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Journal of Dentistry, Shiraz University of Medical Sciences، جلد ۱۴، شماره ۱، صفحات ۱۳-۰
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Flexural Strength of Glass and Polyethylene Fiber Combined with Three Different Composites |
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| چکیده انگلیسی مقاله |
Statement of Problem: The flexure of the fiber- reinforced composites (FRC) which can be generally used instead of fixed metal- framework prostheses have been more advocated due to the enormous demands for the conservative and esthetic restoration. The flexure of the fiber should be well-fitted to its covering composite. No study has been reported the comparison of the combination of glass and polyethylene fiber with particulate filled composite and fiber reinforced composite yet. Purpose: This study compared the flexural strength of two types of fibers combined with three types of composites. Materials and Method: Sixty-six specimens were prepared in a split mold (25×2×2 mm). The specimens were divided into six groups according to the type of resin and the fiber (N = 11): group 1: Z250 composite + Polyethylene fiber; group 2: Build It composite + Polyethylene fiber; group 3: Nulite F composite+ Polyethylene fiber; group 4: glass fiber + Z250 composite; group 5: glass fiber + Build-It composite and group 6: glass fiber + Nulite F. The mean flexural strengths (MPa) values were determined in a 3-point bending test at a crosshead speed of 1 mm/min by a universal testing machine (Zwick/Roell Z020, Germany). The results were statistically analyzed, using one and two- way ANOVA and LSD post-hoc tests ( p < 0.05). Results: The highest flexural strength was registered for glass fiber in combination with Z250 composite (500 MPa) and the lowest for polyethylene fiber in combination with Build-It composite (188 MPa). One-way ANOVA test revealed that there was no statistically significant difference between polyethylene fiber combinations ( p = 0.62) but there was a significant difference between glass fiber combinations ( p = 0.0001). Two-way ANOVA revealed that the fiber type had a significant effect on flexural strength ( p = 0.0001). Conclusion: The choice of fiber and composite type was shown to have a significant positive influence on the flexural properties of the fiber-reinforced composite. Glass fiber has a significant influence on the flexural properties of directly- made specimens. |
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| کلیدواژه‌های انگلیسی مقاله |
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| نویسندگان مقاله |
f شرف الدین | f sharafeddin
dept. of operative dentistry, biomaterials research center, school of dentistry, shiraz university of medial sciences, shiraz, iran
سازمان اصلی تایید شده: دانشگاه شیراز (Shiraz university)
aa علوی | aa alavi
dept. of operative dentistry, biomaterials research center, school of dentistry, shiraz university of medial sciences, shiraz, iran
سازمان اصلی تایید شده: دانشگاه شیراز (Shiraz university)
z طالعی | z talei
dept. of operative dentistry, school of dentistry, shiraz university of medial sciences, shiraz, iran
سازمان اصلی تایید شده: دانشگاه شیراز (Shiraz university)
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| نشانی اینترنتی |
http://dentjods.sums.ac.ir/index.php/JDSUMS/article/view/24 |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
Original Article |
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