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

<italic>Background:</italic> Mild Class III malocclusions can be treated by upper incisor proclination and lower incisor retroclination following extraction of the lower first premolars.
<italic>Aims:</italic> To compare the skeletal, dental and soft tissue changes in Class III patients treated with fixed appliances, Class III traction and lower first premolar extractions with the changes in a group of untreated Class III patients.
<italic>Methods:</italic> The Treatment group consisted of 30 Class III patients (Mean age 13.69 ± 1.48 years) who were treated by upper and lower fixed appliances, Class III intermaxillary traction and lower first premolar extractions for 2.88 ± 1.12 years. The Control group consisted of 20 untreated Class III patients (Mean age 13.51 ± 0.95) matched for age and gender. The T1 to T2 changes in the treated and untreated groups were compared using a paired <italic>t</italic>-test while differences between the two groups were compared with an independent <italic>t</italic>-test.
<italic>Results:</italic> During treatment, the upper incisors were proclined about 1 degree and the lower incisors were retroclined 8 degrees. Small, but statistically significant changes in SNB, Wits and the overlying soft tissues accompanied the changes in incisor inclination. At the end of treatment a positive overbite and overjet were achieved. The increase in lower facial height in the Treatment group was comparable with the change in the Control group.
<italic>Conclusions:</italic> A range of mild to moderate Class III malocclusions can be treated by dentoalveolar compensation.
</abstract>

Background: Mild Class III malocclusions can be treated by upper incisor proclination and lower incisor retroclination following extraction of the lower first premolars.
Aims: To compare the skeletal, dental and soft tissue changes in Class III patients treated with fixed appliances, Class III traction and lower first premolar extractions with the changes in a group of untreated Class III patients.
Methods: The Treatment group consisted of 30 Class III patients (Mean age 13.69 ± 1.48 years) who were treated by upper and lower fixed appliances, Class III intermaxillary traction and lower first premolar extractions for 2.88 ± 1.12 years. The Control group consisted of 20 untreated Class III patients (Mean age 13.51 ± 0.95) matched for age and gender. The T1 to T2 changes in the treated and untreated groups were compared using a paired t-test while differences between the two groups were compared with an independent t-test.
Results: During treatment, the upper incisors were proclined about 1 degree and the lower incisors were retroclined 8 degrees. Small, but statistically significant changes in SNB, Wits and the overlying soft tissues accompanied the changes in incisor inclination. At the end of treatment a positive overbite and overjet were achieved. The increase in lower facial height in the Treatment group was comparable with the change in the Control group.
Conclusions: A range of mild to moderate Class III malocclusions can be treated by dentoalveolar compensation.

Skeletal, dental and soft tissue changes in Class III patients treated with fixed appliances and lower premolar extractions

Preventive Dentistry Department, Faculty of Dentistry

Jordan University of Science and Technology

Australasian Orthodontic Journal

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

Background: Mild Class III malocclusions can be treated by upper incisor proclination and lower incisor retroclination following extraction of the lower first...

Skeletal, dental and soft tissue changes in Class III patients treated with fixed appliances and lower premolar extractions

Published Online: Aug 01, 2023

Page range: 40 - 45

Received: Dec 01, 2009

Accepted: Mar 01, 2011

DOI: https://doi.org/10.2478/aoj-2011-0008

© 2011 Elham S.J. Abu Alhaija et al., published by Sciendo

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