title: Tantalum Nitride-Decorated Titanium with Enhanced Resistance to Microbiologically Induced Corrosion and Mechanical Property for Dental Application.
abstract: Microbiologically induced corrosion (MIC) of metallic devices/implants in the oral region is one major cause of implant failure and metal allergy in patients. Therefore, it is crucial to develop practical approaches which can effectively prevent MIC for broad clinical applications of these materials. In the present work, tantalum nitride (TaN)-decorated titanium with promoted bio-corrosion and mechanical property was firstly developed via depositing TaN layer onto pure Ti using magnetron sputtering. The microstructure and chemical constituent of TaN coatings were characterized, and were found to consist of a hard fcc-TaN outer layer. Besides, the addition of TaN coatings greatly increased the hardness and modulus of pristine Ti from 2.54 ± 0.20 to 29.88 ± 2.59 GPa, and from 107.19 ± 6.98 to 295.46 ± 19.36 GPa, respectively. Potentiodynamic polarization and electrochemical impedance spectroscopy studies indicated that TaN coating exhibited higher MIC resistance in comparison to bare Ti and TiN-coated coating in two bacteria-containing artificial saliva solutions. Moreover, the biofilm experiment showed that the TaN-decorated Ti sample possessed good antibacterial performance. The SEM and XPS results after biofilm removal demonstrated that TaN film remained its integrity and stability, while TiN layer detached from Ti surface in the bio-corrosion tests, demonstrating the anti-MIC behavior and the strong binding property of TaN coating to Ti substrate. Considering all these results, TaN-decorated Ti material exhibits the optimal comprehensive performance and holds great potential as implant material for dental applications.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, School and Hospital of Stomatology, Peking University Beijing 100081, China; 2nd Dental Center, School and Hospital of Stomatology, Peking University Beijing 100081, China.
authors.forename: Yifei
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, School and Hospital of Stomatology, Peking University Beijing 100081, China; 2nd Dental Center, School and Hospital of Stomatology, Peking University Beijing 100081, China.
authors.forename: Yunfei
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, School and Hospital of Stomatology, Peking University Beijing 100081, China; 2nd Dental Center, School and Hospital of Stomatology, Peking University Beijing 100081, China.
authors.forename: Yongliang
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University Beijing 100038, China.
authors.forename: Lixin
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Stomatology, Aviation General Hospital of China Medical University and Beijing Institute of Translational Medicine, Chinese Academy of Science, Beijing 100012, China.
authors.forename: Yanjie
authors.initials: Y
authors.lastname: Bai
authors.affiliation: Department of Stomatology, Aviation General Hospital of China Medical University and Beijing Institute of Translational Medicine, Chinese Academy of Science, Beijing 100012, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, School and Hospital of Stomatology, Peking University Beijing 100081, China.
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Xiong
authors.affiliation: Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Cheng
authors.affiliation: 2nd Dental Center, School and Hospital of Stomatology, Peking University Beijing 100081, China.
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Tang
authors.affiliation: Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Deng
authors.affiliation: Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, School and Hospital of Stomatology, Peking University Beijing 100081, China; 2nd Dental Center, School and Hospital of Stomatology, Peking University Beijing 100081, China; Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.
authors.forename: Shicheng
authors.initials: S
authors.lastname: Wei
mesh_terms: D016924:Actinomyces viscosus / Q000502:physiology*; D018441:Biofilms; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D003343:Corrosion; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry*; D058266:Dielectric Spectroscopy; D055119:Elastic Modulus; D006244:Hardness; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D017672:Nitrogen Compounds / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D016966:Porphyromonas gingivalis / Q000502:physiology*; D013295:Streptococcus mutans / Q000502:physiology*; D013314:Stress, Mechanical; D013499:Surface Properties; D013635:Tantalum / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D020099:Coated Materials, Biocompatible; D015921:Dental Implants; D003764:Dental Materials; D017672:Nitrogen Compounds; D013635:Tantalum; D014025:Titanium