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Ghaffari, Tahereh, Barzegar, Ali, Hamedi Rad, Fahimeh, Moslehifard, Elnaz. (1395). Effect of Nanoclay on Thermal Conductivity and Flexural Strength of Polymethyl Methacrylate Acrylic Resin. سامانه مدیریت نشریات علمی, 17(2), 121-127.
Tahereh Ghaffari; Ali Barzegar; Fahimeh Hamedi Rad; Elnaz Moslehifard. "Effect of Nanoclay on Thermal Conductivity and Flexural Strength of Polymethyl Methacrylate Acrylic Resin". سامانه مدیریت نشریات علمی, 17, 2, 1395, 121-127.
Ghaffari, Tahereh, Barzegar, Ali, Hamedi Rad, Fahimeh, Moslehifard, Elnaz. (1395). 'Effect of Nanoclay on Thermal Conductivity and Flexural Strength of Polymethyl Methacrylate Acrylic Resin', سامانه مدیریت نشریات علمی, 17(2), pp. 121-127.
Ghaffari, Tahereh, Barzegar, Ali, Hamedi Rad, Fahimeh, Moslehifard, Elnaz. Effect of Nanoclay on Thermal Conductivity and Flexural Strength of Polymethyl Methacrylate Acrylic Resin. سامانه مدیریت نشریات علمی, 1395; 17(2): 121-127.

Effect of Nanoclay on Thermal Conductivity and Flexural Strength of Polymethyl Methacrylate Acrylic Resin

Journal of Dentistry
مقاله 7، دوره 17، شماره 2، شهریور 2016، صفحه 121-127    اصل مقاله (435.45 K)
نوع مقاله: Original Article
نویسندگان
Tahereh Ghaffari1؛ Ali Barzegar* 2؛ Fahimeh Hamedi Rad1؛ Elnaz Moslehifard1
1Periodontal Research Center, Dept. of Prosthodontics, Tabriz University of Medical Sciences, Tabriz, Iran.
2Dept. of Prosthodontics, Faculty of Dentistry, Qom University of Medical Sciences, Qom, Iran.
چکیده
Statement of the Problem: The mechanical and thermal properties of polymethyl methacrylate (PMMA) acrylic resin should be improved to counterweigh its structural deficiencies.Purpose: The aim of this study was to compare the flexural strength and thermal conductivity of conventional acrylic resin and acrylic resin loaded with nanoclay.Materials and Method: The methacrylate monomer containing the 0.5, 1 and 2 wt% of nanoclay was placed in an ultrasonic probe and mixed with the PMMA powder. Scanning electron microscopy was used to verify homogeneous distribution of particles. Twenty-four 20×20×200-mm cubic samples were prepared for flexural strength test; 18 samples containing nanoclay and 6 samples for the control group. Another 24 cylindrical samples of 38×25 mm were prepared for thermal conductivity test. One-way ANOVA was used for statistical analysis, followed by multiple-comparison test (Scheffé’s test). Statistical significance was set at p< 0.05.Results: Increasing the concentration of nanoclay incorporated into the acrylic resin samples increased thermal conductivity but decreased flexural strength (p< 0.05).Conclusion: Based on the results of this study, adding nanoclay particles to PMMA improved its thermal conductivity, while it had a negative effect on the flexural strength. Keywords ● Polymethyl Methacrylate  ● Nanoparticles  ● Thermal Conductivity  ● Flexural Strength
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