee, published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.