Model resin composites incorporating ZnO-NP: activity against S. mutans and physicochemical properties characterization

Autor: Vanessa Loureiro Moreira e Silva, Andréa Gonçalves Antonio, Natasha Lamego Brandão, Maristela Barbosa Portela, Luciane Cople Maia, Eduardo Moreira da Silva
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Surface Properties
Physicochemical properties
Barium Compounds
chemistry.chemical_element
02 engineering and technology
Composite Resins
Indentation hardness
Polyethylene Glycols
Streptococcus mutans
03 medical and health sciences
chemistry.chemical_compound
0302 clinical medicine
Polymethacrylic Acids
Flexural strength
Reference Values
Elastic Modulus
Materials Testing
Resin composite
Zinc oxide
Bisphenol A-Glycidyl Methacrylate
Hardness Tests
Solubility
Pliability
General Dentistry
Analysis of Variance
Aqueous solution
biology
Silicates
Reproducibility of Results
Water
Barium
030206 dentistry
021001 nanoscience & nanotechnology
biology.organism_classification
Lactic acid
lcsh:RK1-715
chemistry
Biofilms
lcsh:Dentistry
Linear Models
Microscopy
Electron
Scanning
Nanoparticles
Original Article
0210 nano-technology
Antibacterial activity
S. mutans
Nuclear chemistry
Zdroj: Journal of Applied Oral Science, Vol 26, Iss 0 (2018)
Journal of Applied Oral Science v.26 2018
Journal of applied oral science
Universidade de São Paulo (USP)
instacron:USP
Journal of Applied Oral Science
Journal of Applied Oral Science, Volume: 26, Article number: e20170270, Published: 07 MAY 2018
ISSN: 1678-7765
Popis: Although resin composites are widely used in the clinical practice, the development of recurrent caries at composite-tooth interface still remains as one of the principal shortcomings to be overcome in this field. Objectives To evaluate the activity against S. mutans biofilm of model resin composites incorporating different concentrations of ZnO-nanoparticles (ZnO-NP) and characterize their physicochemical properties. Materials and Methods Different concentrations of ZnO-NP (wt.%): E1=0, E2=0.5, E3=1, E4=2, E5=5 and E6=10 were incorporated into a model resin composite consisting of Bis-GMA-TEGDMA and barium borosilicate particles. The activity against S. mutans biofilm was evaluated by metabolic activity and lactic acid production. The following physicochemical properties were characterized: degree of conversion (DC%), flexural strength (FS), elastic modulus (EM), hardness (KHN), water sorption (Wsp), water solubility (Wsl) and translucency (TP). Results E3, E4, E5 and E6 decreased the biofilm metabolic activity and E5 and E6 decreased the lactic acid production (p0.05). E5 and E6 presented the lowest values of KHN (p
Databáze: OpenAIRE
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