Correction of late adolescent skeletal Class III using the Alt-RAMEC protocol and skeletal anchorage

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Korean Journal of Orthodontics, vol.53, no.1, pp.54-64, 2023 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 53 Issue: 1
  • Publication Date: 2023
  • Doi Number: 10.4041/kjod21.337
  • Journal Name: Korean Journal of Orthodontics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.54-64
  • Keywords: Face mask, Class III treatment, Miniplate, Alt-RAMEC, ASSISTED MAXILLARY PROTRACTION, EXPANSION
  • Süleyman Demirel University Affiliated: Yes


© 2023 The Korean Association of Orthodontists.This case report describes skeletal anchorage-supported maxillary protraction performed with the Alternate Rapid Maxillary Expansion and Constriction (Alt-RAMEC) protocol over a treatment duration of 14 months in a 16-year-old female patient who was in the late growth-development period. Miniplates were applied to the patient's aperture piriformis area to apply force from the protraction appliance. After 9 weeks of following the Alt-RAMEC protocol, miniplates were used to transfer a unilateral 500-g protraction force to a Petit-type face mask. A significant improvement was observed in the soft tissue profile in measurements made both cephalometrically and in three dimensional photographs. Subsequently, the second phase of fixed orthodontic treatment was started and the treatment was completed with the retention phase. Following treatment completion, occlusion, smile esthetics, and soft tissue profile improved significantly in response to orthopedic and orthodontic treatment.