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Morphology and chemical composition of dentin in permanent first molars with the diagnose MIH.

Artikel i vetenskaplig tidskrift
Författare Suzanne C B Heijs
Wolfram Dietz
Jörgen G Norén
Nynke G Blanksma
Birgitta Jälevik
Publicerad i Swedish dental journal
Volym 31
Nummer/häfte 4
Sidor 155-64
ISSN 0347-9994
Publiceringsår 2007
Publicerad vid Institutionen för odontologi
Sidor 155-64
Språk en
Länkar www.ncbi.nlm.nih.gov/entrez/query.f...
Ämnesord Child, Dental Caries, metabolism, pathology, Dental Enamel, chemistry, pathology, ultrastructure, Dentin, chemistry, pathology, ultrastructure, Electron Probe Microanalysis, Humans, Incisor, chemistry, pathology, ultrastructure, Microscopy, Electron, Scanning, Microscopy, Polarization, Molar, chemistry, pathology, ultrastructure, Tooth Demineralization, metabolism, pathology
Ämneskategorier Pedodonti, Morfologi

Sammanfattning

The purpose of this investigation was to study the morphology and distribution of some inorganic elements in dentin in first permanent molars from children with Molar-Incisor Hypomineralization (MIH). Sixty four tooth sections from thirty two children were examined in polarized light. Fifteen representative sections were selected for SEM/XRMA analysis; 5 were used for SEM analysis and 10 for XRMA analysis. No morphological changes in the dentin were revealed in polarized light microscopy (PLM). However, in all but two sections interglobular dentin was found. The SEM analyzes confirmed the findings of the PLM with no structural changes to be found in the dentin. The XRMA results showed a difference in the concentration of elements between dentin below normal and dentin below carious or hypomineralized enamel. Elements related to organic matter appeared with higher values in dentin below hypomineralized and carious enamel. The morphological and chemical findings in dentin below hypomineralized enamel imply that the odontoblasts are not affected in cases of MIH, but may be affected by hypocalcemia, reflected by the presence of interglobular dentin.

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