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Real-time orthognathic surgical simulation using a mandibular motion tracking system.

Kenji Fushima¹, Masaru Kobayashi, Hiroaki Konishi

¹Kanazawa Orthodontic Clinic, Kanazawa, Japan. kyouseik@gamma.ocn.ne.jp

Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery

|May 10, 2007

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A new 3D orthognathic surgical simulation system integrates real dental models with virtual craniofacial models for precise occlusal correction and mandibular repositioning, aiding surgical planning.

Area of Science:

Oral and Maxillofacial Surgery
Biomedical Engineering
Computer-Aided Surgery

Background:

Orthognathic surgery requires accurate prediction of occlusal correction and mandibular repositioning.
Current simulation methods may lack integration between virtual models and physical dental casts.

Purpose of the Study:

To develop and present a novel 3D orthognathic surgical simulation system.
To evaluate the system's ability to predict occlusal outcomes and guide mandibular repositioning.

Main Methods:

The system integrates real-time dental cast motion with virtual craniofacial models.
Mandibular osteotomy and repositioning are simulated on a PC monitor.
Occlusal changes are confirmed using a physical dental cast simulator.

Related Experiment Videos

Surgical simulation allows for iterative refinement of the final mandibular position.

Occlusal splints are fabricated directly from the simulation data.

Main Results:

The system successfully predicts 3D occlusal correction and mandibular repositioning.
Integration of physical and virtual models enhances simulation accuracy.
The simulation process is repeatable, allowing for multiple planning attempts.
The fabricated occlusal wafer splint ensures accurate intermaxillary fixation.

Conclusions:

The developed orthognathic surgical simulation system effectively meets clinical needs.
It serves as a valuable tool for communication between orthodontists and surgeons.
The system facilitates precise surgical planning and execution in orthognathic procedures.