Morphological characterization and permeability of attrited human dentine
Objective: Dentine is a vital tissue that can be changed by physiological and pathological condition. The purpose of this study was to clarify the morphology and permeability of dentine that changed by wearing process. Methods: Twenty extracted human molars with enamel attrition and dentine was expo...
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th-mahidol.191702018-07-12T09:25:18Z Morphological characterization and permeability of attrited human dentine Pisol Senawongse Masayuki Otsuki Junji Tagami Ivar A. Mjör Mahidol University Tokyo Medical and Dental University University of Florida College of Dentistry Dentistry Objective: Dentine is a vital tissue that can be changed by physiological and pathological condition. The purpose of this study was to clarify the morphology and permeability of dentine that changed by wearing process. Methods: Twenty extracted human molars with enamel attrition and dentine was exposed and 20 intact human extracted third molars that had not reached occlusion were used. Ten teeth per each group were observed under light microscope (LM) and transmission electron microscope (TEM). Remaining 10 teeth per each group were subjected for evaluation of dentine permeability. Results: Under LM, the transparent dentine and reactionary dentine were found in the attrition group but were not found in the group unaffected by attrition. When the transparent dentine were examined under the TEM, it was found that dentinal tubules were partially or completely occluded by growth of peritubular dentine or by precipitation of needle-like or rhombohedral crystals in transparent dentine. In reactionary dentine, tubular dentine structures that were comparable to those in secondary physiologic dentine were observed whereas atubular dentine demonstrated occlusion of tubules by high mineral substances or by peritubular dentine under the TEM. Permeability of dentine from worn teeth was less than those from unoccluded teeth significantly. Conclusion: Change in dentine by wear resulted in the formation of reactionary dentine and transparent dentine that illustrated various types and degrees of tubular occlusion. These decrease the dentine permeability. © 2007 Elsevier Ltd. All rights reserved. 2018-07-12T02:25:18Z 2018-07-12T02:25:18Z 2008-01-01 Article Archives of Oral Biology. Vol.53, No.1 (2008), 14-19 10.1016/j.archoralbio.2007.07.010 00039969 2-s2.0-36849004472 https://repository.li.mahidol.ac.th/handle/123456789/19170 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=36849004472&origin=inward |
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Dentistry Pisol Senawongse Masayuki Otsuki Junji Tagami Ivar A. Mjör Morphological characterization and permeability of attrited human dentine |
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Objective: Dentine is a vital tissue that can be changed by physiological and pathological condition. The purpose of this study was to clarify the morphology and permeability of dentine that changed by wearing process. Methods: Twenty extracted human molars with enamel attrition and dentine was exposed and 20 intact human extracted third molars that had not reached occlusion were used. Ten teeth per each group were observed under light microscope (LM) and transmission electron microscope (TEM). Remaining 10 teeth per each group were subjected for evaluation of dentine permeability. Results: Under LM, the transparent dentine and reactionary dentine were found in the attrition group but were not found in the group unaffected by attrition. When the transparent dentine were examined under the TEM, it was found that dentinal tubules were partially or completely occluded by growth of peritubular dentine or by precipitation of needle-like or rhombohedral crystals in transparent dentine. In reactionary dentine, tubular dentine structures that were comparable to those in secondary physiologic dentine were observed whereas atubular dentine demonstrated occlusion of tubules by high mineral substances or by peritubular dentine under the TEM. Permeability of dentine from worn teeth was less than those from unoccluded teeth significantly. Conclusion: Change in dentine by wear resulted in the formation of reactionary dentine and transparent dentine that illustrated various types and degrees of tubular occlusion. These decrease the dentine permeability. © 2007 Elsevier Ltd. All rights reserved. |
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Mahidol University |
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Mahidol University Pisol Senawongse Masayuki Otsuki Junji Tagami Ivar A. Mjör |
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Pisol Senawongse Masayuki Otsuki Junji Tagami Ivar A. Mjör |
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Pisol Senawongse |
title |
Morphological characterization and permeability of attrited human dentine |
title_short |
Morphological characterization and permeability of attrited human dentine |
title_full |
Morphological characterization and permeability of attrited human dentine |
title_fullStr |
Morphological characterization and permeability of attrited human dentine |
title_full_unstemmed |
Morphological characterization and permeability of attrited human dentine |
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morphological characterization and permeability of attrited human dentine |
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2018 |
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https://repository.li.mahidol.ac.th/handle/123456789/19170 |
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1763494028056199168 |