Silver nanoparticle incorporation effect on mechanical and thermal properties of denture base acrylic resins
AUTOR(ES)
KÖROĞLU, Ayşegül, ŞAHİN, Onur, KÜRKÇÜOĞLU, Işın, DEDE, Doğu Ömür, ÖZDEMİR, Tonguç, HAZER, Baki
FONTE
J. Appl. Oral Sci.
DATA DE PUBLICAÇÃO
2016-12
RESUMO
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.
Documentos Relacionados
- Effect of repeated disinfections by microwave energy on the physical and mechanical properties of denture base acrylic resins
- Effect of thermal cycling on denture base and autopolymerizing reline resins
- Influence of chemical and mechanical polishing on water sorption and solubility of denture base acrylic resins
- Effect of microwave disinfection on physical and mechanical properties of acrylic resins
- Effect of ridge lap surface treatment and thermocycling on microtensile bond strength of acrylic teeth to denture base resins