Vertical segmental anterior mandibular distraction to aid closure of a severe anterior open bite associated with an accentuated reverse curve of Spee

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

Background:
The correction of severe anterior open bite is technically challenging, often requiring the use of complex orthodontic mechanics and/or orthognathic surgery and has a relatively high risk of relapse. A marked reverse curve of Spee in the lower arch presents additional challenges when correcting a severe anterior open bite.

Methods and Materials:
A 22.2 year-old Caucasian male presented with concerns relating to poor anterior occlusion associated with a 1.3 cm anterior open bite. There was an accentuated reverse curve of Spee to the lower arch, an increased maxillary-mandibular plane angle and increased lower face height. Multidisciplinary treatment involving the use of segmental anterior mandibular distraction to level the curve of Spee prior to undertaking a Le Fort I posterior maxillary impaction is described in this case report.

Results:
Long term post treatment records showed stable anterior open bite correction.

Conclusions:
This case report illustrates the successful use of segmental anterior mandibular vertical distraction followed by conventional Le Fort I posterior impaction surgery to correct a severe anterior open bite associated with an accentuated reverse curve of Spee and high maxillary-mandibular plane angle.
Original languageEnglish
JournalJournal of Orthodontics
Publication statusAccepted/In press - 15 Feb 2021

Keywords

  • Vertical segmental anterior mandibular distraction
  • Anterior open bite
  • Reverse curve of Spee

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