Effect of power arm on anterior tooth movement in sliding mechanics analyzed using a three-dimensional digital model

Conclusion Anterior tooth movement during retraction varied with the anatomical parameters of individual patients, even if the same power arm length was employed. The present findings suggest that the height level of the power arm relative to CRe is the most influential factor determining the tooth movement, while the power arm length itself has less impact on subsequent tooth movement. Therefore, it is recommended that an optimal power arm length be calculated back from the location of CRe at the beginning of treatment and treatment progress be monitored using 3D model analysis.

Source: Orthodontic Waves - July 11, 2015 Category: Dentistry Source Type: research