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[3-dimensional computed tomography with model preparation before mandibular reconstruction]

A Resten1, C Guédon, J D Piekarski

  • 1Service de radiologie, Fondation Ophtalmologique Rothschild, Paris.

Journal De Radiologie
|October 29, 1998
PubMed
Summary
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Three-dimensional computed tomography (3D-CT) modeling of the mandible before free vascularized bone graft transplantation improves functional and cosmetic outcomes in cancer resection patients. This technique aids in precise resection and flap conformation, reducing ischemia time.

Area of Science:

  • Oral and Maxillofacial Surgery
  • Reconstructive Surgery
  • Medical Imaging

Background:

  • Extended mandibular defects often result from cancer resection.
  • Reconstruction typically involves free vascularized bone graft transplantation.

Purpose of the Study:

  • To evaluate the efficacy of preoperative three-dimensional computed tomography (3D-CT) mandibular modeling in free vascularized bone graft reconstruction.
  • To assess the impact of 3D-CT on functional and cosmetic outcomes.

Main Methods:

  • A protocol involving 12 patients between 1992 and 1995.
  • Preoperative 3D-CT scans were used to create custom acrylic mandibular models.
  • Models aided in assessing tumor extension and determining resection limits.

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Main Results:

  • 3D-CT provided surgeons with improved visualization of the mandible and the model.
  • This facilitated better and quicker conformation of the bone flap.
  • Graft shaping at the donor site before pedicle division shortened ischemia time.

Conclusions:

  • Preoperative mandibular modeling with 3D-CT significantly enhances functional and cosmetic results in mandibular reconstruction.
  • 3D-CT is a valuable tool for planning complex reconstructive procedures.