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Design, development and clinical validation of computer-aided surgical simulation system for streamlined orthognathic surgical planning

  • Peng Yuan
  • Huaming Mai
  • Jianfu Li
  • Dennis Chun-Yu Ho
  • Yingying Lai
  • Siting Liu
  • Daeseung Kim
  • Zixiang Xiong
  • David M. Alfi
  • John F. Teichgraeber
  • Jaime Gateno
  • James J. Xia
Review Article

Abstract

Purpose

There are many proven problems associated with traditional surgical planning methods for orthognathic surgery. To address these problems, we developed a computer-aided surgical simulation (CASS) system, the AnatomicAligner, to plan orthognathic surgery following our streamlined clinical protocol.

Methods

The system includes six modules: image segmentation and three-dimensional (3D) reconstruction, registration and reorientation of models to neutral head posture, 3D cephalometric analysis, virtual osteotomy, surgical simulation, and surgical splint generation. The accuracy of the system was validated in a stepwise fashion: first to evaluate the accuracy of AnatomicAligner using 30 sets of patient data, then to evaluate the fitting of splints generated by AnatomicAligner using 10 sets of patient data. The industrial gold standard system, Mimics, was used as the reference.

Result

When comparing the results of segmentation, virtual osteotomy and transformation achieved with AnatomicAligner to the ones achieved with Mimics, the absolute deviation between the two systems was clinically insignificant. The average surface deviation between the two models after 3D model reconstruction in AnatomicAligner and Mimics was 0.3 mm with a standard deviation (SD) of 0.03 mm. All the average surface deviations between the two models after virtual osteotomy and transformations were smaller than 0.01 mm with a SD of 0.01 mm. In addition, the fitting of splints generated by AnatomicAligner was at least as good as the ones generated by Mimics.

Conclusion

We successfully developed a CASS system, the AnatomicAligner, for planning orthognathic surgery following the streamlined planning protocol. The system has been proven accurate. AnatomicAligner will soon be available freely to the boarder clinical and research communities.

Keywords

Computer-aided surgical simulation Virtual surgical planning Orthognathic surgery Computed tomography Composite skull model Neutral head posture 3D cephalometric analysis Virtual osteotomy Streamlined surgical splint design 

Notes

Acknowledgements

The author would like to thank Chien-Ming Chang, D.D.S., Yi-Fang Lo, D.D.S., Shunyao Shen D.D.S., M.S., Xiaoyan Zhang, Ph.D., Ken-Chung Chen, D.D.S., M.S., Zhen Tang, D.D.S., M.S., Ph.D., and Xiaobo Zhou, Ph.D., for their contributions on this project. The preliminary study of this manuscript was presented in part at \(7^{\mathrm{th}}\) International Conference on Medical Imaging and Augmented Reality (MIAR) in Bern, Switzerland on August 24–26, 2016.

Funding This study is funded in part by the United States National Institutes of Health/National Institute of Dental and Craniofacial Research (NIH/NIDCR) Grants (R01DE022676 and R01DE021863). Dr. Mai was sponsored by Scholar Award of Guangxi Education Department, Guangxi, China, and Dr. Ho was sponsored by Taipei Municipal Wan Fang Hospital Taipei, Taiwan (ROC), while working at the Surgical Planning Laboratory, Department of Oral and Maxillofacial Surgery, Houston Methodist Research Institute, Houston, TX, USA.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

The study was approved by our IRB [approval number: IRB(2)1011-0187x]. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.

Informed consent

Due to the fact that this study only utilized historical data that had been collected as a part of the medical records during the patient care, informed consent is not required.

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Copyright information

© CARS 2017

Authors and Affiliations

  • Peng Yuan
    • 1
  • Huaming Mai
    • 1
  • Jianfu Li
    • 1
  • Dennis Chun-Yu Ho
    • 1
  • Yingying Lai
    • 1
  • Siting Liu
    • 1
  • Daeseung Kim
    • 1
  • Zixiang Xiong
    • 2
  • David M. Alfi
    • 1
    • 3
  • John F. Teichgraeber
    • 4
  • Jaime Gateno
    • 1
    • 3
    • 4
    • 5
  • James J. Xia
    • 1
    • 3
    • 4
    • 5
  1. 1.Department of Oral and Maxillofacial SurgeryHouston Methodist Research InstituteHoustonUSA
  2. 2.Department of Electrical and Computer EngineeringTexas A&M UniversityCollege StationUSA
  3. 3.Department of Surgery (Oral and Maxillofacial Surgery), Weill Medical CollegeCornell UniversityNew YorkUSA
  4. 4.Division of Pediatric Plastic Surgery, Department of Pediatric SurgeryThe University of Texas Houston Health Science CenterHoustonUSA
  5. 5.Department of OrthodonticsThe University of Texas Houston Health Science CenterHoustonUSA

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