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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doaj-db90ee26e7bf47e69a866002fd4e05f32021-06-30T23:06:04ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-06-01226003600310.3390/ijms22116003Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel JunctionAndrzej Kuczumow0Renata Chałas1Jakub Nowak2Janusz Lekki3Katarzyna Sarna-Boś4Wojciech Smułek5Maciej Jarzębski6ComerLab Dorota Nowak, Radawiec Duży 196, 21-030 Motycz, PolandDepartment of Oral Medicine, Medical University of Lublin, 20-093 Lublin, PolandComerLab Dorota Nowak, Radawiec Duży 196, 21-030 Motycz, PolandHenryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Department of Applied Spectroscopy, 31-342 Krakow, PolandDepartment of Dental Prosthetics, Medical University of Lublin, 20-093 Lublin, PolandInstitute of Chemical Technology and Engineering, Poznan University of Technology, 60-965 Poznań, PolandDepartment of Physics and Biophysics, Poznań University of Life Sciences, 60-637 Poznań, PolandThe 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.https://www.mdpi.com/1422-0067/22/11/6003dental-enamel junction (DEJ)chemical microanalysismechanical propertiesoptical patternenergy of apatite transformation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Andrzej Kuczumow Renata Chałas Jakub Nowak Janusz Lekki Katarzyna Sarna-Boś Wojciech Smułek Maciej Jarzębski |
spellingShingle |
Andrzej Kuczumow Renata Chałas Jakub Nowak Janusz Lekki Katarzyna Sarna-Boś Wojciech Smułek Maciej Jarzębski Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel Junction International Journal of Molecular Sciences dental-enamel junction (DEJ) chemical microanalysis mechanical properties optical pattern energy of apatite transformation |
author_facet |
Andrzej Kuczumow Renata Chałas Jakub Nowak Janusz Lekki Katarzyna Sarna-Boś Wojciech Smułek Maciej Jarzębski |
author_sort |
Andrzej Kuczumow |
title |
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_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_sort |
novel approach to tooth chemistry. quantification of the dental-enamel junction |
publisher |
MDPI AG |
series |
International Journal of Molecular Sciences |
issn |
1661-6596 1422-0067 |
publishDate |
2021-06-01 |
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. |
topic |
dental-enamel junction (DEJ) chemical microanalysis mechanical properties optical pattern energy of apatite transformation |
url |
https://www.mdpi.com/1422-0067/22/11/6003 |
work_keys_str_mv |
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