Short-term and long-term treatment outcomes with Class III activator.
10.4041/kjod.2015.45.5.226
- Author:
Hyo Kyung RYU
1
;
Hyun Jeong CHONG
;
Ki Yong AN
;
Kyung Hwa KANG
Author Information
1. Department of Orthodontics, College of Dentistry, Wonkwang Dental Research Institute, Wonkwang University, Iksan, Korea. pigtail@wku.ac.kr
- Publication Type:Original Article
- Keywords:
Class III activator;
Skeletodental changes
- MeSH:
Follow-Up Studies;
Humans;
Incisor;
Retrospective Studies
- From:The Korean Journal of Orthodontics
2015;45(5):226-235
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: The purpose of this retrospective study was to investigate short-term and long-term skeletodental outcomes of Class III activator treatment. METHODS: A Class III activator treatment group (AG) comprised of 22 patients (9 boys, 13 girls) was compared with a Class III control group (CG) comprised of 17 patients (6 boys, 11 girls). The total treatment period was divided into three stages; the initial stage (T1), the post-activator treatment or post-mandibular growth peak stage (T2), and the long-term follow-up stage (T3). Cephalometric changes were evaluated statistically via the Mann-Whitney U-test and the Friedman test. RESULTS: The AG exhibited significant increases in the SNA angle, ANB angle, Wits appraisal, A point-N perpendicular, Convexity of A point, and proclination of the maxillary incisors, from T1 to T2. In the long-term follow-up (T1-T3), the AG exhibited significantly greater increases in the ANB angle, Wits appraisal, and Convexity of A point than the CG. CONCLUSIONS: Favorable skeletal outcomes induced during the Class III activator treatment period were generally maintained until the long-term follow-up period of the post-mandibular growth peak stage.
