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The Precise Repositioning Instrument for Genioplasty and a Three-Dimensional Printing Technique for Treatment of Complex Facial Asymmetry

  • Original Article
  • Craniofacial/Maxillofacial
  • Published:
Aesthetic Plastic Surgery Aims and scope Submit manuscript

Abstract

Background

Facial asymmetry is very common in maxillofacial deformities. It is difficult to achieve accurate reconstruction. With the help of 3D printing models and surgical templates, the osteotomy line and the amount of bone grinding can be accurate. Also, by means of the precise repositioning instrument, the repositioning of genioplasty can be accurate and quick. In this study, we present a three-dimensional printing technique and the precise repositioning instrument to guide the osteotomy and repositioning, and illustrate their feasibility and validity.

Methods

Eight patients with complex facial asymmetries were studied. A precise 3D printing model was obtained. We made the preoperative design and surgical templates according to it. The surgical templates and precise repositioning instrument were used to obtain an accurate osteotomy and repositioning during the operation. Postoperative measurements were made based on computed tomographic data, including chin point deviation as well as the symmetry of the mandible evaluated by 3D curve functions.

Results

All patients obtained satisfactory esthetic results, and no recurrences occurred during follow-up. The results showed that we achieved clinically acceptable precision for the mandible and chin. The mean and SD of ICC between R-Post and L-Post were 0.973 ± 0.007. The mean and SD of chin point deviation 6 months after the operation were 0.63 ± 0.19 mm.

Conclusion

The results of this study suggest that the three-dimensional printing technique and the precise repositioning instrument could aid in making better operation designs and more accurate manipulation in orthognathic surgery for complex facial asymmetry.

Level of Evidence IV

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Acknowledgements

This study was supported by grants from the Committee of National Nature Science Foundation (No. 81400532) in China, Norman Bethune Program of Jilin University (No. 2015301), Fund Project of Jilin Health and Family Planning Commission (No. 2015Q017), Jilin University’s Outstanding Young Teacher Training Program (No. 419080500367), the Program for Fundamental Research of Jilin University (No. 450060491134) and the 13th 5-year science and technology project of the Education Department of Jilin Province (No. 2016486). The patent application for the precise repositioning instrument for genioplasty is already submitted (Patent No. 201410032051. 2, China).

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Author notes

  1. Lin Wang and Dan Tian made the equal contribution to this study.

Authors and Affiliations

  1. Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Jilin University, No.1500 Qinghua Road, Changchun, 130021, Jilin, China

    Lin Wang, Yanju Xiao & Guomin Wu

  2. Life Science Research Center, Beihua University, Jilin City, China

    Dan Tian

  3. Department of Orthodontics, School and Hospital of Stomatology, Jilin University, Changchun, China

    Xiumei Sun

  4. Department of Radiology, School and Hospital of Stomatology, Jilin University, Changchun, China

    Li Chen

Authors
  1. Lin Wang
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  2. Dan Tian
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  3. Xiumei Sun
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  4. Yanju Xiao
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  5. Li Chen
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  6. Guomin Wu
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Corresponding author

Correspondence to Guomin Wu.

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The authors declare that they have no conflict of interest.

Ethical Approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the hospital research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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Wang, L., Tian, D., Sun, X. et al. The Precise Repositioning Instrument for Genioplasty and a Three-Dimensional Printing Technique for Treatment of Complex Facial Asymmetry. Aesth Plast Surg 41, 919–929 (2017). https://doi.org/10.1007/s00266-017-0875-2

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  • DOI: https://doi.org/10.1007/s00266-017-0875-2

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