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Related Experiment Videos

Segmental mandibular reconstruction by distraction osteogenesis under skin flaps

T Oda1, Y Sawaki, K Fukuta

  • 1Department of Oral Surgery, Nagoya University School of Medicine, Japan.

International Journal of Oral and Maxillofacial Surgery
|March 20, 1998
PubMed
Summary

Distraction osteogenesis can bridge mandibular defects covered by skin flaps in dogs. New bone formed, but soft tissue prevented complete bony union, indicating feasibility for defect repair.

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Area of Science:

  • Veterinary Surgery
  • Oral and Maxillofacial Surgery
  • Regenerative Medicine

Background:

  • Mandibular defects pose significant reconstructive challenges.
  • Distraction osteogenesis is a promising technique for bone lengthening and regeneration.

Purpose of the Study:

  • To evaluate the feasibility of using distraction osteogenesis to bridge a mandibular defect covered by a skin flap in a canine model.

Main Methods:

  • Mandibular defects were created in five adult dogs and covered with skin flaps.
  • An external distraction device was applied to a transport segment.
  • Distraction was performed at 1 mm/day, followed by a consolidation period.

Main Results:

  • Radiologic and histologic examinations confirmed new bone formation at the distraction site.

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  • The intraoral skin flap was displaced by the distraction process.
  • Complete bony union between the transport segment and the mandibular stumps was not achieved due to interposed soft tissue.

    • Conclusions:

    • Distraction osteogenesis is a feasible method for bridging mandibular defects covered with skin flaps.
    • Interposing soft tissue can impede complete bony union during mandibular distraction osteogenesis.