Polymerisation Shrinkage Profiling of Dental Composites using Optical Fibre Sensing and their Correlation with Degree of Conversion and Curing Rate

Traditional polymerisation shrinkage (PS) measurement systems measure average PS of dental composites, but the true local PS varies along the length and breadth of the composite. The PS depends on the curing light intensity distribution, resultant degree of conversion (DOC) and the curing rate. In t...

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Autores principales: Rajan, Ginu, Raju, Raju, Jinachandran, Sagar, Farrar, Paul, Xi, Jiangtao, Prusty, B. Gangadhara
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395615/
https://www.ncbi.nlm.nih.gov/pubmed/30816275
http://dx.doi.org/10.1038/s41598-019-40162-z
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author Rajan, Ginu
Raju, Raju
Jinachandran, Sagar
Farrar, Paul
Xi, Jiangtao
Prusty, B. Gangadhara
author_facet Rajan, Ginu
Raju, Raju
Jinachandran, Sagar
Farrar, Paul
Xi, Jiangtao
Prusty, B. Gangadhara
author_sort Rajan, Ginu
collection PubMed
description Traditional polymerisation shrinkage (PS) measurement systems measure average PS of dental composites, but the true local PS varies along the length and breadth of the composite. The PS depends on the curing light intensity distribution, resultant degree of conversion (DOC) and the curing rate. In this paper, optical fibre Bragg grating (FBG) sensing based technology is used to measure the linear post-gel PS at multiple locations within dental composite specimens, and is correlated with DOC and curing rate. A commercial dental composite is used, and its post-gel PS and DOC are mapped using embedded fibre Bragg grating sensors at different curing conditions. The distance between the curing lamp and the composite specimen is varied which resulted in different intensity distribution across the specimen. The effect of curing light intensity distribution on PS, curing rate and DOC are investigated for demonstrating a relationship among them. It is demonstrated that FBG sensing method is an effective method to accurately profiling post-gel PS across the specimen.
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spelling pubmed-63956152019-03-04 Polymerisation Shrinkage Profiling of Dental Composites using Optical Fibre Sensing and their Correlation with Degree of Conversion and Curing Rate Rajan, Ginu Raju, Raju Jinachandran, Sagar Farrar, Paul Xi, Jiangtao Prusty, B. Gangadhara Sci Rep Article Traditional polymerisation shrinkage (PS) measurement systems measure average PS of dental composites, but the true local PS varies along the length and breadth of the composite. The PS depends on the curing light intensity distribution, resultant degree of conversion (DOC) and the curing rate. In this paper, optical fibre Bragg grating (FBG) sensing based technology is used to measure the linear post-gel PS at multiple locations within dental composite specimens, and is correlated with DOC and curing rate. A commercial dental composite is used, and its post-gel PS and DOC are mapped using embedded fibre Bragg grating sensors at different curing conditions. The distance between the curing lamp and the composite specimen is varied which resulted in different intensity distribution across the specimen. The effect of curing light intensity distribution on PS, curing rate and DOC are investigated for demonstrating a relationship among them. It is demonstrated that FBG sensing method is an effective method to accurately profiling post-gel PS across the specimen. Nature Publishing Group UK 2019-02-28 /pmc/articles/PMC6395615/ /pubmed/30816275 http://dx.doi.org/10.1038/s41598-019-40162-z Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Rajan, Ginu
Raju, Raju
Jinachandran, Sagar
Farrar, Paul
Xi, Jiangtao
Prusty, B. Gangadhara
Polymerisation Shrinkage Profiling of Dental Composites using Optical Fibre Sensing and their Correlation with Degree of Conversion and Curing Rate
title Polymerisation Shrinkage Profiling of Dental Composites using Optical Fibre Sensing and their Correlation with Degree of Conversion and Curing Rate
title_full Polymerisation Shrinkage Profiling of Dental Composites using Optical Fibre Sensing and their Correlation with Degree of Conversion and Curing Rate
title_fullStr Polymerisation Shrinkage Profiling of Dental Composites using Optical Fibre Sensing and their Correlation with Degree of Conversion and Curing Rate
title_full_unstemmed Polymerisation Shrinkage Profiling of Dental Composites using Optical Fibre Sensing and their Correlation with Degree of Conversion and Curing Rate
title_short Polymerisation Shrinkage Profiling of Dental Composites using Optical Fibre Sensing and their Correlation with Degree of Conversion and Curing Rate
title_sort polymerisation shrinkage profiling of dental composites using optical fibre sensing and their correlation with degree of conversion and curing rate
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395615/
https://www.ncbi.nlm.nih.gov/pubmed/30816275
http://dx.doi.org/10.1038/s41598-019-40162-z
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