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Influence of Zirconia and Polymerized Microfiller on Some Properties of Polymethyl Methacrylate Denture Base
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يأتي الاستخدام العالمي لبولي ميثيل ميثاكريلات (PMMA) كمادة أساسية لأطقم الأسنان من سهولة المعالجة والإصلاح والتوافق الحيوي والمظهر الجمالي الممتاز. ومع ذلك ، فإن أوجه القصور في مواد البوليمر ، مثل الخواص الميكانيكية والفيزيائية غير كافية. كان الغرض من هذه الدراسة هو تقييم القوة المستعرضة وقابلية البلل PMMA بعد الاختلاط مع جزيئات الزركونيا و PMMA المبلمرة [ZP] كمواد مالئة بنسبة مختلفة. المواد والأساليب: تم اقتراح مجموعتين وفقا لإضافة ZP بنسب مئوية مختلفة إلى ؛ المجموعة A مع 2 ٪ من ZP والمجموعة B مع 4 ٪ من ZP. كانت المجموعة الضابطة بدون إضافة ZP. تم تحضير مسحوق ZP وخلطه مع مسحوق PMMA بالوزن بنسبتين مختلفتين 2٪ و 4٪ [1.2 ميكرومتر و 30٪ ZrO و 0.69 ميكرومتر و 70٪ p-PMMA]. لبلمرة العينات ، تم استخدام إجراء المعالجة الحرارية المعتاد باستخدام حمام مائي ، لكل من اختبارات قوة المرونة وقابلية البلل. تم تحليل البيانات من الدراسة باستخدام تحليل التباين أحادي الاتجاه (ANOVA مع اختبارات Tukey's HSD و Dunnett's T3 اللاحقة) مع قيمة P معنوية تبلغ (p <0.05) ..   وكانت النتائج زيادة معنوية في قوة المرونة المستعرضة لوحظت مع إضافة مسحوق ZP إلى PMMA بنسبة 2٪. بينما حدث انخفاض كبير بنسبة 4٪. لوحظت زيادة كبيرة في قابلية البلل بنسبة 2٪ و 4٪. مزيج من زركونيا وجزيئات PMMA المبلمرة المستخدمة كحشو الأسنان في 2 ٪ و 4 ٪ بالوزن. تعزيز وتقليل القوة المستعرضة على التوالي ، في حين عززت قابلية البلل مع زيادة التركيز. الكلمات المفتاحية: بولي ميثيل ميثاكريلات (PMMA) ، زركونيا ، PMMA مبلمر ، قوة المرونة وقابلية للبلل.

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Publication Date
Sun Jun 12 2011
Journal Name
Baghdad Science Journal
The optical properties of Poly methyl methacrylate (PMMA) polymers doped by Potassium Iodide with different thickness
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Films of pure Poly (methyl methacrylate) (PMMA) doped by potassium iodide (KI) salt with percentages (1%) at different thickness prepared by casting method at room temperature. In order to study the effect of increasing thickness on optical properties, transmission and absorption spectra have been record for five different thicknesses(80,140,210,250,320)µm. The study has been extended to include the changes in the band gap energies, refractive index, extinction coefficient and absorption coefficient with thickness.

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Publication Date
Fri Apr 21 2023
Journal Name
Aip Conference Proceedings
Study the contrast of thermal expansion behavior for PMMA denture base, single and hybrid reinforced using the thermomechanical analysis technique (TMA)
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This research investigated the effect of adding two groups of reinforcement materials, including bioactive materials Hydroxyapatite (HA) and halloysite nanoclay and bioinert materials Alumina (AL2O3) and Zirconia (ZrO2), each of them with various weight ratios (1,2,3,4 &5)% to the polymer matrix PMMA. The best ratios were selected, and then a hybrid was preparing Composite red from the best ratios from each group. Thermal properties, including thermal conductivity and Thermomechanical Analysis (TMA) technology, have been studied. The results showed that adding 3% Hydroxyapatite (HA) and 5% halloysite nanoclay to the polymethacrylate (PMMA) mer leads to an increase in thermal conductivity. It was also found from the Thermomechanical Analysis

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Publication Date
Sun Jan 01 2023
Journal Name
Technologies And Materials For Renewable Energy, Environment And Sustainability: Tmrees22fr
Study the contrast of thermal expansion behavior for PMMA denture base, single and hybrid reinforced using the thermomechanical analysis technique (TMA)
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Publication Date
Wed Nov 07 2018
Journal Name
Iraqi National Journal Of Nursing Specialties
The Influence of Ramadan Fasting on Some Hematological and Biochemical Parameters in Healthy Adult Males
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Objective(s): Ramadan is the Holy month of the Muslims, where they are required to abstain from food and drinks
from dawn till the beginning of night. This study was conducted in Ramadan to investigate the effect of fasting on
hematological incidences, lipid profile, renal and liver function tests among healthy adult males.
Methodology: The present study was carried out in Ramadan – 1431 of Higira (August-September 2010). The study
sample was 56 healthy adult males. Five samples of blood were taken at five intervals (Before, at day 1, 15, 28 and
after Ramadan). Estimation was done for hematological markers, (hemoglobin, white blood cells count, platelet
count); renal function tests (blood urea, serum uric acid, serum

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Publication Date
Wed Sep 19 2018
Journal Name
Biomedical And Pharmacology Journal
Influence of Silver Nanoparticles on the Specific Properties of Acrylic Resin for Ocular Prosthesis
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Scleral acrylic resin is widely used to synthesize ocular prosthesis. However, the properties of this material change over time, thus requiring the prosthesis to be refabricated. Many studies were conducted to improve these properties by reinforcing this material with nanoparticles. This study aims to evaluate the effect of silver nanoparticle powder on the mechanical properties (transverse flexural strength, impact strength, shear bond strength, surface microhardness, and surface roughness) of scleral acrylic resin used for ocular prostheses. Two concentrations were selected from the pilot study and evaluated for their effects on scleral acrylic resin properties. According to the pilot study, 0.01 and 0.02wt% AgNPs powder improved

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Publication Date
Thu Jan 01 2015
Journal Name
International Journal Of Science And Research
Synthesis and Spectroscopic Characterization of some Mixed Schiff Base Complexes
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Publication Date
Wed Jul 01 2020
Journal Name
Iraqi Geological Journal
THE EFFECT OF SOME MATERIALS ON FUNNEL VISCOSITY READING IN WATER BASE MUD
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Publication Date
Tue Sep 12 2017
Journal Name
Nucl Sci Tech
Investigating the influence of gamma ray energies and steel fiber on attenuation properties of reactive powder concrete
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Publication Date
Tue Sep 12 2017
Journal Name
Nuclear Science And Techniques
Investigating the influence of gamma ray energies and steel fiber on attenuation properties of reactive powder concrete
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Publication Date
Mon Mar 08 2021
Journal Name
Baghdad Science Journal
Effect of growth regulators on sex expression and some quantitatve properties
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This study was conducted in an orchard pomegranate's Department of Horticulture College of Agriculture, University of Baghdad for two seasons 1999-2000 on cultivars pomegranate Salimi and narrators seedless to study the effect spraying Nizant growth in sex ratio of flowers and recipes flowering and winning was selected 27 trees per class 15 years old planted

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