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[Distraction osteogenesis with a fully implantable system. Experimental study].

O Ploder1, W Mayr, G Schnetz

  • 1Universitätsklinik für Mund-, Kiefer- und Gesichtschirurgie, Wien.

Mund-, Kiefer- Und Gesichtschirurgie : MKG
|July 22, 1999
PubMed
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A novel internal device for mandibular lengthening via distraction osteogenesis was tested in sheep. This fully implanted system achieved significant bone lengthening without external components, paving the way for future human applications.

Area of Science:

  • Oral and Maxillofacial Surgery
  • Biomedical Engineering
  • Regenerative Medicine

Background:

  • Distraction osteogenesis is a proven technique for mandibular lengthening.
  • Current methods often rely on external or intraoral devices, posing risks of infection and patient discomfort.
  • A need exists for less invasive, fully implanted solutions for bone regeneration.

Purpose of the Study:

  • To present a novel, completely implanted electromechanical device for mandibular lengthening.
  • To evaluate the efficacy and feasibility of this internal device in a preclinical sheep model.
  • To assess the potential for automated, transmucosal-free distraction osteogenesis.

Main Methods:

  • An osteotomy was performed on the sheep mandible, followed by fixation of the internal electromechanical device.

Related Experiment Videos

  • The power and control unit were placed subcutaneously in the neck region.
  • After a 5-day healing period, magnetic activation initiated distraction at 0.04 mm/h, totaling 1.0 mm daily for 14 days.

    • Main Results:

    • The newly designed internal device was successfully implemented for distraction osteogenesis in sheep.
    • A maximum mandibular lengthening of 13.6 mm was achieved over the 14-day distraction period.
    • The device enabled automated, transmucosal-free mandibular lengthening.

    Conclusions:

    • The fully implanted device demonstrates successful mandibular lengthening in a preclinical model.
    • This innovative approach offers a less invasive alternative to existing distraction osteogenesis methods.
    • Further research is warranted to translate this technology for human clinical application.