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Antibacterial and Antifungal Activities of PMMAs Implanted Fluorine and/or Silver Ions by Plasma-Based Ion Implantation with Argon
https://osaka-dent.repo.nii.ac.jp/records/275
https://osaka-dent.repo.nii.ac.jp/records/27551bc7f44-b8fe-4fae-947c-8bedad077ed4
名前 / ファイル | ライセンス | アクション |
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学位論文 (32.3 MB)
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論文内容要旨・審査結果要旨 (262.7 kB)
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Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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公開日 | 2021-04-22 | |||||
本文言語 | ||||||
言語 | eng | |||||
タイトル | ||||||
タイトル | Antibacterial and Antifungal Activities of PMMAs Implanted Fluorine and/or Silver Ions by Plasma-Based Ion Implantation with Argon | |||||
著者 |
加々美, 恵一
× 加々美, 恵一× Kagami, Keiichi |
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キーワード | ||||||
主題Scheme | Other | |||||
主題 | argon | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | fluorine | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | silver | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | PMMA | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | plasma-based ion implantation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | surface modification | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | antibacterial effect | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | antifungal effect | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||
資源タイプ | doctoral thesis | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The purpose of this study was to examine the anti-oral microorganism efects of fluorine and/or silver ions implanted into acrylic resin (PMMA) using plasma-based ion implantation (PBII) with argon gas. The experimental PMMA specimens were implanted with F and Ag ions alone or simultaneously by the PBII method using Ar or Ar/F2 gases and Ag mesh. The surface characteristics were evaluated by X-ray photoelectron spectroscopy (XPS), contact angle measurements, and atomic force microscopy (AFM). Moreover, the antibacterial activity against Streptococcus mutans (S. mutans) and the antifungal activity against Candida albicans (C. albicans) were examined by the adenosine‐5’‐triphosphate (ATP) emission luminescence method. XPS spectra of the modified specimens revealed peaks due to F in the Ar/F and the Ar/F+Ag groups, and due to Ag in the Ar+Ag and the Ar/F+Ag groups. The water contact angle increased significantly due to the implantation of Ar, F, and Ag. In the AFM observations, the surface roughness of the Ar/F and the Ar/F+Ag groups increased significantly by less than 5 nanometers. The presence of F and Ag was found to inhibit S. mutans growth in the Ar+Ag and the Ar/F+Ag groups. However, this method provided no significant antifungal activity against C. albicans. | |||||
学位名 | ||||||
学位名 | 博士(歯学) | |||||
学位授与機関 | ||||||
学位授与機関識別子Scheme | kakenhi | |||||
学位授与機関識別子 | 34408 | |||||
学位授与機関名 | 大阪歯科大学 | |||||
学位授与年月日 | ||||||
学位授与年月日 | 2021-03-05 | |||||
学位授与番号 | ||||||
学位授与番号 | 甲第888号 |