European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
September 2013
Print ISSN:
0965-7452
Vol:
21
Issue:
3

Effect of Different Chemical Disinfectants on the Flexural Strength of Heat-Polymerized Acrylic Resins

doi:10.1922/EJPRD_1204Nejatidanesh04

Abstract - The purpose of this study was to evaluate the effect of chemical disinfectants on flexural strength of denture base acrylic resins. A total of 176 rectangular specimens(65x10x3mm) were made from four heat-polymerized acrylic resins (Triplex,QC-20, Meliodent and Acropars)(n=44). The specimens were thermal cycled for 5000 cycles 5-55°C and randomly divided into four groups (n=11). The specimens were immersed in 1 % sodium hypochlorite, 2% glutaraldehyde , 10% Micro 10 or water for 30 minutes. The flexural strength was evaluated using a universal testing machine at a crosshead speed of 5mm/min. Data were subjected to 2-way ANOVA and Tukey HSD (α=0.05). The highest flexural strengths of denture base resins were achieved after immersion in water (Triplex =128.9± 12.8, QC-20=125± 11.8, Meliodent=96.2± 11.4 and Acropars=78.1±12.3 MPa). Triplex and QC-20 showed the highest flexural strengths in all of the solutions (P<0.05). The flexural strength of denture base acrylic resins was significantly affected by immersion in disinfection solutions but the reduction in flexural strengths of Triplex, QC-20 and Meliodent after disinfection by %1 sodium hypochlorite, %2 glutaraldhyde and Micro 10 were clinically insignificant.

KEYWORDS: Acrylic resins, Disinfectants, Flexural strength, Polymethyl methacrylate

Article Price
£15.00
Institution Article Price
£
Page Start
105
Page End
108
Authors
O. Savabi, K. Attar, F. Nejatidanesh, H. Goroohi, H. Badrian

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  1. Wetting Characteristics of Addition Silicon Materials Subjected to Immersion Disinfection – An In-Vitro Study.
  2. 98
  3. 104

  1. Effect of Different Chemical Disinfectants on the Flexural Strength of Heat-Polymerized Acrylic Resins
  2. 105
  3. 108

  1. The Incidence of Centric Slides in Healthy Individuals and TMD Patients
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  1. A Comparison of the Accuracy of Three Removable Die Systems and Two Die Materials
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  1. A Novel Design Solution to the Fraenal Notch of Maxillary Dentures
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  1. Removable Partial Denture Education in Portugal Following the Bologna Process
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  1. The Effect of Numbers and Locations of Retentive Holes Placed on Master Casts on Reducing the Polymerization Distortion of the Maxillary Complete Denture
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  1. Prosthodontic Rehabilitation of a Patient Using a SwingLock Lower Denture after Segmental Mandibulectomy
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  1. Book Review - Peri-implantitis. Stefan Renvert
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