این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Journal of Dental Materials and Techniques، جلد ۱۱، شماره ۲، صفحات ۶۸-۷۴
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Effects of Adding TiO2 Nanoparticles on Flexural Strength and Hardness of Two New Commercial Flowable Dental Composites
چکیده انگلیسی مقاله Introduction The present study aimed to investigate the effect of adding TiO2 nanoparticles on the flexural strength and hardness of two dental composites. Methods: TiO2 nanoparticles were prepared and added to two flowable dental composites (Beautifil Flow Plus and Clearfil AP-X Flow) at 0, 0.2, 0.5, and 1% (w/w) which was confirmed by SEM and TEM analysis. Mixing was manually performed using Lentulo Spiral Paste Carrier. The specimens were divided into 8 groups of 10 according to the type of composites and different concentrations of TiO2 nanoparticles. Bar-shaped specimens (2×2×25 mm) were fabricated in a half-split stainless steel mold and cured for 40 s by an LED curing system. Flexural strength was evaluated using a universal testing machine. Surface microhardness was also measured by the Vickers microhardness tester. Results: For the two tested composites, flexural strength increased by 0.5% TiO2 nanoparticles concentration. The flexural strength of Clearfil AP-X Flow combined with 0.2, 0.5 and 1% TiO2 nanoparticles were 112.54±12.87 (P>0.05), 114.62±8.14 (P>0.05), and 99.92±6.23 (P< 0.05), respectively. Also, for Beautifil Flow combined with 0.2, 0.5 and 1% TiO2 nanoparticles were, 92.21±4.26 (P< 0.05), 94.05±5.36 (P< 0.05) and 74.17±9.43 (P< 0.05), respectively. Conclusion: Adding TiO2 nanoparticles to Clearfil AP-X Flow composite decreased the hardness; however, adding TiO2 nanoparticles by 1% concentration increased the surface hardness of Beautifil Flow and reached its maximum value. Also, TiO2 nanoparticles at very low concentrations enhance the flexural strength of dental flowable composites.
کلیدواژه‌های انگلیسی مقاله flowable composite, Nanoparticles, surface hardness, Titanium dioxide
نویسندگان مقاله | Fatemeh Koohpeima
Department of Operative Dentistry, Biomaterial Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran


| Mohammad Javad Mokhtari
Department of Biology, Zarghan Branch, Islamic Azad University, Zarghan, Iran


| Sajjad Khaksabz
Department of Operative Dentistry, Biomaterial Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
نشانی اینترنتی https://jdmt.mums.ac.ir/article_20311.html
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده Original Article
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات