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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...

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Autores principales: Kuczumow, Andrzej, Chałas, Renata, Nowak, Jakub, Lekki, Janusz, Sarna-Boś, Katarzyna, Smułek, Wojciech, Jarzębski, Maciej
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
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.
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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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