title: Post-treatment evaluation of a magnetic activator device in Class II high-angle malocclusions.
abstract: 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.
authors.affiliation: Department of Orthodontics, Gazi University, Ankara, Turkey.
authors.forename: Sema
authors.initials: S
authors.lastname: Yüksel
authors.forename: Emine
authors.initials: E
authors.lastname: Kaygisiz
authors.forename: Cağri
authors.initials: C
authors.lastname: Ulusoy
authors.forename: Alaattin
authors.initials: A
authors.lastname: Keykubat
mesh_terms: D000202:Activator Appliances; D000365:Age Determination by Skeleton; D002508:Cephalometry; D002648:Child; D002680:Chin / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008280:Magnetics / Q000295:instrumentation*; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D008334:Mandible / Q000473:pathology; D008437:Maxilla / Q000473:pathology; D008445:Maxillofacial Development / Q000502:physiology; D009295:Nasal Bone / Q000473:pathology; D016382:Orthodontic Appliance Design; D012658:Sella Turcica / Q000473:pathology; D019291:Skull Base / Q000473:pathology; D013997:Time Factors; D016896:Treatment Outcome; D014716:Vertical Dimension