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Degree of Conversion of Resin-Modified Glass Ionomer Cement Containing Hydroxyapatite Nanoparticles

OBJECTIVES: Hydroxyapatite (HA) nanoparticles are used to improve the physical and mechanical properties of glass ionomers (GIs). This study aimed to assess the effect of addition of different weight percentages of nano-HA on degree of conversion (DC) of Fuji II LC GI cement using a spectrometer. MA...

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Autores principales: Jalalian, Behnoosh, Golkar, Parisa, Paktinat, Alireza, Ahmadi, Elham, Panahande, Seyed Ali, Omrani, Ladan Ranjbar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Tehran University of Medical Sciences 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7569272/
https://www.ncbi.nlm.nih.gov/pubmed/33089242
http://dx.doi.org/10.18502/fid.v16i6.3440
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author Jalalian, Behnoosh
Golkar, Parisa
Paktinat, Alireza
Ahmadi, Elham
Panahande, Seyed Ali
Omrani, Ladan Ranjbar
author_facet Jalalian, Behnoosh
Golkar, Parisa
Paktinat, Alireza
Ahmadi, Elham
Panahande, Seyed Ali
Omrani, Ladan Ranjbar
author_sort Jalalian, Behnoosh
collection PubMed
description OBJECTIVES: Hydroxyapatite (HA) nanoparticles are used to improve the physical and mechanical properties of glass ionomers (GIs). This study aimed to assess the effect of addition of different weight percentages of nano-HA on degree of conversion (DC) of Fuji II LC GI cement using a spectrometer. MATERIALS AND METHODS: In this in vitro experimental study, 30 samples were fabricated of Fuji II LC (improved) GI cement in six groups (n=5) containing 0%, 1%, 2%, 5%, 7% and 10wt% nano-HA. The obtained paste in each group was subjected to Fourier-transform infrared spectroscopy (FTIR) before curing to assess the monomer to polymer DC percentage. The paste was then light-cured and underwent FTIR again. One-way ANOVA was applied to compare the DC percentage of different groups. Pairwise comparisons were performed using the Tukey’s test. RESULTS: The DC was 57.88±0.57% in 0%, 60.04±0.63% in 1%, 66.92±0.54% in 2%, 65.5±0.71% in 5%, 51.49±0.24% in 7% and 50.09±0.32% in 10% nano-HA group. The difference in DC among the groups was statistically significant (P<0.0001). The highest DC was noted in 2% nano-HA and the lowest DC was found in 10% nano-HA group. Pairwise comparisons revealed significant differences between the groups in DC (P<0.0001). CONCLUSION: Increasing the weight percentage of nano-HA to 2% increased the DC but increasing the nano-HA weight percentage over 5% decreased the DC of resin-modified glass ionomer cement (RMGIC). The highest DC was noted in 5w% and 2w% nano-HA groups. Thus, 5w% and 2w% nano-HA can be used to improve the DC of RMGIC.
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spelling pubmed-75692722020-10-20 Degree of Conversion of Resin-Modified Glass Ionomer Cement Containing Hydroxyapatite Nanoparticles Jalalian, Behnoosh Golkar, Parisa Paktinat, Alireza Ahmadi, Elham Panahande, Seyed Ali Omrani, Ladan Ranjbar Front Dent Original Article OBJECTIVES: Hydroxyapatite (HA) nanoparticles are used to improve the physical and mechanical properties of glass ionomers (GIs). This study aimed to assess the effect of addition of different weight percentages of nano-HA on degree of conversion (DC) of Fuji II LC GI cement using a spectrometer. MATERIALS AND METHODS: In this in vitro experimental study, 30 samples were fabricated of Fuji II LC (improved) GI cement in six groups (n=5) containing 0%, 1%, 2%, 5%, 7% and 10wt% nano-HA. The obtained paste in each group was subjected to Fourier-transform infrared spectroscopy (FTIR) before curing to assess the monomer to polymer DC percentage. The paste was then light-cured and underwent FTIR again. One-way ANOVA was applied to compare the DC percentage of different groups. Pairwise comparisons were performed using the Tukey’s test. RESULTS: The DC was 57.88±0.57% in 0%, 60.04±0.63% in 1%, 66.92±0.54% in 2%, 65.5±0.71% in 5%, 51.49±0.24% in 7% and 50.09±0.32% in 10% nano-HA group. The difference in DC among the groups was statistically significant (P<0.0001). The highest DC was noted in 2% nano-HA and the lowest DC was found in 10% nano-HA group. Pairwise comparisons revealed significant differences between the groups in DC (P<0.0001). CONCLUSION: Increasing the weight percentage of nano-HA to 2% increased the DC but increasing the nano-HA weight percentage over 5% decreased the DC of resin-modified glass ionomer cement (RMGIC). The highest DC was noted in 5w% and 2w% nano-HA groups. Thus, 5w% and 2w% nano-HA can be used to improve the DC of RMGIC. Tehran University of Medical Sciences 2019 2019-12-20 /pmc/articles/PMC7569272/ /pubmed/33089242 http://dx.doi.org/10.18502/fid.v16i6.3440 Text en Copyright© Dental Research Center, Tehran University of Medical Sciences This work is published as an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by-nc/4). Non-commercial uses of the work are permitted, provided the original work is properly cited.
spellingShingle Original Article
Jalalian, Behnoosh
Golkar, Parisa
Paktinat, Alireza
Ahmadi, Elham
Panahande, Seyed Ali
Omrani, Ladan Ranjbar
Degree of Conversion of Resin-Modified Glass Ionomer Cement Containing Hydroxyapatite Nanoparticles
title Degree of Conversion of Resin-Modified Glass Ionomer Cement Containing Hydroxyapatite Nanoparticles
title_full Degree of Conversion of Resin-Modified Glass Ionomer Cement Containing Hydroxyapatite Nanoparticles
title_fullStr Degree of Conversion of Resin-Modified Glass Ionomer Cement Containing Hydroxyapatite Nanoparticles
title_full_unstemmed Degree of Conversion of Resin-Modified Glass Ionomer Cement Containing Hydroxyapatite Nanoparticles
title_short Degree of Conversion of Resin-Modified Glass Ionomer Cement Containing Hydroxyapatite Nanoparticles
title_sort degree of conversion of resin-modified glass ionomer cement containing hydroxyapatite nanoparticles
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7569272/
https://www.ncbi.nlm.nih.gov/pubmed/33089242
http://dx.doi.org/10.18502/fid.v16i6.3440
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