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Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel Junction
The dentin-enamel junction (DEJ) is known for its special role in teeth. Several techniques were applied for the investigation of the DEJ in human sound molar teeth. The electron (EPMA) and proton (PIXE) microprobes gave consistent indications about the variability of elemental concentrations on thi...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8199634/ https://www.ncbi.nlm.nih.gov/pubmed/34199407 http://dx.doi.org/10.3390/ijms22116003 |
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author | Kuczumow, Andrzej Chałas, Renata Nowak, Jakub Lekki, Janusz Sarna-Boś, Katarzyna Smułek, Wojciech Jarzębski, Maciej |
author_facet | Kuczumow, Andrzej Chałas, Renata Nowak, Jakub Lekki, Janusz Sarna-Boś, Katarzyna Smułek, Wojciech Jarzębski, Maciej |
author_sort | Kuczumow, Andrzej |
collection | PubMed |
description | The dentin-enamel junction (DEJ) is known for its special role in teeth. Several techniques were applied for the investigation of the DEJ in human sound molar teeth. The electron (EPMA) and proton (PIXE) microprobes gave consistent indications about the variability of elemental concentrations on this boundary. The locally increased and oscillating concentrations of Mg and Na were observed in the junction, in the layer adhering to the enamel and covering roughly half of the DEJ width. The chemical results were compared with the optical profiles of the junction. Our chemical and optical results were next compared with the micromechanical results (hardness, elastic modulus, friction coefficient) available in the world literature. A strong correlation of both result sets was proven, which testifies to the self-affinity of the junction structures for different locations and even for different kinds of teeth and techniques applied for studies. Energetic changes in tooth strictly connected with crystallographic transformations were calculated, and the minimum energetic status was discovered for DEJ zone. Modeling of both walls of the DEJ from optical data was demonstrated. Comparing the DEJ in human teeth with the same structure found in dinosaur, shark, and alligator teeth evidences the universality of dentin enamel junction in animal world. The paper makes a contribution to better understanding the joining of the different hard tissues. |
format | Online Article Text |
id | pubmed-8199634 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-81996342021-06-14 Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel Junction Kuczumow, Andrzej Chałas, Renata Nowak, Jakub Lekki, Janusz Sarna-Boś, Katarzyna Smułek, Wojciech Jarzębski, Maciej Int J Mol Sci Article The dentin-enamel junction (DEJ) is known for its special role in teeth. Several techniques were applied for the investigation of the DEJ in human sound molar teeth. The electron (EPMA) and proton (PIXE) microprobes gave consistent indications about the variability of elemental concentrations on this boundary. The locally increased and oscillating concentrations of Mg and Na were observed in the junction, in the layer adhering to the enamel and covering roughly half of the DEJ width. The chemical results were compared with the optical profiles of the junction. Our chemical and optical results were next compared with the micromechanical results (hardness, elastic modulus, friction coefficient) available in the world literature. A strong correlation of both result sets was proven, which testifies to the self-affinity of the junction structures for different locations and even for different kinds of teeth and techniques applied for studies. Energetic changes in tooth strictly connected with crystallographic transformations were calculated, and the minimum energetic status was discovered for DEJ zone. Modeling of both walls of the DEJ from optical data was demonstrated. Comparing the DEJ in human teeth with the same structure found in dinosaur, shark, and alligator teeth evidences the universality of dentin enamel junction in animal world. The paper makes a contribution to better understanding the joining of the different hard tissues. MDPI 2021-06-02 /pmc/articles/PMC8199634/ /pubmed/34199407 http://dx.doi.org/10.3390/ijms22116003 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Kuczumow, Andrzej Chałas, Renata Nowak, Jakub Lekki, Janusz Sarna-Boś, Katarzyna Smułek, Wojciech Jarzębski, Maciej Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel Junction |
title | Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel Junction |
title_full | Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel Junction |
title_fullStr | Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel Junction |
title_full_unstemmed | Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel Junction |
title_short | Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel Junction |
title_sort | novel approach to tooth chemistry. quantification of the dental-enamel junction |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8199634/ https://www.ncbi.nlm.nih.gov/pubmed/34199407 http://dx.doi.org/10.3390/ijms22116003 |
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