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دراسة الخواص البصرية والتركيبية لاغشية Fe?O? : Al المحضرة بطريقة التحلل الكيميائي الحراري == Study of Optical And Structural Propertes of Fe?O? : Al Thin Films Prepared By Chemical Spray Pyrolysis Method

اسم المؤلف: لمى لفتة راهي
اسم المشرف: خضير عباس مشجل
الموضوع العام: علوم الفيزياء
السنة: 2013
الموضوع الدقيق: الفيزياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: حضرت اغشية اوكسيد الحديديك ( Fe?O? ) غيرالمشوبة والمشوبة بالالمنيوم (Al) باستخدام طريقة التحلل الكيميائي الحراري على قواعد من الزجاج وبتركيز (0.1) مولاري وبدرجة حرارة القاعدة (400?C) وبنسب حجمية مختلفة %(2,4,6,8).تمت دراسة الخواص التركيبية والبصرية، اذ | In this research Iron Oxide and AL doped Iron Oxide thin films were prepared using Chemical spray pyrolysis technique at (0.1 mol) on glass substrate at a temperature of (400?C) with volumetric concentration (2,4,6,8)%.The optical and structural properti

دراسة تاثير تشبع الاقطاب المغناطيسية اللاتقليدية على الخواص الشيئية == Influnce Investigation of The Unconventional Magnetic Polepieces on The Objective Properties

اسم المؤلف: محمد جمعة حيدر الشمري
اسم المشرف: حسن نوري العبيدي
الموضوع العام: علوم الفيزياء
السنة: 2008
الموضوع الدقيق: الفيزياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: في هذا البحث تم اجراء دراسة نظرية - حاسوبية تتضمن جزئين رئيسين. يتناول الاول منهما استخدام انموذج Gauss كدالة هدف في توليف العدسات المغناطيسية ثنائية القطب المتناظرة. افرزت هذه الدالة ثلاث متغيرات امثلية وهي القيمة العظمى لكثافة الفيض المغناطيسي، عرض ال | In this work, a theoretical - computational investingation have been carried out which compramize on two main parts. the first one deals with the using Gauss's model as a target function in synthesize symmetrical double polepieces magnetic lenses. This

تطوير مرشحات رقمية لتحسين الصور الطبية == Adaptive Digital Filters For Medical Images Enhancement

اسم المؤلف: فلاح عابر بيده البيضاني
اسم المشرف: زياد محمد عبود
الموضوع العام: علوم الفيزياء
السنة: 2014
الموضوع الدقيق: الفيزياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تعد الضوضاء المرافقة للصور الطبية من جملة المشاكلات التي تواجه عملية تشخيص الامراض بواسطة هذه الصور، فضلا عن عدم جودة الصور بسبب الاضاءة والتباين المطلوبين، لانها تجعل عملية تفسير الصور الطبية الناتجة وتحليلها عملية صعبة، وتقلل من الفائدة المرجوة منها، ل | The noise accompanying the images medical among the problems faced by the process of diagnosing diseases by these images, as well as the lack of quality images because of the brightness and contrast wanted, they make the process of interpretation and anal

دراسة نظرية لتحديد افضل قدرة مستحصلة في منظومة القدرة التناضحية المفتوحة == Theoretical Study And Optimization of An Open Cycle Osmotic Power Process

اسم المؤلف: مضر صباح حميد
اسم المشرف: عادل عبيد شريف الحسيني | احمد فرحان عطوان
الموضوع العام: علوم الفيزياء
السنة: 2014
الموضوع الدقيق: الفيزياء
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: A great quantity of renewable energy can be potentially generated when waters of different salinities are mixed together. The harnessing of this energy for conversion into power can be accomplished by means of the Pressure Retarded Osmosis (PRO). This tec

الخصائص الميكانيكية الكهربائية والحرارية لمتراكبات البوليمر - انابيب الكاربون النانوية == Polymer - Carbon Nanotube Composites Mechanical, Electrical And Thermal Properties

اسم المؤلف: فاطمة احمد خلف
اسم المشرف: نجيبة عبد الله حسن الحمداني | طارق سهيل نجم
الموضوع العام: علوم الفيزياء
السنة: 2014
الموضوع الدقيق: الفيزياء
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تعتبر البوليمرات ذات الاساس البوليمري من اهم المتراكبات بسبب قابليتها على الاندماج مع عدد من مختلف المواد. تم التركيز في هذه الدراسة على تطوير ودراسة خصائص متراكبات نانوية متكونة من الراتنج epoxy)) المتصلد حراريا كمادة اساس مضاف اليها الانابيب الكاربوني | Polymer matrix composites (PMCs) are one of the most important composites materials due to their ability to incorporate a number of different materials. This study focuses on development and characterization of thermosetting resin epoxy based nanocomposit

تصنيع وتوصيف خلايا شمسية مرنة == Fabrication And Characterization of Flexible Solar Cells

اسم المؤلف: علي محسن عبد الحسين اللامي
اسم المشرف: زينب عبد السلام الرمضان | فلاح ابراهيم العطار
الموضوع العام: علوم الفيزياء
السنة: 2014
الموضوع الدقيق: الفيزياء
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تعد الانظمة الفوتوفولتائية من مصادر الطاقة النظيفة والتي بدات تاخذ مساحة مهمة من البحث، ان الاغلبية من الخلايا الشمسية تتميز بكونها صلبة ولم يراعى فيها عامل المرونة, لذا توفر الانظمة الفوتوفولتائية المرنة عدة ميزات في مجال سهولة النقل, مقاومة الكسر وخفة | As a source of clean, remote energy, photovoltaic (PV) systems are an important area of research. The majority of solar cells are rigid materials with negligible flexibility. Flexible PV systems possess many advantages, such as being transportable, unbrea

تحضير ودراسة بعض الخصائص الفيزيائية للمتراكب البوليمري النانوي PMMA/ZrO2 == Prepration And Studay Some Physical Properties of Polymeric Nano Compsite (PMMA / ZrO2)

