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A Novel Polishing Paste (Mollusk Shells) for Poly (Methylmethacrylate)
OBJECTIVE: The aim of this study was to evaluate the effectiveness of a mollusk shells polishing paste (Donax obesulus) on the surface roughness of acrylic resin poly (methylmethacrylate) (PMMA). METHODS: This study was an in vitro experimental design. A sample size of 72 was divided into 4 groups o...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8272669/ https://www.ncbi.nlm.nih.gov/pubmed/34306082 http://dx.doi.org/10.1155/2021/5511797 |
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author | Guerra, Nicole Meneses, Evelin Caballero-García, Stefany Mayta-Tovalino, Frank |
author_facet | Guerra, Nicole Meneses, Evelin Caballero-García, Stefany Mayta-Tovalino, Frank |
author_sort | Guerra, Nicole |
collection | PubMed |
description | OBJECTIVE: The aim of this study was to evaluate the effectiveness of a mollusk shells polishing paste (Donax obesulus) on the surface roughness of acrylic resin poly (methylmethacrylate) (PMMA). METHODS: This study was an in vitro experimental design. A sample size of 72 was divided into 4 groups of n = 18 each. PMMA specimens were prepared and polished with the evaluated pastes using mollusk shells (experimental paste) and pumice stone. Surface roughness (μm) was measured using a profilometer after polishing the PMMA samples. The paired Wilcoxon test was used to evaluate the roughness values at 24 and 48 hours. Then, the Mann–Whitney U test was used to identify the differences between the effects of the two groups evaluated with a significance level of α = 0.05. RESULTS: The roughness difference between the pastes under study was compared, and mean values of 0.50 ± 0.07 μm (mollusk shell paste group) and 0.45 ± 0.12 μm (pumice group) were obtained. No statistically significant differences were found between the experimental paste and pumice stone paste (p=0.309). The specimens polished with pumice stone paste showed higher roughness values, while those polished with the experimental paste exhibited the lowest values. Conclusion. In summary, mollusk shells polishing paste had a decrease in roughness values compared to pumice, although these differences were not statistically significant. |
format | Online Article Text |
id | pubmed-8272669 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Hindawi |
record_format | MEDLINE/PubMed |
spelling | pubmed-82726692021-07-22 A Novel Polishing Paste (Mollusk Shells) for Poly (Methylmethacrylate) Guerra, Nicole Meneses, Evelin Caballero-García, Stefany Mayta-Tovalino, Frank Int J Dent Research Article OBJECTIVE: The aim of this study was to evaluate the effectiveness of a mollusk shells polishing paste (Donax obesulus) on the surface roughness of acrylic resin poly (methylmethacrylate) (PMMA). METHODS: This study was an in vitro experimental design. A sample size of 72 was divided into 4 groups of n = 18 each. PMMA specimens were prepared and polished with the evaluated pastes using mollusk shells (experimental paste) and pumice stone. Surface roughness (μm) was measured using a profilometer after polishing the PMMA samples. The paired Wilcoxon test was used to evaluate the roughness values at 24 and 48 hours. Then, the Mann–Whitney U test was used to identify the differences between the effects of the two groups evaluated with a significance level of α = 0.05. RESULTS: The roughness difference between the pastes under study was compared, and mean values of 0.50 ± 0.07 μm (mollusk shell paste group) and 0.45 ± 0.12 μm (pumice group) were obtained. No statistically significant differences were found between the experimental paste and pumice stone paste (p=0.309). The specimens polished with pumice stone paste showed higher roughness values, while those polished with the experimental paste exhibited the lowest values. Conclusion. In summary, mollusk shells polishing paste had a decrease in roughness values compared to pumice, although these differences were not statistically significant. Hindawi 2021-07-03 /pmc/articles/PMC8272669/ /pubmed/34306082 http://dx.doi.org/10.1155/2021/5511797 Text en Copyright © 2021 Nicole Guerra et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Guerra, Nicole Meneses, Evelin Caballero-García, Stefany Mayta-Tovalino, Frank A Novel Polishing Paste (Mollusk Shells) for Poly (Methylmethacrylate) |
title | A Novel Polishing Paste (Mollusk Shells) for Poly (Methylmethacrylate) |
title_full | A Novel Polishing Paste (Mollusk Shells) for Poly (Methylmethacrylate) |
title_fullStr | A Novel Polishing Paste (Mollusk Shells) for Poly (Methylmethacrylate) |
title_full_unstemmed | A Novel Polishing Paste (Mollusk Shells) for Poly (Methylmethacrylate) |
title_short | A Novel Polishing Paste (Mollusk Shells) for Poly (Methylmethacrylate) |
title_sort | novel polishing paste (mollusk shells) for poly (methylmethacrylate) |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8272669/ https://www.ncbi.nlm.nih.gov/pubmed/34306082 http://dx.doi.org/10.1155/2021/5511797 |
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