title: Silver nanoparticle incorporation effect on mechanical and thermal properties of denture base acrylic resins.
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).
  
  
  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.
authors.affiliation: - Bülent Ecevit University, Faculty of Dentistry, Department of Prosthodontics, Zonguldak, Turkey.
authors.forename: Ayşegül
authors.initials: A
authors.lastname: Köroğlu
authors.affiliation: - Bülent Ecevit University, Faculty of Dentistry, Department of Prosthodontics, Zonguldak, Turkey.
authors.forename: Onur
authors.initials: O
authors.lastname: Şahin
authors.affiliation: - Süleyman Demirel University, Faculty of Dentistry, Department of Prosthodontics, Isparta, Turkey.
authors.forename: Işın
authors.initials: I
authors.lastname: Kürkçüoğlu
authors.affiliation: - Ordu University, Faculty of Dentistry, Department of Prosthodontics, Ordu, Turkey.
authors.forename: Doğu Ömür
authors.initials: DÖ
authors.lastname: Dede
authors.affiliation: - Mersin University, Faculty of Engineering, Department of Chemical Engineering, Mersin, Turkey.
authors.forename: Tonguç
authors.initials: T
authors.lastname: Özdemir
authors.affiliation: - Bülent Ecevit University, Faculty of Arts and Sciences, Department of Chemistry, Zonguldak, Turkey.
authors.forename: Baki
authors.initials: B
authors.lastname: Hazer
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000704:Analysis of Variance; D002152:Calorimetry, Differential Scanning; D003819:Denture Bases; D055119:Elastic Modulus; D005898:Glass / Q000737:chemistry; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D044367:Phase Transition; D018583:Pliability; D058105:Polymerization; D012016:Reference Values; D015203:Reproducibility of Results; D012834:Silver / Q000737:chemistry*; D013997:Time Factors
chemical_list: D000180:Acrylic Resins; D012834:Silver