اسم المؤلف: نور ظايف حايف
اسم المشرف: نجيبة عبد الله حسن الحمداني
الموضوع العام: علوم الفيزياء
السنة: 2015
الموضوع الدقيق: الفيزياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تم في هذا البحث تحضير المتراكبات النانوية للبوليمر المطاوع للحرارة بولي مثيل ميثااكريلايت (PMMA) والمدعم بالجسيمات النانوية اوكسيد الزركونيوم ( ZrO2), وبحجم حبيبي (40 - 50nm) وبكسور وزنية مختلفة) wt%1,1.5,2.5,3,5(0, باستخدام الكلوروفورم كمذيب بطريقة صب ال | In this research, nanocomposites of thermoplastic polymer (Poly Methyl Methacrylate, PMMA) and nanoparticles reinforcement (Zirconium Oxides, ZrO2) have been fabricated with grain size (40 - 50nm) with different weight fraction (0, 1, 1.5, 2.5, 3 and 5 wt

تحضير ودراسة اغشية ZnO : Mn ذات التركيب النانوي بتقنية الترسيب البخاري الكيميائي تحت الضغط الجوي الاعتيادي == Preparation And Study of Nanostructure ZnO : Mn By Atmospheric Pressure Chemical Vapor Deposition Technique

اسم المؤلف: هبة راشد شاكر
اسم المشرف: صلاح قدوري هزاع
الموضوع العام: علوم الفيزياء
السنة: 2014
الموضوع الدقيق: الفيزياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تم في هذا البحث تصميم وتصنيع منظومة الترسيب البخاري الكيميائي عند الضغط الجوي الاعتيادي ذات الجدار البارد محليا, وتشغيل المنظومة للحصول على افضل غشاء بواسطة تغيير ظروف التشغيل من حيث درجة حرارة القاعدة, زاوية ميلان القاعدة, موقع القاعدة داخل المنظومة, ك | In this research, atmosphere pressure chemical vapor deposition system, with cold wall has been designed and locally manufactured. This system operated to get the best thin film by changing the conditions of performing such as; substrate temperature, slop

دراسة تاثير السمك والتركيز على الخصائص الكهربائية والبصرية لـ بولي مثيل ميثاكريلات المشوب بملح التيتانيوم TiCl3 == Study The Influnce of Concentration And Thickness on Electrical And Optical Properties of PMMA / Ti Cl3 Salt Composite

اسم المؤلف: فاضل تركي معن
اسم المشرف: زينب عبد السلام الرمضان
الموضوع العام: علوم الفيزياء
السنة: 2009
الموضوع الدقيق: الفيزياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تم في هذا البحث تحضير البوليمر بولي مثيل ميثاكريلات PMMA العازل اللدائني الشفاف بعملية بلمرة الاضافة الحجمية بواسطة الجذور الحرة باضافة البادئ بنزول بيروكسايد الى المونومير MMA.تم قياس اللزوجة باستخدام جهاز قياس اللزوجة عن طريق اخذ تراكيز مختلفة من النمو | In this research, The preparation of poly methyl methacrylate PMMA (the transparent plastic insulator) by polymerization the added volume by free radicals after adding the initator Benzoyl peroxide to the MMA monomer. The viscosity were measured by viscom

دراسة الخصائص البصرية والتركيبية لاغشية cdo الرقيقة المحضرة بطريقة الترسيب بالحمام الكيميائي == Study The Optical And Structural Properties of CdO Thin Films Prepared By Chemical Bath Deposition Method

اسم المؤلف: كرار مهدي صالح
اسم المشرف: فاطمة ياسين محمد
الموضوع العام: علوم الفيزياء
السنة: 2015
الموضوع الدقيق: الفيزياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: حضرت اغشية اوكسيد الكادميوم (CdO) الرقيقة من مادة كلوريد الكادميوم المائية (CdCl2.2H2O) ذات الوزن الجزيئي (201.33g/mol) وبتركيز مولاري (0.1M) على قواعد زجاجية بدرجة حرارة الغرفة(RT) بطريقة الترسيبب بالحمام الكيميائي. وقد تم دراسة تاثير السمك (t=127.35,241 | Thin films of cadmium oxide (CdO) have been prepared from 0.1M Cadmium Chloride dehydrate (CdCl2.2H2O) with molecular weight 128.4g/mol on glass substrates at room temperature (RT) by chemical bath deposition method (CBD). The influence of thickness (t=12

الخواص التركيبية والبصرية لاغشية Fe2O3 - NiO المحضرة بطريقة التحلل الكيميائي الحراري == The Structure & Optical Properties of (Fe2O3 - NiO) Thin Films Prepared By The Chemical Spray Pyrolysis

اسم المؤلف: نورا جاسم محمد جبر
اسم المشرف: نادر فاضل حبوبي
الموضوع العام: علوم الفيزياء
السنة: 2014
الموضوع الدقيق: الفيزياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: حضرت اغشية اوكسيد الحديديك ( Fe2O3 ) واغشية اوكسيد الحديديك الممزوجة باوكسيد النيكل NiO)) من المحاليل المائية لكلوريد الحديد الثلاثي (FeCl?.6H2O) وكلوريد النيكل (NiCl2.6H?O) بنسب مزج (% 10,20,30,40,50) بطريقة التحلل الكيميائي الحراري على قواعد زجاجية بدرج | Ferric Oxide (Fe2O3) and Nickel oxide (NiO) Mixed with Ferric Oxide thin films were prepared from an aqueous solution of [FeCl¬3.6H2O] Nickel chloride [NiCl2.6H?O] in volumetric concentration (10,20,30,40,50%) by chemical spray pyrolysis method onto glass

تصميم مضخة هجينة شمسية - جيوحرارية == Design of Hybrid Solar - Geothermal Heat Pump

اسم المؤلف: علاء حسين شنيشل السوداني
اسم المشرف: احمد فرحان عطوان | نصير كريم قاسم السوداني
الموضوع العام: علوم الفيزياء
السنة: 2014
الموضوع الدقيق: الفيزياء
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: مصادر الطاقة التقليدية مضرة بيئيا على العكس من مصادر الطاقة المتجددة. سعى العالم سوية في نهاية القرن الماضي الى تشخيص مشاكل تغير المناخ الذي ادى بدوره الى التفكير في سبل حفظ الطاقة والتقليل من الانبعاثات. تعتبر طاقة الجيوحراري (Geothermal energy) من الطاق | Conventional energy resources are environmentally harmful unlike renewable energy resources. At the end of the last century the world came together to address the problems of climate change; which led to the thinking of ways to conserve energy and reduce

