Skeletal Class II treatment with Twin Force Bite Corrector: case reports.


World journal of orthodontics, vol.9, no.3, 2008 (Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 9 Issue: 3
  • Publication Date: 2008
  • Journal Name: World journal of orthodontics
  • Journal Indexes: Scopus
  • Ankara University Affiliated: Yes


To analyze the effectiveness of the Twin Force Bite Corrector in 2 patients requiring anterior advancement of the mandible. To correct the imbalanced maxillomandibular relationship, a Twin Force Bite Corrector was inserted in 2 female adolescents (case 1: 12 years 3 months of age; case 2: 12 years 7 months of age) presenting with a skeletal Class II malocclusion. The pretreatment, posttreatment, and follow-up dental and skeletal parameters were evaluated on lateral cephalometric radiographs. Twenty-two reference points were marked and 23 variables measured for each set of lateral cephalograms. The Twin Force Bite Corrector therapy lasted for 3 months in both patients. The total orthodontic treatment duration was 1 year 4 months for case 1 and 1 year 6 months for case 2. In both patients, the overjet reduced, the mandibles advanced, and a Class I molar relationship was achieved. Effective mandibular length (Co-Gn) increased significantly, while the mandibular incisors almost kept their initial positions without a significant change in inclination (L1/ML). The clinical profiles of both girls remarkably improved. The Twin Force Bite Corrector was effective in the correction of skeletal Class II malocclusion with retrognathic mandible, with negligible anchorage loss in the mandibular arch. COPYRIGHT © 2007 BY QUINTESSENCE PUBLISHING CO, INC.