Silver nanoparticle incorporation effect on mechanical and thermal properties of denture base acrylic resins
J. appl. oral sci
; 24(6): 590-596, Nov.-Dec. 2016. tab, graf
Article
in En
| LILACS, BBO
| ID: biblio-841155
Responsible library:
BR1.1
ABSTRACT
ABSTRACT Objective The aim of the present study was to evaluate the mechanical and thermal characteristics of two denture base acrylic resins containing silver nanoparticles (AgNPs). Material and Methods Two different acrylic denture base resins (heat-polymerized and microwave polymerized) containing 0.3, 0.8 and 1.6 wt% AgNPs were evaluated for flexural strength, elastic modulus and impact strength. The glass transition temperature (Tg) and relative heat capacity (Cp) of the samples were determined from the Differential Scanning Calorimetry (DSC) results. For statistical analysis, two-way ANOVA and Tukey-HSD tests were performed. Results Addition of 0.8% and 1.6% AgNPs in microwave-polymerized resin significantly decreased the transverse strength and elastic modulus. In terms of impact strength, the addition of AgNPs has no effect on both resin groups. Glass transition temperature (Tg) was decreased with the addition of AgNPs for both denture base resins. Conclusions The incorporation of AgNPs, generally used for antimicrobial efficiency, affected the transverse strength of the denture base acrylic resins depending on the concentration of nanoparticles. Tg was decreased with the addition of AgNPs for both denture base resins.
Key words
Full text:
1
Index:
LILACS
Main subject:
Silver
/
Acrylic Resins
/
Denture Bases
/
Metal Nanoparticles
Type of study:
Evaluation_studies
Language:
En
Journal:
J. appl. oral sci
Journal subject:
ODONTOLOGIA
Year:
2016
Type:
Article