Short-term and long-term treatment outcomes with Class III activator
소속 상세정보
:Ryu Hyo-kyung
:Chong Hyun-Jeong/:An Ki-Yong/:Kang Kyung-Hwa
KMID : 0361920150450050226
Abstract
Objective: The purpose of this retrospective study was to investigate shortterm 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.
키워드
Class III activator; Skeletodental changes
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