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Micro- to Macroroughness of Additively Manufactured Titanium Implants in Terms of Coagulation and Contact Activation
Mid Sweden Univ, Sports Tech Res Ctr, SE-83125 Ostersund, Sweden..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Clinical Immunology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Oral and Maxillofacial Surgery.
Mid Sweden Univ, Sports Tech Res Ctr, SE-83125 Ostersund, Sweden..
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2017 (English)In: International Journal of Oral & Maxillofacial Implants, ISSN 0882-2786, E-ISSN 1942-4434, Vol. 32, no 3, p. 565-574Article in journal (Refereed) Published
Abstract [en]

Purpose: This study aimed to evaluate how as-built electron beam melting (EBM) surface properties affect the onset of blood coagulation. The properties of EBM-manufactured implant surfaces for placement have, until now, remained largely unexplored in literature. Implants with conventional designs and custom-made implants have been manufactured using EBM technology and later placed into the human body. Many of the conventional implants used today, such as dental implants, display modified surfaces to optimize bone ingrowth, whereas custom-made implants, by and large, have machined surfaces. However, titanium in itself demonstrates good material properties for the purpose of bone ingrowth. Materials and Methods: Specimens manufactured using EBM were selected according to their surface roughness and process parameters. EBM-produced specimens, conventional machined titanium surfaces, as well as PVC surfaces for control were evaluated using the slide chamber model. Results: A significant increase in activation was found, in all factors evaluated, between the machined samples and EBM-manufactured samples. The results show that EBM-manufactured implants with as-built surfaces augment the thrombogenic properties. Conclusion: EBM that uses Ti6Al4V powder appears to be a good manufacturing solution for load-bearing implants with bone anchorage. The as-built surfaces can be used "as is" for direct bone contact, although any surface treatment available for conventional implants can be performed on EBM-manufactured implants with a conventional design.

Place, publisher, year, edition, pages
QUINTESSENCE PUBLISHING CO INC , 2017. Vol. 32, no 3, p. 565-574
Keywords [en]
bone ingrowth, coagulation, customization, electron beam melting, surface roughness
National Category
Dentistry
Identifiers
URN: urn:nbn:se:uu:diva-330057DOI: 10.11607/jomi.5357ISI: 000404520600022OAI: oai:DiVA.org:uu-330057DiVA, id: diva2:1157689
Available from: 2017-11-16 Created: 2017-11-16 Last updated: 2017-11-16Bibliographically approved

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Hong, JaanThor, Andreas

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