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Study on Rehardening of Demineralized Dentin with Pulp-capping Agents Using a New Hardness Determination System
https://osaka-dent.repo.nii.ac.jp/records/54
https://osaka-dent.repo.nii.ac.jp/records/54ec26c1d6-647d-4041-a229-72989a231ea5
名前 / ファイル | ライセンス | アクション |
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学位論文 (4.1 MB)
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論文内容要旨・審査結果要旨 (244.7 kB)
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Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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公開日 | 2016-08-01 | |||||
本文言語 | ||||||
言語 | eng | |||||
タイトル | ||||||
タイトル | Study on Rehardening of Demineralized Dentin with Pulp-capping Agents Using a New Hardness Determination System | |||||
著者 |
松田, 有之
× 松田, 有之× Matsuda, Tomoyuki |
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キーワード | ||||||
主題Scheme | Other | |||||
主題 | Knoop硬さ | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 覆髄剤 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 再石灰化 | |||||
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 | pulp-capping agent | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | 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: We measured the hardness of demineralized dentin over time using the Cariotester to determine the effectiveness of several types of pulp-capping agent for IPC. Methods: Extracted human molars were used to prepare dentin samples with a diameter of 10 mm and thickness of 2 mm. Sound dentin samples were immersed in lactic acid solution and were regarded as demineralized when the value obtained using the Cariotester was approximately 20 KNH. HY-Bond Temporary Cement Soft (Shofu), Neodyne-α (Neo Dental Chemical Products), Dycal (Dentsply), and Calcipex Plain II (Nippon Shika Yakuhin) with a 60% calcium hydroxide mixture were used as the pulp-capping agents in the present study. Each pulp-capping agent was applied to the surface of demineralized dentin and covered with base cement. After the base cement solidified, pulp-capped dentin samples and controls were divided into two groups: those placed in a container with 100% humidity and those immersed in remineralization solution, and stored at 37°C in a thermostatic chamber for 1 and 3 months. The hardness of the capping agent-applied region was then measured. Data were analyzed using a one-way analysis of variance and Tukeys test (α=0.05). Pulp-capping agent-applied surfaces were also observed under SEM. Results: The hardness of demineralized dentin increased with the application of Dycal, Calcipex Plain II, and the 60% calcium hydroxide mixture, and mineralized substance-like aggregates were deposited on the surface of and between collagen fibrils. It was suggested that the remineralization of demineralized dentin depended on the calcium hydroxide concentration contained in a pulp-capping agent. Conclusion: The hardness of demineralized dentin increased and remineralization features were noted following the application of a pulp-capping agent containing over 27% calcium hydroxide. |
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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 | 2014-03-07 | |||||
学位授与番号 | ||||||
学位授与番号 | 甲第730号 |