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A Modified Method Using Double Computed Tomography Scan Procedure to Maintain Mandibular Width in Mandibular

Shunyao Shen1,2, Chengshuai Yang1,2, Jinyang Wu1,2

  • 1Department of Oral and Cranio-maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine.

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|November 26, 2019
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Summary
This summary is machine-generated.

This study shows a new template system and double CT scan procedure reliably maintain mandibular width during fibular flap reconstruction. This method ensures accurate surgical outcomes for patients needing jaw repair.

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Biomedical Engineering
  • Reconstructive Surgery

Background:

  • Mandibular reconstruction presents challenges in maintaining anatomical width.
  • Fibular flaps are a common method for mandibular reconstruction.
  • Accurate pre-operative planning and intra-operative guidance are crucial for successful outcomes.

Purpose of the Study:

  • To evaluate a modified template system and double computed tomography (CT) scan procedure for maintaining mandibular width.
  • To assess the reliability of this technique in patients undergoing mandibular reconstruction with fibular flaps.

Main Methods:

  • Ten patients undergoing mandibular reconstruction with fibular flaps were included.
  • Computer-aided surgical simulation (CASS) was used for pre-operative planning.
  • A 3D-printed template system and cutting guides were fabricated based on double CT scans.
  • Post-operative outcomes were compared to planned models using superimposition and deviation measurements.

Main Results:

  • The template system and double CT scan procedure were successfully implemented in all surgeries.
  • The largest linear deviation (root-mean-square deviation) between planned and actual remnant segments was 1.01 mm.
  • The largest angular deviation was 4.05°.

Conclusions:

  • The developed template system and double CT scan procedure offer a reliable method for preserving mandibular width.
  • This technique aids in achieving predictable outcomes in mandibular reconstruction using fibular flaps.