材料科学技术(英文版)2022，Vol.128Issue(33) ：118-132.

Oral microbiota accelerates corrosion of 316L stainless steel for orthodontic applications

Qingfu Wang Mingxing Zhang Chuntian Yang Yi Yang Enze Zhou Pan Liu Daiqiang Jin Dake Xu Lin Wu Fuhui Wang
材料科学技术(英文版)2022，Vol.128Issue(33) ：118-132.
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Oral microbiota accelerates corrosion of 316L stainless steel for orthodontic applications

Qingfu Wang 1Mingxing Zhang 2Chuntian Yang 2Yi Yang 2Enze Zhou 2Pan Liu 2Daiqiang Jin 3Dake Xu 2Lin Wu 3Fuhui Wang2
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作者信息

  • 1. School and Hospital of Stomatology,China Medical University,Liaoning Provincial Key Laboratory of Oral Diseases,Shenyang 110001,China;Department of Oral Implantology,Tianjin Stomatological Hospital,School of Medicine,Nankai University&Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction,Tianjin 300041,China
  • 2. Shenyang National Laboratory for Materials Science,Northeastern University,Shenyang 110819,China;Electrobiomaterials Institute,Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),Northeastern University,Shenyang 110819,China
  • 3. School and Hospital of Stomatology,China Medical University,Liaoning Provincial Key Laboratory of Oral Diseases,Shenyang 110001,China
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Abstract

In this work,microbiologically influenced corrosion(MIC)of 316L stainless steel(SS)caused by oral mi-crobiota was investigated with HOMINGS 16S rRNA gene sequencing technology,and electrochemical and surface analysis techniques.The results showed that oral microbiota from different subjects developed multi-species biofilms with significant differences in structure and composition of bacteria strains on the 316L SS coupons.In the presence of oral microbiota,more severe pitting corrosion and faster dissolu-tion of metallic ions including Ni and Cr were observed.The biofilm considerably decreased the pitting potential of 316L SS from 1268.0±29.1 mV vs.SCE(abiotic control)to less than 500 mV vs.SCE.The corrosion current density in the presence of oral microbiota from subject 1(115.3±83.3 nA cm-2)and subject 2(184.4±162.0 nA cm-2)was at least 4 times more than that in the abiotic medium(28.0±2.3 nA cm-2).The electroactive microorganisms with the potential to facilitate corrosion via extracellular electron transfer found in oral microbiota may be mainly responsible for the accelerated corrosion.

Key words

Oral microbiota/Microbiologically influenced corrosion/Stainless steel/Electroactive microorganism

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基金项目

国家自然科学基金(U2006219)

国家自然科学基金(51871050)

国家自然科学基金(51901039)

辽宁省自然科学基金(20180510041)

Liaoning Revitalization Talents Program(XLYC1907158)

Fundamental Research Funds for the Central Universities of the Ministry of Education of China(N180205021)

Fundamental Research Funds for the Central Universities of the Ministry of Education of China(N180203019)

Fundamental Research Funds for the Central Universities of the Ministry of Education of China(N2002019)

出版年

2022
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
参考文献量72
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