Development of a simulation system in mandibular orthognathic surgery based on integrated three-dimensional data
| Autor: | Hidetaka Shimizu, Katsuhiro Minami, Tae-Geon Kwon, Takamitsu Mano, Yoshihide Mori |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Male
Rotation Cephalometry medicine.medical_treatment Osteotomy Sagittal Split Ramus Orthognathic surgery Dentistry Sagittal split ramus osteotomy (SSRO) Mandible Osteotomy Patient Care Planning Orthognathic Surgical Procedures User-Computer Interface Young Adult Imaging Three-Dimensional Surgical simulation Bone plate medicine Image Processing Computer-Assisted Prognathism Humans Computer Simulation Orthodontics Computer tomography (CT) business.industry Mandibular Condyle Reproducibility of Results medicine.disease Models Dental Otorhinolaryngology Facial Asymmetry Torque Surgery Original Article Female Oral Surgery business Three-dimensional Tomography X-Ray Computed Bone Plates Facial symmetry Bone Wires Follow-Up Studies Forecasting |
| Zdroj: | Oral and Maxillofacial Surgery |
| ISSN: | 1865-1569 1865-1550 |
| Popis: | Purpose Surgical simulation should reflect the 3D movement of dentition and the resultant movement of the osteotomized segments, which can influence surgical outcome. The present study was aimed at developing a new simulation system that enables virtual osteotomy of a given surgical situation and evaluation of the bony interference between the osteotomized segments of the mandible. Subjects and methods The data of 3D computer tomography (CT) for maxillomandibular dental casts were integrated into the standard coordinates of a 3D cephalogram. To evaluate the accuracy of the system, measurement errors of the 3D CT virtual model from a dry skull were compared with the computer simulation system and a contact-type 3D digitizer. To examine the clinical accessibility, 15 mandibular prognathism patients with mild to severe asymmetry were evaluated with the simulation program. Results The average error of measurement in all directions was 1.31 mm. It was possible to simulate various osteotomy procedures by conversion of the 3D coordinates of the dental cast and CT data into the standard coordinate system of a 3D cephalogram. Using this simulation system, it was possible to prevent condylar torque or segment malpositioning by removing the bony interference visualized by a 3D virtual model. Conclusion A new system, which enables the precise visualization of osteotomized segments and calculation of bony interference, was proposed in the present study. This new system provides an acceptable precision of treatment planning of orthognathic surgery, especially for facial asymmetry. |
| Databáze: | OpenAIRE |
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