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Article

A Multi-Criteria Assessment Strategy for 3D Printed Porous Polyetheretherketone (PEEK) Patient-Specific Implants for Orbital Wall Reconstruction

1
Clinic of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, CH-4031 Basel, Switzerland
2
Medical Additive Manufacturing Research Group (Swiss MAM), Department of Biomedical Engineering, University of Basel, CH-4123 Allschwil, Switzerland
3
Basel Institute for Clinical Epidemiology and Biostatistics, Department of Clinical Research, University Hospital Basel, CH-4031 Basel, Switzerland
4
Institute for Medical Engineering and Medical Informatics, University of Applied Sciences and Arts Northwestern Switzerland, CH-4132 Muttenz, Switzerland
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Hand Surgery, Cantonal Hospital Baselland, CH-4410 Liestal, Switzerland
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Department of Biomedical Engineering and Physics, Amsterdam UMC, University of Amsterdam, Amsterdam Movement Sciences, NL-1105 Amsterdam, The Netherlands
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Department of Mechanical and Process Engineering, University of Applied Sciences, DE-77652 Offenburg, Germany
*
Author to whom correspondence should be addressed.
Academic Editors: Samer Srouji and Gianrico Spagnuolo
J. Clin. Med. 2021, 10(16), 3563; https://doi.org/10.3390/jcm10163563
Received: 4 July 2021 / Revised: 2 August 2021 / Accepted: 10 August 2021 / Published: 13 August 2021
Pure orbital blowout fractures occur within the confines of the internal orbital wall. Restoration of orbital form and volume is paramount to prevent functional and esthetic impairment. The anatomical peculiarity of the orbit has encouraged surgeons to develop implants with customized features to restore its architecture. This has resulted in worldwide clinical demand for patient-specific implants (PSIs) designed to fit precisely in the patient’s unique anatomy. Material extrusion or Fused filament fabrication (FFF) three-dimensional (3D) printing technology has enabled the fabrication of implant-grade polymers such as Polyetheretherketone (PEEK), paving the way for a more sophisticated generation of biomaterials. This study evaluates the FFF 3D printed PEEK orbital mesh customized implants with a metric considering the relevant design, biomechanical, and morphological parameters. The performance of the implants is studied as a function of varying thicknesses and porous design constructs through a finite element (FE) based computational model and a decision matrix based statistical approach. The maximum stress values achieved in our results predict the high durability of the implants, and the maximum deformation values were under one-tenth of a millimeter (mm) domain in all the implant profile configurations. The circular patterned implant (0.9 mm) had the best performance score. The study demonstrates that compounding multi-design computational analysis with 3D printing can be beneficial for the optimal restoration of the orbital floor. View Full-Text
Keywords: blow-out; biocompatible materials; computer-aided design; finite element analysis; orbit; implant; orbital fracture; patient-specific modeling; printing; three-dimensional blow-out; biocompatible materials; computer-aided design; finite element analysis; orbit; implant; orbital fracture; patient-specific modeling; printing; three-dimensional
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MDPI and ACS Style

Sharma, N.; Welker, D.; Aghlmandi, S.; Maintz, M.; Zeilhofer, H.-F.; Honigmann, P.; Seifert, T.; Thieringer, F.M. A Multi-Criteria Assessment Strategy for 3D Printed Porous Polyetheretherketone (PEEK) Patient-Specific Implants for Orbital Wall Reconstruction. J. Clin. Med. 2021, 10, 3563. https://doi.org/10.3390/jcm10163563

AMA Style

Sharma N, Welker D, Aghlmandi S, Maintz M, Zeilhofer H-F, Honigmann P, Seifert T, Thieringer FM. A Multi-Criteria Assessment Strategy for 3D Printed Porous Polyetheretherketone (PEEK) Patient-Specific Implants for Orbital Wall Reconstruction. Journal of Clinical Medicine. 2021; 10(16):3563. https://doi.org/10.3390/jcm10163563

Chicago/Turabian Style

Sharma, Neha, Dennis Welker, Soheila Aghlmandi, Michaela Maintz, Hans-Florian Zeilhofer, Philipp Honigmann, Thomas Seifert, and Florian M. Thieringer. 2021. "A Multi-Criteria Assessment Strategy for 3D Printed Porous Polyetheretherketone (PEEK) Patient-Specific Implants for Orbital Wall Reconstruction" Journal of Clinical Medicine 10, no. 16: 3563. https://doi.org/10.3390/jcm10163563

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