The permeability of the dentine and other tissues that are exposed at the tip of a rat incisor
The tissues that form the incisal surface of a rat incisor include dentine, an atubular calcified tissue which lines the last-formed dentine, and calcified pulp remnants. The permeability of these tissues was investigated in vitro and in vivo using Evans blue dye. The incisal surface was prepared by...
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th-mahidol.258982018-09-07T16:24:17Z The permeability of the dentine and other tissues that are exposed at the tip of a rat incisor K. Vongsavan N. Vongsavan B. Matthews Mahidol University University of Bristol, Faculty of Medicine and Dentistry Biochemistry, Genetics and Molecular Biology Dentistry Medicine The tissues that form the incisal surface of a rat incisor include dentine, an atubular calcified tissue which lines the last-formed dentine, and calcified pulp remnants. The permeability of these tissues was investigated in vitro and in vivo using Evans blue dye. The incisal surface was prepared by etching it with acid or removing 1 mm by fracturing or with a diamond disc followed by etching. In some cases, 1.5-3.0 mm was removed to expose the soft tissue of the pulp. The dye was applied for 30 min, then longitudinal sections of the crown were cut and examined microscopically to determine the extent to which the dye had diffused into the underlying tissues. In only those teeth in which the dye had been applied direct to the pulpal soft tissue could any be detected below the exposed tooth surface. In previous experiments, it was found that both cat and human dentines were freely permeable to Evans blue when they were tested in vitro. It is concluded that the dentine and other tissues that form the incisal surface of a rat incisor are less permeable than cat or human dentine. © 2000 Elsevier Science Ltd. 2018-09-07T09:09:24Z 2018-09-07T09:09:24Z 2000-01-01 Article Archives of Oral Biology. Vol.45, No.11 (2000), 927-930 10.1016/S0003-9969(00)00078-9 00039969 2-s2.0-0033808215 https://repository.li.mahidol.ac.th/handle/123456789/25898 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0033808215&origin=inward |
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Biochemistry, Genetics and Molecular Biology Dentistry Medicine K. Vongsavan N. Vongsavan B. Matthews The permeability of the dentine and other tissues that are exposed at the tip of a rat incisor |
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The tissues that form the incisal surface of a rat incisor include dentine, an atubular calcified tissue which lines the last-formed dentine, and calcified pulp remnants. The permeability of these tissues was investigated in vitro and in vivo using Evans blue dye. The incisal surface was prepared by etching it with acid or removing 1 mm by fracturing or with a diamond disc followed by etching. In some cases, 1.5-3.0 mm was removed to expose the soft tissue of the pulp. The dye was applied for 30 min, then longitudinal sections of the crown were cut and examined microscopically to determine the extent to which the dye had diffused into the underlying tissues. In only those teeth in which the dye had been applied direct to the pulpal soft tissue could any be detected below the exposed tooth surface. In previous experiments, it was found that both cat and human dentines were freely permeable to Evans blue when they were tested in vitro. It is concluded that the dentine and other tissues that form the incisal surface of a rat incisor are less permeable than cat or human dentine. © 2000 Elsevier Science Ltd. |
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Mahidol University |
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Mahidol University K. Vongsavan N. Vongsavan B. Matthews |
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K. Vongsavan N. Vongsavan B. Matthews |
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K. Vongsavan |
title |
The permeability of the dentine and other tissues that are exposed at the tip of a rat incisor |
title_short |
The permeability of the dentine and other tissues that are exposed at the tip of a rat incisor |
title_full |
The permeability of the dentine and other tissues that are exposed at the tip of a rat incisor |
title_fullStr |
The permeability of the dentine and other tissues that are exposed at the tip of a rat incisor |
title_full_unstemmed |
The permeability of the dentine and other tissues that are exposed at the tip of a rat incisor |
title_sort |
permeability of the dentine and other tissues that are exposed at the tip of a rat incisor |
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2018 |
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