الخزن الموسمي للطاقة الشمسية الحرارية : دراسة نظرية == Theoretical Study of Seasonal Storage Thermal Solar Energy

اسم المؤلف: فاضل محمود عليوي
اسم المشرف: احمد فرحان عطوان | نصير كريم قاسم السوداني
الموضوع العام: علوم الفيزياء
السنة: 2014
الموضوع الدقيق: الفيزياء
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: يتناول هذا البحث تخزين الطاقة الشمسية الحرارية الفائضة في فصل الصيف ( من ايار الى تشرين الاول) في داخل التربة، للاستخدام لاحقا ( في فصل الشتاء) للحد من استهلاك العالي للطاقة المستخدمة وكذلك لتقليل انبعاث غاز ثاني اوكسيد الكاربون. استخدم نموذج شبه ثلاثي ال | This research deals with storage of the thermal solar energy in the soil in summer season (from May to October) for latter utilization (in winter) for reduce the energy consumption. The quasi - three - dimensional model and finite line source model are us

دراسة تاثير البروبايويك في تكوين الغشاء الحيوي وانتاج البروتيز لبكتريا Pseudomonas aeruginosa المعزولة من اخماج الحروق والجروح == Study The Effect of Probiotic On Biofilm Formation And Production Protease Enzyme By Pseudomonas Aeruginosa Isolated From Contaminated Burns And Wound

اسم المؤلف: علا عبد الكريم كاظم النعيمي
اسم المشرف: منيرة جلوب اسماعيل العبادي | ضيماء محمود ابراهيم
الموضوع العام: علوم الحياة
السنة: 2015
الموضوع الدقيق: الاحياء المجهرية
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: he study includes the collection of 70 burns and wound swabs from patients of different hospitals, in Baghdad area, for the period from November 2013 to February 2014. 2) 31 isolates characterized as Pseudomonas aeruginosa 9 (45%) from wound and 22 (78.57%) from burn swabs, depending on the characteristics of the colonies phenotypic and microscopic when grown in differential selective media, as well as biochemical tests todiagnose isolates, Then the identification of these species were confirmed by using the system (GN I Card) using Vitek 2 device complementary step.3) The study includes sensitivity test towards 16 antibiotics for each species by using the system (AST Card) using Vitek 2 device, and the isolates ware Multi drug resistance, As results all isolates were resistant by 100 % for each of Piperacillin, Ticarcillin, Ticarcillinclavoulanic acid, Cefazolin, Ceftriaxone and Tigecycline. All strains were less resistance to Ceftazidime with percentage 50%. 4) All the isolates of Pseudomonas aeruginosa with percentage %100, have ability to produce protease enzyme.5) This study was use tow methods of biofilm formations seen in P. aeruginosa, Micro - titer plate method (MTP) and Tube method (TM), Results revealed that MTP was found to be more sensitiveand specific method for biofilm detection than TM. 6) Well diffusion method revealed the inhibitory effect of bacteria Lactobacillus acidophilus, Lactobacillus rhamnosus GG and its supernatants in the growth of bacteria Staphylococcus aureus and P. aeruginosa, and was the supernatant of L. rhamnosus GG isthe largest inhibitory effect on the growth of S. aureus and P.aeruginosa with inhibition diameter 32 and 34 mm respectively, while the inhibition of growth by supernatant of L. acidophilus diameter 25 and 27 mm respectively. 7) Estimated the amount of protein in each of the biosurfactant and bacteriocine producers of L. rhamnosus GG bacteria concentration of 74, 54 Mg/mL respectively, while their concentration in bacteria L. acidophilus 44, 40 Mg / mL, respectively.8) Found that the bacteriocine product of bacteria L. rhamnosus GG and L. acidophilus GG have inhibitory effect on ability of P. aeruginosa to produce the enzyme protease, and the absence of this effect in the Biosurfactants the product of these two types.9) The biosurfactant product from L. rhamnosus GG showed inhibitory effect greater than the effect of the biosurfactant product from L. acidophilus to inhibition (production of biofilm and adhesion to epithelial cells).10) studied the suspension's effect of L. acidophilus and L. rhamnosus GG in contrived injuries wounds in mice contaminated with P. aeruginosa, Positive results have been shown to be affected by the contaminated bacteria injuries wounds.

دراسة تصنيفية لحشرات عائلة الخنافس الرواغة Staphylinidae : Coleoptera في بعض محافظات العراق

اسم المؤلف: كاظم عادل هادي
اسم المشرف: سعدون ابراهيم اسماعيل
الموضوع العام: علوم الحياة
السنة: 2015
الموضوع الدقيق: الحيوان - الحشرات
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:

دراسة مقارنة للتاثير السمي للزنبور الاحمر Vespa Orientalis L والزنبور الاصفر Polistes Olivaceaus (De Geer) (Hymenoptera : Vespidae على تحلل كريات الدم الحمراء والتخثر لدى الانسان == Poison Effects of Red Wasp Vespa Orientalis L. And Yellow Wasp Polistes Olivaceaus (De Geer) (Hymenoptera : Vespidae) On The Decomposition of Red Blood Cells And Coagulation In Humans

