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

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

Published on: January 28, 2020

Evaluating Preoperative Models: A Methodologic Contribution.

Jean H D Fasel¹, Tanya Uldin², Paul Vaucher³

¹Clinical Anatomy Research Group, Department of Cellular Physiology and Metabolism, University Medical Center, Geneva, Switzerland.

World Neurosurgery

|December 26, 2015

Summary

This summary is machine-generated.

High-quality 3D printed skull replicas are achievable for surgical planning. Quantitative analysis shows minor deviations, with optical scanning recommended for future accuracy assessments.

Keywords:

3D printing Anatomic models Evaluation methods

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Area of Science:

Medical Imaging
Biomedical Engineering
Surgical Planning

Background:

Three-dimensional (3D) printing is increasingly utilized for creating patient-specific skull models.
These models aid in surgical education and customized preoperative planning.

Purpose of the Study:

To provide a methodologic analysis of 3D printed skull replicas.
To evaluate the accuracy of patient-specific skull replicas using the calvaria as a model.

Main Methods:

3D reconstruction of a skull from postmortem computed tomography (CT) data.
Conversion of the digital model to a physical 3D printed replica.
Qualitative and quantitative comparison of the replica with the original using anthropometric and 3D surface scanning.

Main Results:

Good qualitative agreement between the 3D printed replica and the original skull.
Quantitative deviations ranged from submillimetric to 3.7 mm.
Surface scans indicated mean deviations of 0.29 mm (inner surface) and 0.91 mm (whole object).

Conclusions:

Flawless qualitative 3D skull replicas are feasible with significant CT image editing.
Variations in production chains can affect model consistency for the same patient.
Optical 3D scanning is recommended for future studies assessing deviations and patterns.