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A functional methodology on the manufacturing of customized polymeric cranial prostheses from CAT using SPIF

Gabriel Centeno (Department of Mechanical and Manufacturing Engineering, University of Seville, Seville, Spain)
Domingo Morales-Palma (Department of Mechanical and Manufacturing Engineering, University of Seville, Seville, Spain)
Borja Gonzalez-Perez-Somarriba (Department of Mechanical and Manufacturing Engineering, University of Seville, Seville, Spain)
Isabel Bagudanch (Department of Mechanical Engineering and Industrial Construction, Universitat de Girona, Girona, Spain)
Juan José Egea-Guerrero (Department of Cranio-Maxillofacial Surgery, Virgen del Rocio University Hospital, Seville, Spain)
Luis Miguel Gonzalez-Perez (Department of Cranio-Maxillofacial Surgery, Virgen del Rocio University Hospital, Seville, Spain)
María Luisa García-Romeu (Department of Mechanical Engineering and Industrial Construction, Universitat de Girona, Girona, Spain)
Carpóforo Vallellano (Department of Mechanical and Manufacturing Engineering, University of Seville, Seville, Spain)

Rapid Prototyping Journal

ISSN: 1355-2546

Article publication date: 20 June 2017

Abstract

Purpose

This paper aims to propose a functional methodology to produce cranial prostheses in polymeric sheet. Within the scope of rapid prototyping technologies, the single-point incremental forming (SPIF) process is used to demonstrate its capabilities to perform customized medical parts.

Design/methodology/approach

The methodology starts processing a patient’s computerized axial tomography (CAT) and follows with a computer-aided design and manufacture (CAD/CAM) procedure, which finally permits the successful manufacturing of a customized prosthesis for a specific cranial area.

Findings

The formability of a series of polymeric sheets is determined and the most restrictive material among them is selected for the fabrication of a specific partial cranial prosthesis following the required geometry. The final strain state at the outer surface of the prosthesis is analysed, showing the high potential of SPIF in manufacturing individualized cranial prostheses from polymeric sheet.

Originality/value

This paper proposes a complete methodology to design and manufacture polymer customized cranial prostheses from patients’ CATs using the novel SPIF technology. This is an application of a new class of materials to the manufacturing of medical prostheses by SPIF, which to this purpose has been mainly making use of metallic materials so far. Despite the use of polymers to this application is still to be validated from a medical point of view, transparent prostheses can already be of great interest in medical or engineering schools for teaching and research purposes.

Keywords

Acknowledgements

The authors wish to thank the Spanish Government for its financial support through the research projects DPI2015-64047-R and DPI2016-77156-R and the University of Girona (Spain) for the support provided by MPCUdG2016/036. The fourth author would also like to thank the Spanish Ministry of Education (grant FPU12/05402).

Citation

Centeno, G., Morales-Palma, D., Gonzalez-Perez-Somarriba, B., Bagudanch, I., Egea-Guerrero, J.J., Gonzalez-Perez, L.M., García-Romeu, M.L. and Vallellano, C. (2017), "A functional methodology on the manufacturing of customized polymeric cranial prostheses from CAT using SPIF", Rapid Prototyping Journal, Vol. 23 No. 4, pp. 771-780. https://doi.org/10.1108/RPJ-02-2016-0031

Publisher

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Emerald Publishing Limited

Copyright © 2017, Emerald Publishing Limited