Computer-aided design and manufacturing and rapid prototyped nanoscale hydroxyapatite/polyamide (n-HA/PA) construction for condylar defect caused by mandibular angle ostectomy.
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.
The State Key Laboratory of Oral Diseases and Orthognathic Surgery, Sichuan University West China College of Stomatology, Chengdu 610064, People's Republic of China. leejimwa6698@sohu.com
Jihua
J
Li
Yuchun
Y
Hsu
En
E
Luo
Ashish
A
Khadka
Jing
J
Hu
D000328:Adult; D018786:Bone Substitutes; D017076:Computer-Aided Design; D017886:Durapatite; D005146:Facial Asymmetry / Q000209:etiology / Q000601:surgery; D005260:Female; D050723:Fractures, Bone; D006801:Humans; D008334:Mandible / Q000601:surgery; D008335:Mandibular Condyle / Q000293:injuries* / Q000601:surgery; D008338:Mandibular Injuries / Q000209:etiology / Q000601:surgery*; D009757:Nylons; D011474:Prosthesis Design; D019651:Plastic Surgery Procedures / Q000009:adverse effects / Q000379:methods*; D014057:Tomography, X-Ray Computed
D018786:Bone Substitutes; D009757:Nylons; D017886:Durapatite