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レジン添加型MTA配合覆髄剤の有効性の検討
https://osaka-dent.repo.nii.ac.jp/records/270
https://osaka-dent.repo.nii.ac.jp/records/2701b1dfaee-6f71-458d-a793-ccfc91258495
| 名前 / ファイル | ライセンス | アクション |
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論文内容要旨・審査結果 (197.9 kB)
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学位論文 (943.7 kB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||||||
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| 公開日 | 2020-10-28 | |||||||||||
| 本文言語 | ||||||||||||
| 言語 | eng | |||||||||||
| タイトル | ||||||||||||
| タイトル | Study on Rehardening of Demineralized Dentin with the Resin-modified Pulp-capping Agents Containing MTA | |||||||||||
| 言語 | en | |||||||||||
| タイトル | ||||||||||||
| タイトル | レジン添加型MTA配合覆髄剤の有効性の検討 | |||||||||||
| 言語 | ja | |||||||||||
| 著者 |
津谷, 佳代
× 津谷, 佳代
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| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Knoop hardness | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Resin modified pulp-capping agent | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | MTA, remineralization | |||||||||||
| 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 | Purpose Based on the concept of minimal intervention (MI), temporary indirect pulp capping (IPC) is used to preserve the deep parts of dentin adjacent to the pulp and avoid pulp exposure when caries advances deep into the dentin close to the dental pulp. In this study, we used Cariotester to measure the Knoop hardness of dentin samples, and examined the effects of resin-modified pulp-capping agents containing MTA on softened dentin. Methods We measured the hardness on the side of the enamel of dentin samples with Cariotester, and used those with enamel side hardness of around 60 KNH as healthy dentin samples. We decalcified the healthy samples according to the method of Matsuda, et al., and used those whose hardness decreased to around 20 KNH as softened dentin samples. As pulp-capping agents, we applied TMR-MTA cement and NEX MTA cement, which are conventional MTA cements, and TheraCal LC and Super MTA Paste, which are resin-modified pulp-capping agents containing MTA, on softened dentin samples and coated each with base cement to use them as the pulp-capping samples. We measured the Knoop hardness of the softened dentin after storing the prepared pulp-capping samples in a container at 100% humidity for 1 month and 3 months. We prepared three samples for each condition, and subjected the obtained values to statistical analysis using one-way analysis of variance and Tukey’s test (p < 0.001). Results After application of pulp-capping agents, the Knoop hardness was 32.8 ± 2.7 KNH after 1 month and 33.2 ± 0.4 KNH after 3 months in the TMR group. The hardness values improved significantly after 1 month and 3 months compared to the softened dentin samples, but were significantly lower than those of the healthy samples. In the NEX group, the hardness was 41.1 ± 2.3 KNH after 1 month and 41.6 ± 4.0 KNH after 3 months. The hardness values improved significantly after 1 month and 3 months compared to the softened dentin samples, but were significantly lower than those of the healthy samples. In the TCL group, the hardness was 20.1 ± 0.5 KNH after 1 month and 27.7 ± 4.4 KNH after 3 months. There was no significant difference in hardness after 1 month or 3 months compared to the softened dentin samples, and the values were significantly lower than those of the healthy samples. In the SMP group, the hardness was 56.5 ± 5.9 KNH after 1 month and 62.0 ± 2.5 KNH after 3 months. The hardness improved significantly after 1 month and 3 months compared to the softened dentin samples. Compared to the healthy samples, hardness improved to a level where there was no significant difference both after 1 month and 3 months. The results of this experiment showed that application of resin-modified pulp-capping agents containing MTA on softened dentin induced recalcification and hardened the softened dentin. Conclusion These results suggested the effectiveness of resin-modified pulp-capping agents containing MTA for hardening softened dentin. |
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| 言語 | en | |||||||||||
| 学位名 | ||||||||||||
| 言語 | ja | |||||||||||
| 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 | |||||||||||
| 言語 | ja | |||||||||||
| 学位授与機関名 | 大阪歯科大学 | |||||||||||
| 言語 | en | |||||||||||
| 学位授与機関名 | Osaka Dental University | |||||||||||
| 学位授与年月日 | ||||||||||||
| 学位授与年月日 | 2020-09-23 | |||||||||||
| 学位授与番号 | ||||||||||||
| 学位授与番号 | 乙第1628号 | |||||||||||
