Related Experiment Video
Updated: Jun 3, 2026
09:10
Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures
Published on: August 5, 2021
Three-dimensional biomodeling in complex mandibular reconstruction and surgical simulation: prospective trial
Peter T Dziegielewski1, Jay Zhu, Ben King
1Division of Otolaryngology-Head and Neck Surgery, University of Alberta Hospital, Edmonton, AB.
Summary
Three-dimensional (3D) biomodels improve accuracy in mandibular reconstruction for experienced surgeons. These 3D models also serve as effective tools for teaching surgical residents complex reconstruction techniques.
Area of Science:
- Oral and Maxillofacial Surgery
- Biomedical Engineering
- Surgical Education
Background:
- Mandibular reconstruction presents significant challenges for both experienced and resident surgeons.
- Three-dimensional (3D) biomodeling offers potential for accurate physical models of craniofacial skeletons to aid reconstruction, but objective evaluation is lacking.
Purpose of the Study:
- To assess the efficacy of 3D biomodels in performing and learning mandibular reconstruction through surgical simulation.
Main Methods:
- A prospective cohort study involving 10 experienced and 10 resident surgeons.
- Surgeons performed standardized anterior hemimandibular defect reconstruction using freehand or 3D biomodel-assisted techniques on titanium plates.
- Accuracy was measured by projection and splay compared to a control mandible, alongside reconstruction time and usability via questionnaire.
Main Results:
- 3D biomodel-assisted reconstruction demonstrated statistically comparable projection and splay to the control mandible for both surgeon groups.
- Freehand techniques resulted in significant deviations in projection and splay for all participants.
- No significant difference in reconstruction time was observed between techniques, but usability ratings favored 3D biomodel-assisted bending.
Conclusions:
- Three-dimensional biomodels offer a usable and accurate method for mandibular reconstruction, particularly for experienced surgeons.
- 3D biomodels serve as an effective tool for surgical simulation and resident training in mandibular reconstruction.
