کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1420899 986386 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A urethane-based multimethacrylate mixture and its use in dental composites with combined high-performance properties
ترجمه فارسی عنوان
مخلوط مولتی متر اکریلات متشکل از اورهات و استفاده از آن در کامپوزیت های دندانی با خواص با کارایی بالا
کلمات کلیدی
مولتی متاکریلات، کامپوزیت های دندانی، دندانپزشکی ترمیمی انقباض پلیمریزاسیون، جذب، انحلال پذیری، استحکام خمشی، اورهان، مونومرهای چند منظوره
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
چکیده انگلیسی

ObjectivesTo synthesize and characterize different molar weight urethane multimethacrylates with a single stage (one-pot) procedure. To prepare and characterize the properties of related composites.MethodsTwo methacrylate precursors were initially synthesized. Then, these precursors and the multimethacrylate system formed by their coupling were characterized by FTIR and 1H NMR. The final product was used as a matrix (with TEGDMA and SiO2 silanized microparticles) in the preparation of composites and their physical and mechanical properties were compared to those of a bis-GMA-based resin. Water sorption and solubility measurements of the composites were also performed.ResultsFTIR and NMR suggested that the proposed synthesis route yields a mixture of mainly urethane-di, -tri, and tetramethacrylates. The composites presented low polymerization shrinkage (e.g. 1.88 ± 0.08% for a resin with 70% of SiO2) and high flexural strength (e.g. 124.74 ± 9.68 MPa for a resin with 65% of SiO2) when compared to the bis-GMA based resin and other composites found to date. Water sorption and solubility results show that the composites were deemed compliant with ISO 4049 requirements.SignificanceThe mixture containing different molar weight of urethane multimethacrylates showed to be an excellent substitute for bis-GMA, achieving an equilibrium of properties (unlike reports elsewhere which show the enhancement of some parameters in detriment to others) and composites with low polymerization shrinkage, suitable microhardness and degree of conversion, and up to standard water sorption/solubility and flexural strength.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dental Materials - Volume 30, Issue 2, February 2014, Pages 155–163
نویسندگان
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