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Related Experiment Video

Updated: Jun 21, 2026

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach
08:01

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

Published on: August 24, 2018

Virtual bending of mandibular reconstruction plates using a computer-aided design.

Per Dérand1, Jan-Michael Hirsch

  • 1Consultant, Department of Surgical Sciences, Oral and Maxillofacial Surgery, Medical Faculty, Uppsala University, Uppsala, Sweden. per.derand@adamomail.se

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons
|July 21, 2009
PubMed
Summary

Virtual surgical planning enables accurate bending of reconstruction plates for bony defects, matching traditional freehand methods. This digital approach offers comparable precision for congenital or acquired bony entities.

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Last Updated: Jun 21, 2026

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Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures
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Area of Science:

  • Biomedical Engineering
  • Oral and Maxillofacial Surgery
  • Digital Surgical Planning

Background:

  • Reconstruction plate bending is crucial for treating congenital or acquired bony defects.
  • Traditional freehand bending in stereolithographic models can be technique-sensitive.

Purpose of the Study:

  • To investigate the feasibility of virtually designing and manufacturing templates for accurate reconstruction plate bending.
  • To compare the accuracy of virtually templated plate bending with the traditional freehand approach.

Main Methods:

  • Creating a virtual skull model from CT data and a stereolithographic model.
  • Virtually bending a 2.4-mm Compact UniLock plate around the virtual mandible to create a template.
  • Bending five plates using the virtual template and five using a stereolithographic model, comparing outcomes.

Main Results:

  • No statistically significant difference in accuracy was observed between the virtual template and stereolithographic model groups.
  • The median discrepancy between the two methods was minimal, measuring 0.1 mm.

Conclusions:

  • Virtually produced templates, based on virtual surgical planning, allow for reconstruction plate bending with accuracy comparable to the traditional freehand method.
  • This digital workflow offers a viable alternative for precise plate bending in reconstructive surgery.