Towards identifying specification requirements for digital bone anchored prosthesis design incorporating substructure fabrication: a pilot study
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This research forms part of an ongoing investigation that aims to identify the specification requirements for advanced digital design and development technologies that may be used to design and fabricate complex, soft tissue facial prostheses. The work was conducted as part of a long-term collaboration with Morriston Hospital. Following a review of previously reported techniques, appropriate currently available design and development technologies were selected and applied to a case study. This study used a range of 3D optical surface scanning, computed tomography, 3D computer-aided design (CAD) and rapid prototyping (RP) technologies to capture, design and fabricate a bone-anchored auricular (ear) prosthesis including the retention components. This was the World's first published report of direct digital design and RP fabrication of retention components for extra-oral, facial prostheses. The techniques were assessed in terms of their effectiveness and the results used to identify future research and specification requirements in order to direct future technological developments. The case study identified that whilst digital technologies may be used to design implant retained facial prostheses successfully; many limitations need to be addressed to make the techniques clinically viable. It also identified the need to develop a more robust specification that covers areas such as resolution, accuracy, materials and design, against which potential design technologies may be assessed. Subsequent work has built upon this to develop a full specification, which has since been submitted for publication. The research closely involved those that provide a prosthetic rehabilitation service within the health service in order to ensure clinical and technological relevance.
International Journal of Prosthodontics
Eggbeer, D., Bibb, R. and Evans, P. (2006) 'Toward identifying specification requirements for digital bone-anchored prosthesis design incorporating substructure fabrication: a pilot study', International Journal of Prosthodontics, 19(3), pp.258-263
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