@Article{, title={Evaluation the Effect of Adding Silanized Silicon Dioxide Nano Filler and Carbon Nanotube Composite on Some Properties of Heat Cured Acrylic Denture Base Material تقييم تأثير اضافة خليط اوكسيد السيكون النانوي والكاربون نانو تيوب على مادة الطقم الاكريليكية الحرارية}, author={Abdalbasit A. Fatihallah عبد الباسط أحمد فتح الله}, journal={Al-Rafidain University College For Sciences مجلة كلية الرافدين الجامعة للعلوم}, volume={}, number={38}, pages={1-15}, year={2016}, abstract={The mechanical properties of polymethyl methacrylate (PMMA) are still far from ideal to fulfill the perfect mechanical requirements for dental applications. The purpose of this study was to evaluate the effect of addition of silanized silicon dioxide Nano filler (SiO2) and carbon nanotube on some properties of heat cured acrylic resin denture base material.Materials and methods: One hundred sixty (160) prepared specimens were divided into 4 groups according to the tests, each group consisted of 40 specimens and these were subdivided into 4 groups (unreinforced heat cured acrylic resin as control group),reinforced acrylic resin with (1%wt carbon nanotube and 3%wt silanized silicon dioxide) group and reinforced acrylic with(1.5%wt carbon nanotube and 5%wt silanized silicon dioxide)and reinforced acrylic with (1.5%wt carbon nanotube and 7%wt silanized silicon dioxide) .The tensile strength, transverse strength, indentation hardness(shore D), water sorption and solubility were investigated . The results were statistically analyzed using ANOVA test with LSD multiple comparisons.Results: The result of this study shows a highly significant increase in tensile strength, surface hardness, transverse strength and significant decrease water sorption and water solubility with studied groups (the addition of carbon nanotube and silanized silicon dioxide) to PMMA than control group, also the best results were obtained with acrylic resin reinforced with(1.5%wt carbon nanotube and 5%wt silanized silicon dioxide).Conclusion: The addition of a mixture of carbon nanotube (1.5%wt) and silanized nano silicon dioxide (5%wt) to PMMA acrylic resins improves its mechanical and physical properties.

تحسين صفات مادة الطقم الاكريليكية الحرارية هي من اهم مايشغل العلماء في الوقت الحاضر تم استخدمت في البحث 160 عينه قسمت الى اربع مجاميع حسب نوع الفحص احتوت كل مجموعة على 40 وتم فحص بعض الخواص الميكانيكية والفيزياوية واتضح ان خليط الكاربون نانو تيوب بنسبة 1.5% من الوزن مضاف اليه اوكسيد السيليكون النانوي بنسبة 5% من الوزن يحسن صفات مادة الطقم الاكريلي الحراري.} }