Fabrication of a maxillofacial prosthesis using a computer-aided design and manufacturing system.

PURPOSE Maxillofacial prostheses are usually fabricated on the basis of impressions made with dental-impression material. The extent to which the prosthesis reproduces normal facial morphology depends on the clinical judgment of the individual fabricating the prosthesis. This paper describes a computer-aided design and manufacturing (CAD/CAM) system for the fabrication of maxillofacial prostheses. This system will provide a more consistently accurate reproduction of facial morphology. MATERIALS AND METHODS Facial measurements were taken using a non-contact three-dimensional laser morphological measurement system. The measurements were sent to a computer numerical controlled (CNC) milling machine to generate a cast of the patient's face for the fabrication of prosthesis. RESULTS Facial contours were measured using a laser. This method minimizes patient discomfort and avoids soft tissue distortion by impression material. Moreover, the digital data obtained is easy to store and transmit, and mirror-images can be readily generated by computer processing. CONCLUSION This method offers an objective, quantified approach for fabricating maxillofacial prostheses.

[1]  L H Chen,et al.  A CAD/CAM technique for fabricating facial prostheses: a preliminary report. , 1997, The International journal of prosthodontics.

[2]  J. Preston,et al.  CAD/CAM in dentistry. , 1996, The Alpha omegan.

[3]  H O Gold,et al.  Open-eye impression technique for orbital prostheses. , 1976, The Journal of prosthetic dentistry.

[4]  B. Toth,et al.  Computer‐Designed Prostheses for Orbitocranial Reconstruction , 1988, Plastic and reconstructive surgery.

[5]  W R Fright,et al.  Three-dimensional analysis techniques--Part 2: Laser scanning: a quantitative three-dimensional soft-tissue analysis using a color-coding system. , 1997, The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association.

[6]  V F Ferrario,et al.  Distance from symmetry: a three-dimensional evaluation of facial asymmetry. , 1994, Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons.

[7]  A S Garden,et al.  Total midface reconstruction after radical tumor resection: a case report and overview of the problem. , 1996, Annals of plastic surgery.

[8]  K. Bush,et al.  Three-dimensional facial anthropometry using a laser surface scanner: validation of the technique. , 1996, Plastic and reconstructive surgery.

[9]  S. Miles Standish,et al.  Maxillofacial prosthetics : multidisciplinary practice , 1972 .

[10]  Mitsuhiro Tsuji,et al.  Application of a non-contact three-dimensional laser morphological measuring system and milling machine to the production of maxillofacial prostheses , 2000 .

[11]  M B Habal,et al.  Facial rehabilitation by the application of osseointegrated craniofacial implants. , 1998, The Journal of craniofacial surgery.

[12]  J Willer,et al.  Computer-assisted milling of dental restorations using a new CAD/CAM data acquisition system. , 1998, The Journal of prosthetic dentistry.

[13]  M W Vannier,et al.  Quantitative Three-Dimensional Assessment of Face-Lift with an Optical Facial Surface Scanner , 1993, Annals of plastic surgery.

[14]  M Andersson,et al.  A new computer-assisted method for fabrication of crowns and fixed partial dentures. , 1995, Quintessence international.

[15]  F C van Ginkel,et al.  Three-dimensional evaluation of facial asymmetry in cleft lip and palate. , 1994, The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association.