Related Experiment Video
Updated: Sep 2, 2025
10:42
A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
6.6K
The Amsterdam UMC protocol for computer-assisted mandibular and maxillary reconstruction; A cadaveric study
Gustaaf J C van Baar1, Johannes N Lodders1, Chayenne Chhangur1
1Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.
Oral Oncology
|August 1, 2022
Summary
Computer-assisted surgery (CAS) demonstrated promising accuracy for mandibular and maxillary reconstruction, including immediate dental implant placement. This technique achieved precise implant positioning for prosthetic device fabrication.
Area of Science:
- Oral and Maxillofacial Surgery
- Biomedical Engineering
- Reconstructive Surgery
Background:
- Mandibular and maxillary defects pose significant reconstructive challenges.
- Computer-assisted surgery (CAS) offers potential for improved accuracy in complex reconstructions.
- Immediate dental implant placement enhances functional outcomes in reconstruction.
Purpose of the Study:
- To evaluate the accuracy of CAS-guided mandibular and maxillary reconstruction.
- To assess immediate dental implant placement accuracy in various Brown defect classes.
- To validate a new Amsterdam UMC reconstruction protocol.
Main Methods:
- Cadaveric study involving 14 mandibular and 6 maxillary reconstructions.
- Virtual planning and surgical procedures followed the Amsterdam UMC reconstruction protocol.
- Postoperative evaluation used a standardized guideline for accuracy assessment.
Main Results:
- Achieved promising accuracy for all mandibular angles (deviations < 3°).
- Average deviation for dental implants in neomandibles was 3.68 mm (dXYZ).
- Average deviation for dental implants in neomaxillas was 3.24 mm (dXYZ).
Conclusions:
- CAS-guided reconstruction provides high accuracy for mandibular and maxillary defects.
- Immediate dental implant placement is accurate and within prosthetic manufacturing tolerances.
- The proposed protocol shows effectiveness for complex craniofacial reconstructions.