اسم المؤلف: شهد فلاح عباس
اسم المشرف: سعدون ابراھیم اسماعیل | محمد عبد الرزاق الصوفي
الموضوع العام: علوم الحياة
السنة: 2014
الموضوع الدقيق: الحيوان - الحشرات
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: To study the impact of toxic of the the Red Wasp Vespa orientalis L. and yellow wasp Polistes olivaceaus (De Geer) from family (Vespidae) the decomposition of red blood cells and clotting in humans. Were collected 508 insect Red wasp was where the number of workes 390 insect the yellow wasp gathered 539 insect where the number of worker 418 insect, and the diagnosis was confirmed based on the taxonomic keys and professors speclalized in the natural history museum and then extracting machine stinging for poisonWasp red and yellow toxin were purified by gel filtration throw Sephacryl S - 200 were obtained on three peaks of proteins, and when estimated the activity of lysis and clotting for peaks separate P1, P2 and P3 for wasp red toxin, the lysis activity of separate P1 was 98% of the poison origin activity and the clotting time was 47.3 minutes, while the lysis activity of separate P2 was 62% of the poison origin activity and the clotting time was 27.53 minutes, and the lysis activity of separate P3 was 29% of the poison origin activity and the clotting time was 13.67 minutes, so P1 separate from Wasp red poison was selected to purification and study the molecular characteristics, while when estimated the activity of lysis and clotting for peaks separate P1, P2 and P3 for wasp yellow toxin, the lysisactivity of separate P2 was 91% of the poison origin activity and the clotting time was 43.8 minutes, while the lysis activity of separate P1 was 49% of the poison origin activity and the clotting time was 19.28 minutes, and the lysis activity of separate P3 was 29% of the poison origin activity and the clotting time was 7.52 minutes, so P2 separate from wasp red poison was selected to purification and study the molecular characteristics The molecular weight of wasp red and yellow toxin the protein cm wasp red toxin P1 was 22387 Da and wasp yellow toxin P2 was 22382 Da using the gel filtration Sephacryl S - 200, while the carbohydrates content were 60.057 and 44.460 mg/ ml for wasp red P1 and yellow P2 toxin respectively as determined by phenol - sulfuric acid method, and type of link between carbohydrates and protein in the separate P1 and P2 investigating by using gel filtration Sephacryl S - 200 and absorbance at 280 and 490 nm.The percentage of iron in wasp red P1 and yellow P2 toxin were 0.88 and 0.44 ppm respectively as determined by atomic absorption, the contain proteins separate P1 and P2 on the iron were investigating by using gel filtration Sephacryl S - 200 and absorbance at 280 and 557 nm. The optimum pH of lysis and clotting activity for wasp red toxin P1 was 6.5, while lysis activity was decrease in pH 4 and 8 to be 38 and 79% respectively from its original activity, and clotting time was decreased from 47.3 min at optimum pH to be 17.9 and 37.3 min at pH 4 and 8, respectively, it was noted that wasp red toxin P1 was constant in the pH range of lysis activity from 6 - 7.5, but it lost 67 and 25% from its original activity at pH 4 and 8 respectively, while the clotting time was constant in the pH range from 6 - 7.5, but it decreased in pH 4 and 8 to be 15.6 and 35.4 minutes respectively The optimum pH of lysis and clotting activity for wasp yellow toxin P2 was 6.5, while lysis activity was decrease in pH 4 and 8 to be 18 and 37% respectively from its original activity, and clotting time was decreased from 48.8 min at optimum pH to be 8.7 and 35.6 min at pH 4 and 8 respectively, it was noted that wasp red toxin P2 was constant in the pH range of lysis activity from 5.5 - 8, but it lost 74 and 19% from its original activity at pH 4 and 8 respectively, while the clotting time was constant in the pH range from 6 - 7.5, but it decreased in pH 4 and 8 to be 12.6 and 39.5 minutes respectively The results for optimum stability temperature of lysis and clotting activity for wasp red toxin P1 refer to increase activity by increasing the action temperature until it reached a maximum at a temperature 35oC, then lysis activity was decreased to be about 4% of its original activity at 80oC, while the clotting time was decrease from 48.8 minutes at the optimum temperature to be 1.8 minutes at 80oC, it was noted that the lysis and clotting activity were stabile at 35oC for 30 min, but it is beginning to decrease with increasing temperature to loses 84% of its original lysis activity at 80oC, and the clotting time was decreased from 47.3 min at 35oCto be 2.3 min at 80oC.The results for optimum stability temperature of lysis and clotting activity for wasp yellow toxin P2 refer to increase activity by increasing the reaction temperature until it reached a maximum at a temperature 35oC, then Lysis activity was decreased to be about 8% of its original activity at 80oC, while the clotting time was decrease from 48.8 minutes at the optimum temperature to be 3.9 minutes at 80oC, it was noted that the lysis and clotting activity were stabile at 35oC for 30 min, but it is beginning todecrease with increasing temperature to loses 98% of its original Lysis activity at 80oC, and the clotting time was decreased from 48.8 min at 35oC to be 5.3 min at 80oC.The results refer to found a relationship between the influence of the wasp type and dose on the red blood cells lysis degree in males and females, it was observed that the concentration had a significant effect (p<0.05) in the red blood cells lysis degree in females, it was 0.401 at concentration 100% for wasp red toxin P1, while it was 0.331 at the same concentrate for wasp yellow toxin P2, the concentration also had a significant effect (p<0.05) in the red blood cells lysis degree in males, it was 1.020 at concentration 100% for wasp red toxin P1, while it 0.842 at the same concentrate for wasp yellow toxin P2, also it refer to found a significant effect (p<0.05) between the effect of the wasp red P1 and yellow P2 toxin and dose on the red blood cells clotting time in females, itwas 46.80 min at concentration 100% for wasp red toxin P1, while it was 46.20 min at the same concentrate for wasp yellow toxin P2, the concentration also had a significant effect (p<0.05) in the red blood cells clotting time in males, it was 47.80 min at concentration 100% for wasp red toxin P1, while it 40.47 min at the same concentrate for wasp yellow toxin P2, there was no significant effects for blood clotting time when making a comparison between the wasp red P1 and yellow P2 toxin for eachconcentration in females and males. The compared between red blood cells clotting time due the wasp red P1 and yellow P2 toxin dose in females and males did not refer to found a significant effect (p<0.05), the clotting time for wasp red P1 was 46.80 and 47.80 min at concentration 100% for females and males respectively, while the clotting time at concentration 6.25% was 17.30 and 17.10 min for females and males respectively, whilst the clotting time red blood cells due wasp yellow P2 toxin in females was 46.20 min and 47.40 min in males at concentration 100%, and it was 17.00 min in females and 17.10 min in males at concentration 6.25%.

