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Related Experiment Video

Updated: May 23, 2026

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
10:42

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

Published on: January 28, 2020

Digital mandibular reconstruction design guided by condylar position.

Yemu Yang1, Ziyu Zhu1, Chuhan Zhang1

  • 1Department of Oral and Maxillofacial Surgery, Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; College of Stomatology, Zhejiang University, Hangzhou, Zhejiang, China; Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, Zhejiang, China.

Journal of Cranio-Maxillo-Facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery
|May 21, 2026
PubMed
Summary

A new condyle-oriented digital workflow accurately restores mandibular defects after tumor resection. This method improves facial form and function, offering better quality of life for patients undergoing head and neck cancer reconstruction.

Keywords:
Free fibula flapMandibular reconstructionTemporomandibular jointVirtual surgical planning

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Last Updated: May 23, 2026

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Biomedical Engineering
  • Reconstructive Surgery

Background:

  • Mandibular defects from tumor resection impair facial aesthetics, bite stability, and temporomandibular joint (TMJ) function.
  • Current reconstruction methods face challenges in achieving precise anatomical and functional restoration.

Purpose of the Study:

  • To introduce and evaluate a condyle-oriented digital workflow for optimizing condylar position in mandibular reconstruction.
  • To assess the accuracy, functional outcomes, and quality of life following this novel digital approach.

Main Methods:

  • Development of a digital workflow using preoperative CT data for mirrored mandibular models and patient-specific surgical guides.
  • Utilized a shared screw-hole strategy for precise intraoperative alignment during fibular flap reconstruction.
  • Evaluated 17 patients via 3D CT analysis, TMJ function assessment, and EORTC QLQ-H&N35 questionnaires.

Main Results:

  • High reconstruction accuracy with no significant postoperative differences in condylar position or mandibular morphology compared to preoperative measurements.
  • Temporomandibular joint (TMJ) function outcomes were comparable to traditional methods.
  • Improved patient-reported quality of life, particularly in diet-related domains.

Conclusions:

  • The condyle-oriented digital workflow achieves precise anatomic restoration in mandibular reconstruction.
  • This approach leads to favorable functional rehabilitation and enhanced patient quality of life.
  • Digital planning and patient-specific guides are effective for complex head and neck cancer reconstructions.