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增材制造结合机械研磨制备的钴铬合金在酸性盐溶液中的金属离子释放行为

Metallic Ion Release Behaviors from Cobalt-Chromium Alloys Fabricated by Additive Manufacturing with Mechanical Grinding in an Acidic Saline Solution.

作者信息

Sakurai Naoto, Sawada Tomofumi, Kuwajima Yukinori, Yamanaka Kenta, Nomura Naoyuki, Kasahara Masaaki, Chiba Akihiko, Satoh Kazuro, Takemoto Shinji

机构信息

Division of Orthodontic, Department of Developmental Oral Health Science, School of Dentistry, Iwate Medical University, Iwate 020-8505, Japan.

Department of Biomedical Engineering, Iwate Medical University, Iwate 028-3694, Japan.

出版信息

Materials (Basel). 2025 Jan 17;18(2):432. doi: 10.3390/ma18020432.

DOI:10.3390/ma18020432
PMID:39859903
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11766514/
Abstract

This study aimed to investigate the release of metallic ions from cobalt-chromium (Co-Cr) alloys fabricated by additive manufacturing (AM) for comparison with dental casting. Co-Cr alloys were fabricated via AM using selective laser melting (SLM) and electron beam melting (EBM) in powder-bed fusion. Polished and mechanically ground specimens were prepared. Each specimen was analyzed using an electron probe microanalyzer (EPMA). Each specimen was immersed in an acidic saline solution for 7 days in accordance with ISO 10271: 2020. The EPMA indicated the segregation of some elements in the as-prepared SLM and EBM specimens, whereas the polished and ground specimens exhibited a homogenous elemental distribution. The total amount of ion release from the SLM and EBM specimens was confirmed to be less than 7 μg/cm, which was less than 42 μg/cm for the cast specimen. The polished and ground specimens exhibited an even lower ion release than the as-prepared specimens. The amount of ions released from the Co-Cr alloy was less than the 200 μg/cm² requirement of ISO 22674: 2022. Co-Cr alloys fabricated by SLM and EBM could provide superior corrosion resistance to cast specimens. AM could be a valuable method for fabricating appliances and denture frameworks in dentistry.

摘要

本研究旨在调查通过增材制造（AM）制备的钴铬（Co-Cr）合金中金属离子的释放情况，以便与牙科铸造进行比较。采用粉末床熔融中的选择性激光熔化（SLM）和电子束熔化（EBM）技术通过增材制造制备Co-Cr合金。制备了经过抛光和机械研磨的试样。使用电子探针微分析仪（EPMA）对每个试样进行分析。根据ISO 10271:2020，将每个试样浸入酸性盐溶液中7天。EPMA表明，在制备好的SLM和EBM试样中存在一些元素的偏析，而经过抛光和研磨的试样呈现出均匀的元素分布。经证实，SLM和EBM试样的离子释放总量小于7μg/cm，而铸造试样的这一数值为42μg/cm。经过抛光和研磨的试样比制备好的试样表现出更低的离子释放。Co-Cr合金释放的离子量低于ISO 22674:2022规定的200μg/cm²的要求。通过SLM和EBM制备的Co-Cr合金比铸造试样具有更好的耐腐蚀性。增材制造可能是牙科中制造矫治器和义齿基托的一种有价值的方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/68d8/11766514/3b87e2457e62/materials-18-00432-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/68d8/11766514/3b87e2457e62/materials-18-00432-g008.jpg
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Materials (Basel). 2022 Aug 23;15(17):5801. doi: 10.3390/ma15175801.
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Study on the Surface of Cobalt-Chromium Dental Alloys and Their Behavior in Oral Cavity as Cast Materials.钴铬牙科合金表面及其作为铸造材料在口腔中的行为研究。
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