دراسة تصنيفية لعويلة الخنافس البرغوثية Alticinaeمن عائلة Chrysomelidae ورتبة غمدية الاجنحة Coleoptera في بعض محافظات العراق == Taxonomic Study On The Flea Beetles (Coleoptera : Chrysomelidae : Alticinae) In Some Provinces of Iraq

اسم المؤلف: رغد عـبيد خضير
اسم المشرف: سعدون ابراهيم اسماعيل
الموضوع العام: علوم الحياة
السنة: 2014
الموضوع الدقيق: علوم الحياة
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تناول البحث لهذه الرسالة دراسة تصنيفية لعويلة الخنافس البرغوثية Alticinae في بعض محافظات العراق، علما ان هذه العويلة لم تدرس تصنيفيا في العراق.اختير النموذج Longitarsus ballotae Marsham. لتجسيد صفات العويلة. ولقد درست الاجزاء الرئيسة للجسم وهي الراس والص | The Subject of thesis is a taxonomic study of Subfamily Alticinae in some provinces of Iraq. Knowing that this Subfamily has not been studied taxonomically in Iraq.Was chosen as the model for Longitarsus ballotae Marsham. To embody the gualities of the Subfamily. The detailed study of the head, thorax, abdomen and their appendages was made to evaluate the reliability of the external characters in classifying the species of the Subfamily.There are eight genera and thirteen species for these Subfamily The species are : - Altica deserticola Weise.Aphthona fuentei Reitter.Aphthona sp. Chaetocnema montenegrina Heikertinger.Chaetocnema persica Baly. Epitrix atropae Foudras.Hermaeophaga ruficollis Lucas.Longitarsus ballotae Marsham.Longitarsus membranaceus Foudras.Longitarsus reichei Allard. Longitarsus succineus Foudras.Phyllotreta nemorum Linnaeus.Podagrica fuscicornis Linnaeus.6 Species Register in Iraq are : - Chaetocnema montenegrina Heikertinger.Epitrix atropae Foudras. Longitarsus succineus Foudras.Longitaarsus membranaceus Foudras.Podagrica fuscicornis Linnaeus.Two species Taxonomic keys were designed and developed to is olate the genera of Subfamily Alticinae, sa wellas the genera mentioned and studied in this thesis for each species.

كفاءة التنظيف لمبرد XP - endo Finisher بالمقارنة مع انظمة الارواء بالتردد الصوتي والتردد فوق الصوتي : دراسة خارج الجسم == Cleaning Efficiency of Xp - Endo Finisher File In Comparison With Sonic And Ultrasonic Irrigation Systems (An In Vitro Study)

اسم المؤلف: مهند غازي عزاوي
اسم المشرف: جمال عزيز مهدي
الموضوع العام: طب الاسنان
السنة: 2016
الموضوع الدقيق: معالجة الاسنان
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: This in vitro study was conducted to evaluate and compare the efficiency of XP - endo Finisher, EndoActivator sonic irrigation system and the NSK Varios ultrasonic irrigation system in removing dentin debris at three levels of root canals and to compare the percentage of dentin debris among the three levels for each irrigation system. Sixty freshly extracted upper molar teeth with straight palatal root canals were used in this study. All canals were prepared with ProTaper NEXT rotary files to size X4, 1mm from the anatomic apex with irrigation of 1 ml 2.0% NaOCl between the files. After that the samples were randomly distributed into three groups of twenty samples each, irrigated with 1 ml 2.0% NaOCl, followed by irrigant activation for 60 seconds with three different irrigation systems; group one, by using the XP - endo Finisher; group two, by sonic irrigation using the EndoActivator system; and group three, by ultrasonic irrigation using the NSK Varios, then all the groups received a final rinse of 5 ml 2.0% NaOCl. After the final rinse, the roots were split longitudinally into two parts and photographed with a professional digital camera. The digital images were then transferred into a computer and opened in Adobe Photoshop CC 2015 software and the canal was magnified 200x. The percentage of dentin debris remaining at the apical level (0 - 3mm), the middle level (3 - 6mm) and the coronal level (6 - 9mm) was calculated by dividing the number of pixels occupied by the dentin debris at each level by the number of pixels representing the entire canal area. Data were analyzed statistically by ANOVA and LSD at 1% and 5% significant levels. This study showed that cleaning the canal with the XP - endo Finisher or NSK Varios ultrasonic irrigation system resulted in significantly cleaner canals (P<0.01) than the EndoActivator sonic activation system at all canal levels. The XP - endo Finisher resulted in cleaner canals than the NSK Varios ultrasonic irrigation system at all levels, but the difference is not statistically significant (P>0.05). The apical level of all the canals showed a greater amount of dentin debris (P<0.01) compared to the middle and coronal levels, regardless of the irrigation device used.

تحليل القوى المستقرة لثلاثة انواع مختلفة من المواد الراتنجية بطريقة عملية وعددية == Static Stress Analysis For Three Different Types of Composite Materials Experimentally And Numerically

