Maxillary distraction osteogenesis in the adolescent cleft patient: Three-dimensional computed tomography analysis of linear and volumetric changes over five years

Philip Kuo Ting Chen, Yong Chen Por, Eric Jein Wein Liou, Frank Chun Shin Chang

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Objective: To assess the results of maxillary distraction osteogenesis with the Rigid External Distraction System using three-dimensional computed tomography scan volume-rendered images with respect to stability and facial growth at three time frames: preoperative (T0), 1-year postoperative (T1), and 5-years postoperative (T2). Design: Retrospective analysis. Setting: Tertiary. Patients: A total of 12 patients with severe cleft maxillary hypoplasia were treated between June 30, 1997, and July 15, 1998. The mean age at surgery was 11 years 1 month. Interventions: Le Fort I maxillary distraction osteogenesis. Distraction was started 2 to 5 days postsurgery at a rate of 1 mm per day. The consolidation period was 3 months. No face mask was used. A paired t test was used for statistical analysis. Main Outcome Measures: Overjet, ANB, and SNA and maxillary, pterygoid, and mandibular volumes. Results: From T0 to T1, there were statistically significant increments of overjet, ANB, and SNA and maxillary, pterygoid, and mandibular volumes. The T1 to T2 period demonstrated a reduction of overjet (30.07%) and ANB (54.42%). The maxilla showed a stable SNA and a small but statistically significant advancement of the ANS point. There was a significant increase in the mandibular volume. However, there was no significant change in the maxillary and pterygoid volumes. Conclusions: Maxillary distraction osteogenesis demonstrated linear and volumetric maxillary growth during the distraction phase without clinically significant continued growth thereafter. Overcorrection is required to take into account recurrence of midface retrusion over the long term.

Original languageEnglish
Pages (from-to)445-454
Number of pages10
JournalCleft Palate-Craniofacial Journal
Volume48
Issue number4
DOIs
Publication statusPublished - Jul 1 2011
Externally publishedYes

Keywords

  • 3D CT analysis
  • Cleft maxillary distraction
  • Relapse

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Oral Surgery

Fingerprint Dive into the research topics of 'Maxillary distraction osteogenesis in the adolescent cleft patient: Three-dimensional computed tomography analysis of linear and volumetric changes over five years'. Together they form a unique fingerprint.

Cite this