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A Mouse Distraction Osteogenesis Model
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Comprehensive Long-Term Outcomes Following Mandibular Distraction Osteogenesis.

Mychajlo S Kosyk1, Lauren K Salinero1, Carrie Z Morales1

  • 1Division of Plastic and Reconstructive Surgery, The Children's Hospital of Philadelphia, Philadelphia, USA.

The Cleft Palate-Craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association
|October 18, 2023
PubMed
Summary
This summary is machine-generated.

Mandibular distraction osteogenesis (MDO) yields excellent long-term respiratory, feeding, and scar results, especially in nonsyndromic patients. Syndromic patients benefit but face higher risks of dental and nerve issues.

Keywords:
distraction osteogenesismandibular micrognathianerve injuriesscarringtooth abnormalities

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Area of Science:

  • Craniofacial surgery
  • Pediatric orthognathic surgery
  • Maxillofacial reconstruction

Background:

  • Mandibular hypoplasia often requires surgical intervention for functional and aesthetic improvement.
  • Mandibular distraction osteogenesis (MDO) is a key technique for correcting severe mandibular deficiencies.
  • Long-term outcomes in diverse pediatric populations are crucial for treatment planning.

Purpose of the Study:

  • To evaluate the long-term functional and aesthetic outcomes of MDO in a varied group of pediatric patients.
  • To identify specific complications and success rates related to MDO in syndromic versus nonsyndromic children.

Main Methods:

  • A cross-sectional study was conducted at a single tertiary-care pediatric center.
  • Forty-eight patients with a minimum 4-year follow-up after MDO were assessed.
  • Outcomes included respiratory status, feeding, dental development, nerve function, TMJ function, and scarring.

Main Results:

  • Nonsyndromic patients (20) showed excellent respiratory and feeding outcomes without need for airway support or tube feeding.
  • Syndromic patients (26) demonstrated respiratory and feeding improvements but had higher rates of CPAP use and tube feeding.
  • Dental damage, particularly molar abnormalities, was more frequent in syndromic patients and those undergoing MDO before age two. Nerve function was largely preserved, with severe impairment in only 6% of syndromic patients. Scarring was minimal, and TMJ dysfunction was rare.

Conclusions:

  • MDO provides significant long-term benefits for respiratory and feeding issues in both syndromic and nonsyndromic pediatric patients.
  • While nonsyndromic patients experience predominantly favorable outcomes, syndromic patients require careful monitoring for dental and nerve complications.
  • MDO is a safe and effective procedure for mandibular advancement in children, with generally good long-term results and manageable complications.