اسم المؤلف: محمد وائل سعيد
اسم المشرف: حكمت عبد الرحيم الغراوي
الموضوع العام: طب الاسنان
السنة: 2016
الموضوع الدقيق: معالجة الاسنان
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: t is important to analyze and compare the stresses induced in different composite material types during load application to know which type of composite will behave as preferred under the loading in the same circumstances. This study aimed at measuring and comparing the stress induced in Filtek ™ Z350 XT (3M ESPE) composite, Tetric EvoCeram ® (ivoclar vivadent) composite and BRILLIANT ™ NG (Coltène/Whaledent) composite experimentally and numerically.Experimental analysis included cavity preparation in the Brass block with a concave (U - shape) cavity which represent a proximal cavity preparation. This cavity was used as a mold for sample preparation. The internal line and point angles of the cavity (mold) were rounded and the dimensions of the cavity (mold) were 10mm × 10mm × 10mm (Total height of the box × Width of the top side of box × Length of the top side of box). The internal diameter of “U” was 5 mm at the base of the box. The mold was used to prepare forty five samples, fifteen samples for each type of composite material. So, three groups were prepared : Group A filled with Filtek ™ Z350 XT composite material, Group B filled with Tetric EvoCeram ® composite material and Group C filled with BRILLIANT ™ NG composite material.Electrical strain gauge (Tokyo Sokki, Japan) was embedded in composite material horizontally at the same level in each sample. Static load of 50 N was applied perpendicular to the center of the occlusal surface of composite restoration in each sample testing. The strain gauge was connected to a Wheatstone bridge with a signal amplifier which measures the strain during load application and gives the amplified signal from (0 to 4.8 volt) to LabJack data acquisition where a stream software give the final values of strain with the aid of a scaled equation of voltage. Then, the von Mises stress (effective stress) was calculated by using equations. Numerical analysis was done by using ANSYS 16.1 - (2015) (finite element tool) software that was used to create the 3 - Dimensional models represented the same materials and dimensions used experimentally. The physical characteristics of the composite models were inserted in the software which included Elastic modulus and Poisson’s ratio (?). Analysis was selected in a finite element method according to boundary conditions. A mesh size and an element size were estimated during the study. The stresses were calculated at static load of 50 N with the ANSYS 16.1 - (2015) software.The data were analyzed statistically by One - way ANOVA test and Least Significant Difference (LSD) test. One - way ANOVA test and LSD test results showed that there was a highly significant difference (P<0.001) presented between groups A and B, groups A and C and between groups B and group C. The Stress induced in BRILLIANT ™ NG composite after load application was the lowest stress value followed by Tetric EvoCeram ® composite and followed by Filtek ™ Z350 XT composite which was the highest stress value experimentally and numerically.

التسرب المايكروي لنوعين من القشرة الخزفية بوجود وعدم وجود الحشوة الراتنجية تحت جهاز التحميل الدوري == Microleakage of Two Porcelain Laminate Veneers Materials With And Without Composite Filling Under Cyclic Loading

اسم المؤلف: ياسر علي النقيب
اسم المشرف: عمار عطا الله علي السعدي
الموضوع العام: طب الاسنان
السنة: 2016
الموضوع الدقيق: معالجة الاسنان
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: Although investigators have evaluated the microleakage of porcelain laminate veneers, there is insufficient data regarding the durability of porcelain laminate veneers bonded to existing composite fillings. The aim of this study was to evaluate the microleakage of porcelain veneers restorations fabricated from two types of CAD/CAM ceramic blocks bonded to teeth with or without composite class V composite filling.Forty eight sound, crack - free human maxillary first premolar extracted for orthodontic reasons were selected for this study. Teeth were divided randomly into.2 main groups, which further divded into 2 groups (12 sample each). Group A1 : IPS e.max CAD veneers with standardized class V composite filling, Group A2 : IPS e.max CAD veneers, Group B1 : VITA Suprinity veneers with standardized class V composite filling, Group B2 VITA Suprinity veneers. The class V cavities was restored with nanofilled composite (Filtek™ Z350 XT, 3M ESPE). Standard veneer preparations were made using Ceramic veneer burs system (Keramikveneers. de, Komet). All the veneers were milled by CAD/CAM technology (CEREC MC XL, inLab SW 15, Sirona Dental Systems) Composite fillings (groups A1 and B1) were sandblasted with alumina oxide.Porcelain veneers were cemented in place using light - cured resin cement (Rely Veneer Cement, 3M ESPE), Then the specimens were stored at 37? in distilled water for 2 weeks. Then mechanical load cycling (50,000 load cycle of 49 N at 2.5 Hz) and thermocycling procedure (500 cycles of 5 - 55 Co with 20 sec dwell time) were done. The specimens’ crowns were immersed in 2% methylene blue dye for two days, then mounted in clear acrylic before sectioning with a 0.35 mm microtome. Microleakage percentage were recorded using stereomicroscope and ImageJ program. Results were checked for normality of distribution (Kolmogorov - Smirnov test and Shapiro - Wilk test), and were analyzed with twoway ANOVA and independent samples t - tests. Two way ANOVA shows the significant effect of type of ceramic restoration and the highly significant effect of composite filling, however, the interaction between the main factors was non - significant. The results showed that the lowest mean of microleakage percentage was recorded for group A2 (4.6058% ± 1.5091) which considered statistically significant compared to group B2 (6.105%±1.456), and statistically highly significant compared to group A1 (6.6075%±1.3259) while group B1 recorded the highest mean of microleakage percentage (7.3158%±1.38713). In conclusion, the type of ceramic restoration and the presence of class V filling both had significant effects on microleakage of porcelain veneers. IPS e.max CAD veneers had significantly lower microleakage percentages compared to VITA Suprinity veneers. The presence of class V composite filling within the cervical finishing line of porcelain veneers had a highly significant higher microleakage percentage compared to groups without composite filling.

احتمالية حدوث العيوب في عاج الجذر نتيجة لاستخدام انظمة مختلفة من مبارد النيكل تيتانيوم == The Incidence of dentinal root defects caused by different Nickel Titanium instruments

اسم المؤلف: نور الدين علي سعيد
اسم المشرف: ايمان محمد الزقة
الموضوع العام: طب الاسنان
السنة: 2014
الموضوع الدقيق: معالجة الاسنان
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: يعد الاعداد الميكانيكي الاحيائي لقنوات الجذر احد الخطوات الرئيسية لتحقيق حشوة جذر ناجحة بسبب امكانية ازالة الاجسام البكتيرية والحطام المتراكم وتسهيل وضع حشوة الجذر داخل القنوات. الغرض من هذه الدراسة هو لملاحظة ومقارنة احتمالية حدوث العيوب في عاج الجذر نتي | Vertical root fracture and crack formation can be seen in root dentin during and after endodontic procedures. Vertical root fracture is one of the most frustrating complications of root canal treatment, which often results in tooth extraction. The aim of this in vitro study was to compare the effect of different Nickel Titanium instruments (ProTaper Universal, EndoSequence, ProTaper Next and RECIPROC) on the dentinal wall in term of dentinal defects.Seventy - five straight palatal roots of freshly extracted human maxillary first molars teeth were used in this study, the palatal roots were sectioned at 11 mm from the apex and wrapped with two layers of aluminum foil, then placed in the center of elastic silicon mold. Fifteen roots were left unprepared to serve as a negative control group, the remaining 60 roots were divided into 4 groups, each group contained 15 roots : • Group I was prepared by rotary ProTaper Universal system.• Group II was prepared by rotary EndoSequence system.• Group III was prepared by rotary ProTaper Next system.• Group IV was prepared by reciprocating RECIPROC system.All canals were prepared to MAF # 40. After each file size of the (rotary files) or after three pecking motion of the (reciprocating files), the file was removed from the canal and the canal was irrigated with 1 ml of 2% of sodium hypochlorite. All files were cleaned periodically to prevent clogging of flutes during instrumentation. The canal remained patent by insertion size 15 K - file.When the instrumentation was completed, the roots were then embedded in a clear acrylic resin blocks and each root was sectioned into three levels : apical, middle and coronal. All samples were examined from coronal direction under Stereomicroscope. The number and the type of dentinal defects were recorded and classified. The collected data was tabulated and subjected to statistical analysis using chi - square test.The EndoSequence group showed the lowest number of dentinal defects followed by ProTaper Next group and then ProTaper Universal group. The highest number of dentinal defects were observed in RECIPROC group. Chi - square test showed that there were highly significant differences among groups (P < 0.01). The results showed a non - significant difference between EndoSequence and Protaper Next group (p > 0.05), and a significant difference with ProTaper Universal group (P < 0.05) and a highly significant difference with RECIPROC group (P < 0.01). The ProTaper Next group showed a significant difference with ProTaper Universal group and a highly significant difference with RECIPROC groups. There was no significant difference between RECIPROC and ProTaper Universal groups.

انسلاخ المبيضات اللعابي المقاس بواسطة تفاعل البوليميراز المتسلسل الكمي اللحظي كاداة تنبؤ لحصول التهاب المبيضات الفموي عند مرضى الربو المتعاطين لدواء بيكلوميتازون المستنشق == Salivary Candidal Shed Measured By Real Time Quantitative Polymerase Chain Reaction As A Predictor of Oral Candidiasis In Asthmatic Patients On Inhaled Beclomethasone Dp Therapy

اسم المؤلف: نغم قطران رحيم
اسم المشرف: رعد محي الدين حلمي
الموضوع العام: طب الاسنان
السنة: 2014
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: الربو القصبي المزمن يمثل مشكله صحيه جديه في كل العالم وهو عادة يبدا في عمر الطفوله ويبقى المريض في كثير من الاحيان يتعاطى العلاجات المستنشقه مدى الحياة.انتشار الربو القصبي يزداد في كثير من دول العالم مما يجعله احد الامراض المعيقه والمهدده للحياة باعتبا | Asthma is a serious global health problem that usually starts in childhood and continues along patient’s life and most of them have to take inhaled therapy lifelong. The prevalence of asthma is rising in many countries of the world, making asthma one of the most disabling and life threatening diseases effecting patients with different age groups and social classes with variable clinical spectrums and outcomes starting from mild to severe disabling syndrome rendering nonproductive individuals to severe life threatening and sometimes fatal disease. Those patients continue inhaled steroid therapy for long duration, considered by GINA as first line treatment , however such a treatment is associated with local adverse effects on oral tissues, and one of the main concerns is the development of oral candidiasis, a chronic, potentially invasive, infection of oral tissues with fungus candida species resulting in failure of treatment. The scientific interests about such a serious complication have been raised over the past years and debates continued as the candida is considered one of the normal flora of the oral cavity in most of healthy population, however oral candidiasis in pathogenic forms still occur in immunocompromised patients including asthmatics on inhaled corticosteroid therapy.Aim of the study1. To investigate the effect of inhaled corticosteroid therapy in form of Beclomethasone Dipropionate250 microgram/dose CFC free in asthmatic patients on salivary candidal shed estimating by Real Time quantitative Polymerase Chain Reaction (RT qPCR) applied on direct unstimulated saliva samples.2. Evaluation of this shed as prediction of occurrence of oral candidiasis. Patients, Materials and MethodsThis study was conducted at Al Zahraa consultational Asthma and Allergy center - Baghdad Al Karkh Health Directorate from September 2013 to February 2014.The included patients were divided into 3 groups. Group A included asthmatic patients on inhaled Beclomethasone therapy, group B included asthmatic patients that never used any form of inhaled steroid therapy and group C was those asthmatic patients on inhaled Beclomethasone therapy who developed oral candidiasis. All patients were receiving two daily doses. The same exclusion forma was applied to choose Group D who were control healthy individuals. Each included patients and control cases were instructed to give saliva samples in the standard way and samples taken for estimation of candidal count by real time quantitative Polymerase Chain Reaction.Results During the study period, 698 patients were examined, however only 63 patients were included in the study. Those 63 were classified as follows : 28 patients were found on group, 28 were found on group B and only 7 patients were found on group C and 20 cases were selected in group D as a control.Group C patients were having the highest salivary candidal shed (mean=58.7x106 cn/ml) and longest duration of asthma (Mean=2718 days) and longest duration of Beclomethasone therapy (Mean=2224 days) and this was significantly higher than other groups (p<0.05).Group A patients were having the second highest rank after group C in regard of salivary candidal shed and both duration of asthma and Beclomethasone therapy. Inside each group, duration of asthma and duration of Beclomethasone therapy were associated with moderate positive correlation with salivary candidal shed (R>0.5).Age difference between groups were insignificant and age factor had no correlation with salivary candidal shed inside the groups.Discussion : Salivary candidal shed over the groups was directly related to the duration of inhaled Beclomethasone therapy and duration of asthma. They are significantly higher (p<0.01) as we go further from each group to the next, both appear as the reason behind increased candidal shed in groups A and C.The salivary candidal shed curve will gave us a very useful tool for follow up those patients on inhaled steroid therapy ,In addition , predict the risk of developing oral candidiasis and when to interfere prior to the establishment of Oral Candidiasis state as that we have noticed in the group C, in which it was recommended to stop inhaled steroid therapy and the patients would lose the benefits of the therapy.Conclusions1. Resting saliva samples with realtime quantitative PCR was a rapid and accurate tool in diagnosis of oral candidiasis.2. Salivary Candidal Shed could be used as a tool in predicting oral candidiasis in asthmatic patients on inhaled Beclomethasone therapy.3.Longer duration of asthma and longer duration of Beclomethasone therapy were associated with increased salivary candidal shed and established oral candidiasis have the highest amount of shed.4. Candida albicans are present in the oral cavity of any individual of our population

