Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclay
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Publication Date: | 2022 |
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Format: | Article |
Language: | eng |
Source: | Repositório Institucional da UNESP |
Download full: | http://dx.doi.org/10.1007/s10266-021-00629-w http://hdl.handle.net/11449/231465 |
Summary: | Dental composites are aesthetic materials widely used in Dentistry for replacing hard dental tissues lost due to caries or traumas. The aim of this study was to fabricate low-shrinkage dental composite charged with nanoclay fillers (montmorillonite Cloisite®—MMT) and evaluate their cytotoxicity and physicomechanical properties. Four dental composites were produced from the same organic matrix: Bis-GMA/TEGDMA (30 wt.%). The filler system was constituted of BaSi, SiO2, and MMT in the following concentrations (wt.%): 93.8/6.2/0, 89.1/5.9/5, 86.7/5.8/7.5, and 84.4/5.6/10 (E0: 0; E5: 5%; E7.5: 7.5%; E10: 10% of MMT nanoclays). The following properties were tested: in vitro cytotoxicity, flexural strength, elastic modulus, volumetric shrinkage, water sorption, water solubility, and hygroscopic expansion. Scanning electron microscopy was used to characterize composites’ topography. Data were analyzed by one-way ANOVA and Tukey’s HSD post hoc test (p < 0.05). MMT nanoclays did not affect the cytotoxicity. E5 and E7.5 groups showed a significant decrease in polymerization shrinkage while maintained the overall physicomechanical properties. The inclusion of 5 and 7.5 wt.% of MMT nanoclays allowed the fabrication of dental composites with low cytotoxicity and low polymerization shrinkage, without jeopardizing the overall behaviour of their physicomechanical properties (flexural strength, elastic modulus, water sorption, water solubility, and hygroscopic expansion). These aspects suggest that the usage of MMT nanoclays could be an effective strategy to formulate new dental composites with clinical applicability. |
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Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclayCytotoxicityDental compositeNanoclayPolymer-layered nanocompositesPolymerization shrinkageDental composites are aesthetic materials widely used in Dentistry for replacing hard dental tissues lost due to caries or traumas. The aim of this study was to fabricate low-shrinkage dental composite charged with nanoclay fillers (montmorillonite Cloisite®—MMT) and evaluate their cytotoxicity and physicomechanical properties. Four dental composites were produced from the same organic matrix: Bis-GMA/TEGDMA (30 wt.%). The filler system was constituted of BaSi, SiO2, and MMT in the following concentrations (wt.%): 93.8/6.2/0, 89.1/5.9/5, 86.7/5.8/7.5, and 84.4/5.6/10 (E0: 0; E5: 5%; E7.5: 7.5%; E10: 10% of MMT nanoclays). The following properties were tested: in vitro cytotoxicity, flexural strength, elastic modulus, volumetric shrinkage, water sorption, water solubility, and hygroscopic expansion. Scanning electron microscopy was used to characterize composites’ topography. Data were analyzed by one-way ANOVA and Tukey’s HSD post hoc test (p < 0.05). MMT nanoclays did not affect the cytotoxicity. E5 and E7.5 groups showed a significant decrease in polymerization shrinkage while maintained the overall physicomechanical properties. The inclusion of 5 and 7.5 wt.% of MMT nanoclays allowed the fabrication of dental composites with low cytotoxicity and low polymerization shrinkage, without jeopardizing the overall behaviour of their physicomechanical properties (flexural strength, elastic modulus, water sorption, water solubility, and hygroscopic expansion). These aspects suggest that the usage of MMT nanoclays could be an effective strategy to formulate new dental composites with clinical applicability.Department of Operative Dentistry College of Dentistry Oklahoma UniversityAnalytical Laboratory of Restorative Biomaterials-LABiom-R Faculdade de Odontologia Universidade Federal Fluminense, NiteróiDepartment of Dental Materials and Prosthodontics School of Dentistry São Paulo State University-UNESP, SPDepartment of Operative Dentistry IOPUC, Rua Marquês de São Vicente, 389-Gávea, RJDepartment of Restorative Dentistry School of Dentistry Rio de Janeiro State UniversityDepartment of Dental Materials and Prosthodontics School of Dentistry São Paulo State University-UNESP, SPOklahoma UniversityUniversidade Federal Fluminense (UFF)Universidade Estadual Paulista (UNESP)IOPUCRio de Janeiro State UniversityRitto, Fernanda Pittada Silva, Eduardo MoreiraBorges, Alexandre Luiz Souto [UNESP]Borges, Márcio Antônio ParaizoSampaio-Filho, Hélio Rodrigues2022-04-29T08:45:33Z2022-04-29T08:45:33Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article35-43http://dx.doi.org/10.1007/s10266-021-00629-wOdontology, v. 110, n. 1, p. 35-43, 2022.1618-12551618-1247http://hdl.handle.net/11449/23146510.1007/s10266-021-00629-w2-s2.0-85108620486Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengOdontologyinfo:eu-repo/semantics/openAccess2022-04-29T08:45:33Zoai:repositorio.unesp.br:11449/231465Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:45:33Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclay |
title |
Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclay |
spellingShingle |
Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclay Ritto, Fernanda Pitta Cytotoxicity Dental composite Nanoclay Polymer-layered nanocomposites Polymerization shrinkage |
title_short |
Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclay |
title_full |
Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclay |
title_fullStr |
Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclay |
title_full_unstemmed |
Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclay |
title_sort |
Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclay |
author |
Ritto, Fernanda Pitta |
author_facet |
Ritto, Fernanda Pitta da Silva, Eduardo Moreira Borges, Alexandre Luiz Souto [UNESP] Borges, Márcio Antônio Paraizo Sampaio-Filho, Hélio Rodrigues |
author_role |
author |
author2 |
da Silva, Eduardo Moreira Borges, Alexandre Luiz Souto [UNESP] Borges, Márcio Antônio Paraizo Sampaio-Filho, Hélio Rodrigues |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Oklahoma University Universidade Federal Fluminense (UFF) Universidade Estadual Paulista (UNESP) IOPUC Rio de Janeiro State University |
dc.contributor.author.fl_str_mv |
Ritto, Fernanda Pitta da Silva, Eduardo Moreira Borges, Alexandre Luiz Souto [UNESP] Borges, Márcio Antônio Paraizo Sampaio-Filho, Hélio Rodrigues |
dc.subject.por.fl_str_mv |
Cytotoxicity Dental composite Nanoclay Polymer-layered nanocomposites Polymerization shrinkage |
topic |
Cytotoxicity Dental composite Nanoclay Polymer-layered nanocomposites Polymerization shrinkage |
description |
Dental composites are aesthetic materials widely used in Dentistry for replacing hard dental tissues lost due to caries or traumas. The aim of this study was to fabricate low-shrinkage dental composite charged with nanoclay fillers (montmorillonite Cloisite®—MMT) and evaluate their cytotoxicity and physicomechanical properties. Four dental composites were produced from the same organic matrix: Bis-GMA/TEGDMA (30 wt.%). The filler system was constituted of BaSi, SiO2, and MMT in the following concentrations (wt.%): 93.8/6.2/0, 89.1/5.9/5, 86.7/5.8/7.5, and 84.4/5.6/10 (E0: 0; E5: 5%; E7.5: 7.5%; E10: 10% of MMT nanoclays). The following properties were tested: in vitro cytotoxicity, flexural strength, elastic modulus, volumetric shrinkage, water sorption, water solubility, and hygroscopic expansion. Scanning electron microscopy was used to characterize composites’ topography. Data were analyzed by one-way ANOVA and Tukey’s HSD post hoc test (p < 0.05). MMT nanoclays did not affect the cytotoxicity. E5 and E7.5 groups showed a significant decrease in polymerization shrinkage while maintained the overall physicomechanical properties. The inclusion of 5 and 7.5 wt.% of MMT nanoclays allowed the fabrication of dental composites with low cytotoxicity and low polymerization shrinkage, without jeopardizing the overall behaviour of their physicomechanical properties (flexural strength, elastic modulus, water sorption, water solubility, and hygroscopic expansion). These aspects suggest that the usage of MMT nanoclays could be an effective strategy to formulate new dental composites with clinical applicability. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-29T08:45:33Z 2022-04-29T08:45:33Z 2022-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s10266-021-00629-w Odontology, v. 110, n. 1, p. 35-43, 2022. 1618-1255 1618-1247 http://hdl.handle.net/11449/231465 10.1007/s10266-021-00629-w 2-s2.0-85108620486 |
url |
http://dx.doi.org/10.1007/s10266-021-00629-w http://hdl.handle.net/11449/231465 |
identifier_str_mv |
Odontology, v. 110, n. 1, p. 35-43, 2022. 1618-1255 1618-1247 10.1007/s10266-021-00629-w 2-s2.0-85108620486 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Odontology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
35-43 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1799964835976314880 |