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[Virtual planning and intraoperative control using computer navigation systems in orthognatic surgery]
P P Mitroshenkov1,2, A Y Drobyshev1, P N Mitroshenkov2
1Moscow State University of Medicine and Dentistry named after A.I. Evdokimov, Moscow, Russia.
Stomatologiia
|October 9, 2020
Summary
Computer navigation in orthognathic surgery enhances bone fragment accuracy and simplifies positioning. This technology reduces surgery time and improves aesthetic outcomes for patients with facial asymmetry.
Area of Science:
- Oral and Maxillofacial Surgery
- Medical Imaging and Computer Assisted Surgery
Background:
- Orthognathic surgery corrects severe dental and skeletal discrepancies.
- Computer navigation offers potential for enhanced precision in complex surgical procedures.
Purpose of the Study:
- To assess the versatility and accuracy of computer navigation in orthognathic surgery.
- To analyze the precise positioning of osteotomized bone fragments using virtual and postoperative 3D models.
Main Methods:
- 27 patients with facial asymmetry (Class III, Class II, hemifacial microsomia) were included.
- Preoperative planning utilized 3D-cephafolometric software and optical navigation systems.
- Intraoperative control of bone fragments was performed using optical navigation stations (BrainLab, Stryker).
Main Results:
- Mean surgical time was 181 minutes, with a mean registration time of 5 minutes.
- Mean target registration error (TRE) was 0.9±0.18 mm.
- Differences between actual and virtual maxillary movements ranged from 0.39-1.12 mm across planes.
Conclusions:
- Computer navigation simplifies bone fragment positioning in orthognathic surgery.
- The technology aids in reducing surgery duration and achieving satisfactory aesthetic and occlusal results.
