Journal Article

Post-treatment evaluation of a magnetic activator device in Class II high-angle malocclusions

Sema Yüksel, Emine Kaygisiz, Çağrı Ulusoy and Alaattin Keykubat

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 32, issue 4, pages 425-429
Published in print August 2010 | ISSN: 0141-5387
Published online January 2010 | e-ISSN: 1460-2210 | DOI:
Post-treatment evaluation of a magnetic activator device in Class II high-angle malocclusions

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The purpose of this study was to evaluate changes in dentofacial growth before, during, and after use of a magnetic activator device (MAD) II in high-angle Class II division 1 patients.

Lateral cephalometric and hand–wrist radiographs of 10 patients (six girls and four boys) with an average chronological age of 10 years 5 months were obtained at the beginning of the observation period (T1, 9.5 months), beginning of MAD II application (T2), at the end of the treatment (T3), and approximately 4 years after the end of treatment (T4). Thirteen linear, 1 ratio, and 10 angular measurements were evaluated. Paired t-tests were used for statistical evaluation of differences that occurred between the time points.

The increase in gonial angle, GnGoAr angle, S–N, Co–Gn, Go–Ar, ANS–Me, S–Go, and N–Me distances and the decrease of overjet, U1–NA distance, and ANB angle were statistically significant during the treatment. At T4, there was a decrease in gonial angle and U1–NA distance, which was significant. The changes as a result of treatment were stable at T4.

Journal Article.  2954 words.  Illustrated.

Subjects: Restorative Dentistry and Orthodontics

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