Correction of a skeletal Class III malocclusion during a pubertal growth spurt by bone-anchored maxillary protraction

Masahiro Konno, Masahiro Iijima, Moe Nagasaka-Konno, Itaru Mizoguchi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Background Although protracted facemask therapy is effective for young children, treatment should begin as early as possible to produce maximum forward movement of the maxilla. Methods This case report describes a successful bone-anchored maxillary protraction therapy for the correction of a skeletal Class III malocclusion during a pubertal growth spurt. A 2-year posttreatment stability assessment was also performed. Result Post-treatment records revealed that the SNA angle improved by maxillary advancement from 80.5° to 86.0°. The mandibular and maxillary incisors were not inclined, and the mandibular plane angle remained the same as before therapy. The patient's facial profile improved due to the forward movement of the maxilla, and the anterior crossbite was resolved. Two years after treatment, the patient maintained good facial aesthetics and skeletal stability, although the SNB angle increased from 84.5° to 85.5° due to mandibular growth. Conclusion This case report suggests that bone-anchored maxillary protraction therapy is adequate for the correction of severe skeletal Class III malocclusion that occurs during pubertal growth spurts.

Original languageEnglish
Pages (from-to)62-68
Number of pages7
JournalJournal of the World Federation of Orthodontists
Volume6
Issue number2
DOIs
Publication statusPublished - 2017 Jun 1
Externally publishedYes

Keywords

  • Bone-anchored maxillary protraction
  • Class III malocclusion
  • Orthodontic treatment
  • Pubertal spurt

ASJC Scopus subject areas

  • Orthodontics

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