A CAD and AM process for maxillofacial prostheses bar-clip retention
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Author
Daniel, Steffan
Eggbeer, Dominic
Date
2016-01-18Acceptance date
2014-11-26
Type
Article
Publisher
Emerald
ISSN
1355-2546
Metadata
Show full item recordAbstract
Purpose
– This paper aims to present novel techniques for designing maxillofacial prostheses using computer-aided design (CAD) and additive manufacture (AM), focusing on the integration of osseointegrated retention components. A fully computer-aided approach is considered as a major step towards reducing patient consultation time and an efficient workflow.
Design/methodology/approach
– The workflow was illustrated through a phantom model. 3D laser scanning was used to capture the phantom anatomy and pre-fabricated geometric features, which enabled the implant positions to be precisely reverse engineered in the data. A novel CAD workflow was used to design the retention mechanisms and a mould. The individual components were fabricated using AM. A definitive silicone prosthesis that incorporated a bar/clip retention mechanism was then fabricated.
Findings
– The research demonstrated that retention components can be integrated into prostheses using appropriate CAD and AM technologies.
Originality/value
– This study demonstrates the feasibility of a computer-aided workflow for designing facial prostheses that incorporate osseointegrated retention mechanisms. Novel techniques were developed to: digitise abutment details using custom scanning locators; design retention components; manufacture retention components using AM; integrate retention components into a CAD and AM prosthesis mould. This overcomes limitations identified in previously published cases and demonstrated significant potential to reduce patient consultation time and create a clinically viable process.
Journal/conference proceeding
Rapid Prototyping Journal;
Citation
Daniel S. and Eggbeer D. (2016) 'A CAD & AM process for maxillofacial prostheses bar-clip retention', Rapid Prototyping Journal, 22 (1), pp.170-177.
Rights
The final published version is available at http://dx.doi.org/10.1108/RPJ-03-2014-0036Collections
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