کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7868665 1509163 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dental glass ionomer cement reinforced by cellulose microfibers and cellulose nanocrystals
ترجمه فارسی عنوان
سیمان آینومر شیشه ای تقویت شده توسط میکرو فیبر سلولز و نانوبلورهای سلولز
کلمات کلیدی
مواد دندانی، نانوکریستالهای سلولز، میکرو فیبر سلولز، سیمان آینومر شیشه ای دندان، نانوکامپوزیت،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
چکیده انگلیسی
The aim of this work was to evaluate if the addition of cellulose microfibers (CmF) or cellulose nanocrystals (CNC) would improve the mechanical properties of a commercial dental glass ionomer cement (GIC). Different amounts of CmF and CNC were previously prepared and then added to reinforce the GIC matrix while it was being manipulated. Test specimens with various concentrations of CmF or CNC in their total masses were fabricated and submitted to mechanical tests (to evaluate their compressive and diametral tensile strength, modulus, surface microhardness and wear resistance) and characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). The incorporation of CmF in the GIC matrix did not greatly improve the mechanical properties of GIC. However, the addition of a small amount of CNC in the GIC led to significant improvements in all of the mechanical properties evaluated: compressive strength (increased up to 110% compared with the control group), elastic modulus increased by 161%, diametral tensile strength increased by 53%, and the mass loss decreased from 10.95 to 3.87%. Because the composites presented a considerable increase in mechanical properties, the modification of the conventional GIC with CNC can represent a new and promising dental restorative material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 58, 1 January 2016, Pages 389-395
نویسندگان
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