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The effect of fluorosis on human teeth under light microscopy: A cross-sectional study
BACKGROUND: Fluoride is needed for the normal development of bone and teeth; in high levels, it affects developing teeth and bone. Dental fluorosis (DF) is caused by ingestion of excess fluoride mainly through drinking water. AIM: The present study aims to observe and understand the histological cha...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5763854/ https://www.ncbi.nlm.nih.gov/pubmed/29391706 http://dx.doi.org/10.4103/jomfp.JOMFP_247_16 |
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author | Ramesh, Maya Narasimhan, Malathi Krishnan, Ramesh Aruna, Rita Mary Kuruvilla, Sarah |
author_facet | Ramesh, Maya Narasimhan, Malathi Krishnan, Ramesh Aruna, Rita Mary Kuruvilla, Sarah |
author_sort | Ramesh, Maya |
collection | PubMed |
description | BACKGROUND: Fluoride is needed for the normal development of bone and teeth; in high levels, it affects developing teeth and bone. Dental fluorosis (DF) is caused by ingestion of excess fluoride mainly through drinking water. AIM: The present study aims to observe and understand the histological changes of fluorosed teeth under light microscope (LM). MATERIALS AND METHODS: Teeth which were indicated for extractions for orthodontic or periodontal problems were selected. Thirty extracted teeth were selected with varying degrees of DF based on modified Dean's fluorosis index. Ground sections of these teeth were prepared and the sections were studied under binocular LM. Photomicrographs were taken under high power objective using 15 megapixels Nikon camera. RESULTS AND CONCLUSION: Qualitative histologic changes in different grades of fluorosed teeth were evaluated in enamel, dentin, cementum and between their junctions. Fluoride interacts with enamel in both mineral phases and organic macromolecules by strong ionic and hydrogen bonds resulting in incomplete crystal growth at prism peripheries. This presents as hypomineralization of enamel and dentin, increased interglobular dentin, increased secondary curvatures and changes in cementum such as diffuse cementodentinal junction and increased thickness of Tomes’ granular layer. Changes in the structure of the teeth with Dean's index below 2 and teeth with Dean's index of 2 and above were compared using Chi-square test. P value was found to be highly significant being 0.00047. Many of the features of dental fluorosis seen in the present study under light microscope are comparable to those results studied under specialized microscopes. |
format | Online Article Text |
id | pubmed-5763854 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Medknow Publications & Media Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-57638542018-02-01 The effect of fluorosis on human teeth under light microscopy: A cross-sectional study Ramesh, Maya Narasimhan, Malathi Krishnan, Ramesh Aruna, Rita Mary Kuruvilla, Sarah J Oral Maxillofac Pathol Original Article BACKGROUND: Fluoride is needed for the normal development of bone and teeth; in high levels, it affects developing teeth and bone. Dental fluorosis (DF) is caused by ingestion of excess fluoride mainly through drinking water. AIM: The present study aims to observe and understand the histological changes of fluorosed teeth under light microscope (LM). MATERIALS AND METHODS: Teeth which were indicated for extractions for orthodontic or periodontal problems were selected. Thirty extracted teeth were selected with varying degrees of DF based on modified Dean's fluorosis index. Ground sections of these teeth were prepared and the sections were studied under binocular LM. Photomicrographs were taken under high power objective using 15 megapixels Nikon camera. RESULTS AND CONCLUSION: Qualitative histologic changes in different grades of fluorosed teeth were evaluated in enamel, dentin, cementum and between their junctions. Fluoride interacts with enamel in both mineral phases and organic macromolecules by strong ionic and hydrogen bonds resulting in incomplete crystal growth at prism peripheries. This presents as hypomineralization of enamel and dentin, increased interglobular dentin, increased secondary curvatures and changes in cementum such as diffuse cementodentinal junction and increased thickness of Tomes’ granular layer. Changes in the structure of the teeth with Dean's index below 2 and teeth with Dean's index of 2 and above were compared using Chi-square test. P value was found to be highly significant being 0.00047. Many of the features of dental fluorosis seen in the present study under light microscope are comparable to those results studied under specialized microscopes. Medknow Publications & Media Pvt Ltd 2017 /pmc/articles/PMC5763854/ /pubmed/29391706 http://dx.doi.org/10.4103/jomfp.JOMFP_247_16 Text en Copyright: © 2017 Journal of Oral and Maxillofacial Pathology http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms. |
spellingShingle | Original Article Ramesh, Maya Narasimhan, Malathi Krishnan, Ramesh Aruna, Rita Mary Kuruvilla, Sarah The effect of fluorosis on human teeth under light microscopy: A cross-sectional study |
title | The effect of fluorosis on human teeth under light microscopy: A cross-sectional study |
title_full | The effect of fluorosis on human teeth under light microscopy: A cross-sectional study |
title_fullStr | The effect of fluorosis on human teeth under light microscopy: A cross-sectional study |
title_full_unstemmed | The effect of fluorosis on human teeth under light microscopy: A cross-sectional study |
title_short | The effect of fluorosis on human teeth under light microscopy: A cross-sectional study |
title_sort | effect of fluorosis on human teeth under light microscopy: a cross-sectional study |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5763854/ https://www.ncbi.nlm.nih.gov/pubmed/29391706 http://dx.doi.org/10.4103/jomfp.JOMFP_247_16 |
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