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Computer-Aided Design and Manufacturing and Rapid Prototyped Nanoscale Hydroxyapatite/Polyamide (n-HA/PA) Construction for Condylar Defect Caused by Mandibular Angle Ostectomy

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Abstract

The fracture or defect of the mandibular condyle is one of the serious complications during angle-reduction ostectomy. Reconstruction of such defects also is a daunting task. The case report describes a method based on computer-aided design/computer-aided manufacturing (CAD/CAM) and rapid prototyping nanoscale hydroxyapatite/polyamide (n-HA/PA) for individual design, fabrication, and implantation of a mandibular condyle. A 27-year-old woman with a square-shaped face who had previously undergone mandibular angle reduction reported with malocclusion, deviated mouth, collapse of the right side of the face, and masticatory problems. The reason for the problems was the unintended removal of the condyle during the ostectomy procedure. Using computed tomography (CT) data, a biomimetic n-HA/PA scaffold, and CAD/CAM for rapid prototyping by three-dimensional (3D) printing, a perfect-fitting condylar implant was fabricated. A surgical guide system also was developed to reproduce the procedures accurately so a perfect fit could be obtained during surgery. The patient ultimately regained reasonable jaw contour and appearance, as well as appreciable temporomandibular joint (TMJ) function.

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Acknowledgments

This study was supported by Natural Science Foundation of China (30400506) and China 973 funds (2007CB936102).

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Authors and Affiliations

  1. The State Key Laboratory of Oral Diseases and Orthognathic Surgery, Sichuan University West China College of Stomatology, Chengdu, 610064, People’s Republic of China

    Jihua Li, Yuchun Hsu, En Luo, Ashish Khadka & Jing Hu

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  1. Jihua Li
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  2. Yuchun Hsu
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  3. En Luo
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  4. Ashish Khadka
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  5. Jing Hu
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Correspondence to Jihua Li.

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Li, J., Hsu, Y., Luo, E. et al. Computer-Aided Design and Manufacturing and Rapid Prototyped Nanoscale Hydroxyapatite/Polyamide (n-HA/PA) Construction for Condylar Defect Caused by Mandibular Angle Ostectomy. Aesth Plast Surg 35, 636–640 (2011). https://doi.org/10.1007/s00266-010-9602-y

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  • DOI: https://doi.org/10.1007/s00266-010-9602-y

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