Mechanical behaviour of composite calcium phosphate–titanium cranial implants: Effects of loading rate and design

Lewin, Susanne; Åberg, Jonas; Neuhaus, Dominique; Engqvist, Håkan; Ferguson, Stephen J.; Öhman‐Mägi, Caroline; Helgason, Benedikt; Persson, Cecilia

doi:10.1016/j.jmbbm.2020.103701

Cited by 16 publications

(8 citation statements)

References 35 publications

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“…On the other hand, the strength of bioactive glass-fiber-reinforced composite cranial implants was reported at around 175 ± 101 N [52]. In composite material, especially titanium-reinforced calcium phosphate cranial implants, peak loads in the range of 457-808 N have been reported [53][54][55].…”

Section: Discussionmentioning

confidence: 99%

Quantitative Assessment of Point-of-Care 3D-Printed Patient-Specific Polyetheretherketone (PEEK) Cranial Implants

Sharma

Aghlmandi

Dalcanale

et al. 2021

IJMS

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Recent advancements in medical imaging, virtual surgical planning (VSP), and three-dimensional (3D) printing have potentially changed how today’s craniomaxillofacial surgeons use patient information for customized treatments. Over the years, polyetheretherketone (PEEK) has emerged as the biomaterial of choice to reconstruct craniofacial defects. With advancements in additive manufacturing (AM) systems, prospects for the point-of-care (POC) 3D printing of PEEK patient-specific implants (PSIs) have emerged. Consequently, investigating the clinical reliability of POC-manufactured PEEK implants has become a necessary endeavor. Therefore, this paper aims to provide a quantitative assessment of POC-manufactured, 3D-printed PEEK PSIs for cranial reconstruction through characterization of the geometrical, morphological, and biomechanical aspects of the in-hospital 3D-printed PEEK cranial implants. The study results revealed that the printed customized cranial implants had high dimensional accuracy and repeatability, displaying clinically acceptable morphologic similarity concerning fit and contours continuity. From a biomechanical standpoint, it was noticed that the tested implants had variable peak load values with discrete fracture patterns and failed at a mean (SD) peak load of 798.38 ± 211.45 N. In conclusion, the results of this preclinical study are in line with cranial implant expectations; however, specific attributes have scope for further improvements.

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Section: Discussionmentioning

confidence: 99%

Quantitative Assessment of Point-of-Care 3D-Printed Patient-Specific Polyetheretherketone (PEEK) Cranial Implants

Sharma

Aghlmandi

Dalcanale

et al. 2021

IJMS

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“…There are only a few experimental studies that have tested cranial implants under impact loading and these are not on PEEK but on hydroxyapatite cement cranial implants, 22 titanium, 23 and calcium phosphate–titanium 24 materials. To the authors' knowledge, this is the first study presenting results on printed PEEK cranial implants under this type of loading.…”

Section: Resultsmentioning

confidence: 99%

Powder Bed Fusion Versus Material Extrusion: A Comparative Case Study on Polyether-Ether-Ketone Cranial Implants

Liu

Nan

Davies

et al. 2023

3D Printing and Additive Manufacturing

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As the choice of additive manufacturing (AM) technologies is becoming wider with reliable processes and a wider range of materials, the selection of the right technology to fabricate a certain product is becoming increasingly difficult from a technical and cost perspective. In this study polyether-ether-ketone cranial implants were manufactured by two AM techniques: powder bed fusion (PBF) and fused filament fabrication (FFF) and their dimensional accuracy, compression performance, and drop tower impact behavior were evaluated and compared. The results showed that both types of specimens differed from the original computer-aided design; although the origin of the deviation was different, the PBF samples were slightly inaccurate owing to the printing process where the accuracy of the FFF samples was influenced by postprocessing and removal of the scaffolds. The cranial implants fabricated using the FFF method absorbed more energy during the compression and impact tests in comparison with the PBF process. The failure mechanisms revealed that FFF samples have a higher ability to deform and a more consistent failure mechanisms, with the damage localized around the puncture head region. The brittle nature of the PBF samples, a feature observed with other polymers as well, led to complete failure of the cranial implants into several pieces.

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“…Ti alloys. Lewin et al 16,17 investigated the effect of different pore shapes and different printing techniques on the mechanical properties of the additively manufactured Ti-6Al-4V meshes implanted in cranial bone. On the one hand, they compared the mechanical properties of two Ti meshes (D1 and D2) with different pore shapes and showed that the quasistatic applied pressure causes the D2 structure to fracture after 20 mm of deformation, while the D1 structure is only partially deformed.…”

Section: Reviewmentioning

confidence: 99%

Research progress and perspective of metallic implant biomaterials for craniomaxillofacial surgeries

Li,

Hao,

Liu

2024

Biomater. Sci.

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Mechanical behaviour of composite calcium phosphate–titanium cranial implants: Effects of loading rate and design

Cited by 16 publications

References 35 publications

Quantitative Assessment of Point-of-Care 3D-Printed Patient-Specific Polyetheretherketone (PEEK) Cranial Implants

Quantitative Assessment of Point-of-Care 3D-Printed Patient-Specific Polyetheretherketone (PEEK) Cranial Implants

Powder Bed Fusion Versus Material Extrusion: A Comparative Case Study on Polyether-Ether-Ketone Cranial Implants

Research progress and perspective of metallic implant biomaterials for craniomaxillofacial surgeries

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