Fabrication of Maxillofacial Implant Using CAD CAM System

We present an approach that combines Computer Tomography (CT), reverse engineering (RE) and rapid prototyping (RP) for individual implant production in maxillofacial surgery. 3D acquisition of the patient’s skull is performed, after acquisition of data; an individual computer-based 3D model of the bony defect is generated. These data are transferred into RE software to create the implant using a computer-aided design (CAD) model, which is directed into the RP machine for the production of the physical model. The implant is then directly used in investment casting such as “Quick Cast” pattern to produce the titanium model. In the clinical reports presented here, reconstructions of one patient with mandible bone defects were performed using this method. The custom prostheses perfectly fit the defects during the operations, and surgery time was reduced.

[1]  K. Krishnan,et al.  The Application of Rapid Prototyping Techniques in Cranial Reconstruction and Preoperative Planning in Neurosurgery , 2003, The Journal of craniofacial surgery.

[2]  D. Dean,et al.  Computer Aided Design of Large-Format Prefabricated Cranial Plates , 2003, The Journal of craniofacial surgery.

[3]  Bingheng Lu,et al.  Rapid prototyping assisted surgery planning and custom implant design , 2009 .

[4]  H Eufinger,et al.  Individual Prefabricated Titanium Implants in Reconstructive Craniofacial Surgery: Clinical and Technical Aspects of the First 22 Cases , 1998, Plastic and reconstructive surgery.

[5]  J. Bill,et al.  Stereolithography in oral and maxillofacial operation planning. , 1995, International journal of oral and maxillofacial surgery.

[6]  K. Tabuchi,et al.  Model-based surgical planning and simulation of cranial base surgery. , 1998, Neurologia medico-chirurgica.

[7]  A. Harders,et al.  Reconstruction of craniofacial bone defects with individual alloplastic implants based on CAD/CAM-manipulated CT-data. , 1995, Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery.

[8]  B. Eppley,et al.  Computer-generated patient models for reconstruction of cranial and facial deformities. , 1998, The Journal of craniofacial surgery.

[9]  J. Winder,et al.  Medical rapid prototyping technologies: state of the art and current limitations for application in oral and maxillofacial surgery. , 2005, Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons.

[10]  P Cinquin,et al.  Computer-assisted mandibular condyle positioning in orthognathic surgery. , 1996, Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons.

[11]  Lu Bingheng,et al.  Design and fabrication of custom mandible titanium tray based on rapid prototyping. , 2004, Medical engineering & physics.

[12]  Lu Bingheng,et al.  Customized design and manufacturing of chin implant based on rapid prototyping , 2005 .