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Iranian Journal of Materials Science and Engineering، جلد ۸، شماره ۲، صفحات ۲۵-۳۳
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عنوان انگلیسی MECHANICAL PROPERTIES OF DENTAL COMPOSITE MATERIALS REINFORCED WITH MICRO AND NANO-SIZE Al2O3 FILLER PARTICLES
چکیده انگلیسی مقاله Abstract: Composite specimens were prepared by dispersion of various amounts of nano-sized Al2O3 fillers in a monomer system containing 60% Bis-GMA and 40% TEGDMA. For comparative purposes, composite samples containing micrometer size Al2O3 fillers were also prepared following the same procedure. The mechanical properties of the light- cured samples were assessed by three-point flexural strength, diametral tensile strength, and microhardness tests. The results indicated a more than hundred percent increase in the flexural strength and nearly an eighty percent increase in the diametral tensile strength values in the samples containing nano-size Al2O3 filler particles. It is interesting to note that, this improvement was observed at a much lower nano-size filler content. Fracture surfaces analyzed by scanning electron microscopy, indicated a brittle type of fracture in both sets of specimens.
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نویسندگان مقاله f فروتن | f foroutan
1 school of metallurgy and materials engineering, iran university of science amp;amp; technology, tehran-iran.


j جوادپور | j javadpou
1 school of metallurgy and materials engineering, iran university of science amp;amp; technology, tehran-iran.


علیرضا خاوندی | a khavandi
1 school of metallurgy and materials engineering, iran university of science amp;amp; technology, tehran-iran.


m عطایی | m atai
2 iran polymers and petrochemical institute, tehran-iran.


h r رضایی | h r rezaie
1 school of metallurgy and materials engineering, iran university of science amp;amp; technology, tehran-iran.
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-3-146&slc_lang=en&sid=en
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Research paper
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