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Related Experiment Videos

Trifocal distraction osteogenesis for segmental mandibular defect: a technical innovation

Y Sawaki1, H Hagino, H Yamamoto

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

Journal of Cranio-Maxillo-Facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery
|March 21, 1998
PubMed
Summary

Distraction osteogenesis successfully reconstructed a large mandibular bone defect after cancer treatment complications. This technique regenerated bone, offering a viable solution for complex jaw reconstruction.

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Regenerative Medicine
  • Biomaterials Engineering

Background:

  • Mandibular defects pose significant challenges in oral and maxillofacial surgery.
  • Distraction osteogenesis is a recognized technique for mandibular hypoplasia and bone defect reconstruction.
  • Previous reconstruction with a titanium plate and flap failed due to infection.

Observation:

  • A 45-year-old male patient with a 60 mm mandibular segmental defect following oral cancer treatment.
  • Initial reconstruction with a titanium plate and vascularized rectus-abdominis flap was complicated by infection, necessitating plate removal.
  • Trifocal distraction osteogenesis was employed using a novel 3D distractor at a rate of 1 mm/day.

Findings:

  • Distraction osteogenesis facilitated significant new bone formation, almost filling the 60 mm defect.

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  • Regenerated bone contributed to the lengthening of the gingiva over the defect area.
  • Minor free bone grafts were required to achieve complete bony continuity.

    • Implications:

    • Distraction osteogenesis presents a promising alternative for reconstructing large mandibular segmental defects, especially after oncological resections.
    • This case highlights the potential of regenerative approaches in overcoming complications from conventional reconstruction methods.
    • Further research into optimizing distraction protocols for complex mandibular reconstruction is warranted.