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[Computerised three-dimensional surgical simulator. Introduction and precision analysis of a new system]
1Klinische Abteilung für Mund-, Kiefer- und Gesichtschirurgie, Universität Graz, Austria. gert.santler@kfunigraz.ac.at
Mund-, Kiefer- Und Gesichtschirurgie : MKG
|February 9, 2000
Summary
This study introduces a new system for oral maxillofacial surgery, improving the accuracy of transferring 3D surgical simulations to patients. The 3D-COSMOS system enhances precision in virtual surgical planning and intraoperative positioning.
Area of Science:
- Oral and Maxillofacial Surgery
- Medical Imaging
- Surgical Simulation
Background:
- Computed tomography (CT)-based 3D models are vital in oral maxillofacial surgery.
- Challenges exist in transferring surgical simulation results to patients due to lack of reference points, difficulty in 3D measurements, and imprecise intraoperative transfer.
- Existing methods lack the precision required for accurate surgical outcomes.
Purpose of the Study:
- To present a novel system, 3D-COSMOS, designed to overcome the limitations of current 3D model applications in oral maxillofacial surgery.
- To enhance the accuracy of transferring virtual surgical plans to the operative field.
- To improve the precision of 3D measurements and intraoperative positioning in orthognathic surgery.
Main Methods:
- Development of a system utilizing plaster models of 3D dental arches with radioopaque hemispheres for reference.
- Employment of a computerised electromagnetic tracker for 3D measurements during simulated surgery.
- Integration of a novel transfer system with a neurosurgical head frame for stable intraoperative positioning.
Main Results:
- The 3D-COSMOS system achieved a mean accuracy of 0.03 mm in replacing dental arches.
- Precise measurement of 3D translations of jaw segments (0.11 mm) was possible simultaneously at the osteotomy line and teeth.
- Mechanical transfer of the new jaw position was achieved with a precision of 0.05 mm.
- Surgical operation time was minimally increased by approximately 15 minutes.
Conclusions:
- The 3D-COSMOS system effectively addresses the challenges of precise reference points, 3D measurement, and intraoperative transfer in oral maxillofacial surgery.
- This system significantly enhances the accuracy of virtual surgical planning and its execution in orthognathic procedures.
- The developed technology offers a precise and efficient solution for bimaxillary surgery, improving patient outcomes.