تقيم التسريب الجزني لمركبات الراتنج للحشوات الخلفية سونك فل مركب مستند على السيلورين ومركب نانوفل مستند على الميتاكرليت في : دراسة مقارنة == Microleakage Evaluation of Sonicfill

اسم المؤلف: مهند احمد الحداد
اسم المشرف: حكمت عبد الرحيم الغراوي
الموضوع العام: طب الاسنان
السنة: 2014
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: Resin composites have improved greatly since their introduction and are now the materials of choice for most of the restorations. This study was conducted with aim of comparing in vitro the marginal adaptation of three different, low shrink, direct posterior composites Sonic fill™ (nanohybrid composite), Filtek™ P90 (Silorane - based composite) and Filtek™ Z350 (nanofill composite) of a standardized Class V cavity after thermoal cycling. Sixty sound, freshly extracted human premolars were prepared with standardized Class V cavities. The specimens were divided into three groups of twenty teeth each according to the material used : Group A : The teeth were restored with Sonic fill™ posterior composite unidose capsules, Group B : The teeth were restored with a silorane - based posterior composite (FiltekTM P90), Group C : The teeth were restored with nanofill methacrylate - based composite (Filtek™ Z350 XT).After specimens were stored in distilled water at 37°C for 7 days, all specimens were subjected to thermocycling at (5° to 55 °C), then immersed in 2% methylene blue dye for 24 hours. For each group microleakage at the occlusal and gingival regions was estimated by determining dye penetration using scoring system under steromicroscope (10X). The statistical analysis of the results showed that, Filtek™ P90 silorane based composite exhibited the lowest mean of microleakage, with statistically highly significant difference (P < 0.01) when compared with Sonicfill™ composite and Filtek™ Z350 XT nanofill composite. On the other hand, the results of this study showed that Sonic fill™ composite exhibited no significant difference (P > 0.05) as compared with Filtek™ Z350 XT nanofill composite. Also, the results in this study showed that there is a highly significant difference (P < 0.01) in dye penetration between occlusal and gingival regions for each group

تقييم اصابة المفصل الفكي الصدغي عند مرضى الصدفية باستعمال التصوير المقطعي المحوسب للكشف عن التغيرات المفصلية == Evaluation of The Involvement of The Tempromandibular Joint In Patients With Psoriasis Using Computed Tomography For Detection of Psoriatic Arthritis Changes

اسم المؤلف: منتهى فوزي صالح
اسم المشرف: هاجر ابراهيم عبد الله
الموضوع العام: طب الاسنان
السنة: 2015
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: اضطرابات المفصل الفكي الصدغي تشير الى مصطلح مركب يحتوي على عدة حالات تتضمن المفصل الصدغي,التركيبات المحيطة او كلاهما.اضطرابات المفصل الفكي الصدغي هي مجموعة اعراض معقدة اكثر من كونها حالة معينة واحدة, ويعتقد انها تنتج من عدة عوامل مثل : العوامل الجينية, ال | Tempromandibular disorders is a collective term, embracing several clinical problems involving the muscles of mastication, temporomandibular joint (TMJ), or both.Tempromandibular disorders is a symptom complex rather than a single condition, and it is thought to be caused by multiple factors like : genetic, developmental and metabolic.TMDs form a cluster of related disorders with common symptoms which include localized pain, limited or asymmetric movement, and clicks or grating on opening.Psoriatic arthritis is a chronic inflammatory arthropathy that affects patients with psoriasis. Psoriatic arthritis is most commonly a seronegative oligoarthritis found in patients with psoriasis and therefore occurs more commonly in patients with tissue type HLA - B27. The clinical findings for Tempromandibular Psoriatic arthritis are pain, tenderness, limitation of movement , joint stiffness, clicking as the jaw is opened or closed, difficulty in opening the mouth, locking of the jaw,and crepitations. These findings are essentially the same as for Tempromandibular disorders.• Objective of the study : • To determine the extent of tempromandibular joint involvement in patients with psoriatic arthritis.• To correlate between clinical findings and radiographic finding.Materials and method : In this study 98 patients were selected ,50 male and 48 female, their age ranged between(18 - 68)years. They were collected at Al - yarmook teaching hospital/department of dermatology during the period from ( NOV 2014 - May 2015).They were diagnosed as having psoriatic arthritis by a dermatologist according to (Moll and Wright diagnostic criteria 1973).These patients were sent to rheumatoid factor test RF to exclude the presence of rheumatoid arthritic disease, then the patients were exposed to CT scanning for the Tempromandibular joint in Al - Yarmook teaching hospital for screening the involvement of TMJ with psoriatic arthritis by the presence of any radiographic changes such as erosion, flattening,osteophyte and sclerosis in the condylar head.Results : The result of the study showed that the mean age of psoriatic arthritic patients in TMJ was (44.2) years, and the female percentage was (48.4%) and the male was (51.6%). Psoriatic arthritis in TMJ showed high significance in the unilateral side symptoms (100%) it was significant in patients with positive family history (54.8%), and non significant in the right/left ratio (41.9%). Oligo type was found in twenty six patients (83.9%) with significant p - value. Clinically, all symptoms including clicking, tenderness and tempromadibular joint pain were highly significant, limitation showed (54.8%), TMJ pain showed (64.5%) and tenderness showed (54.8%).Radiologically : CT scan showed sensitivity for erosion in TMJ (54.8%), for osteophyte (32.3%), for condylar flattening (16.1%) and for sclerosis (9.7%) while specificity for all were (100%). Association between clinical symptoms and radiological changes showed non significant correlation. Conclusions : Psoriatic arthritis of TMJ has been found oftenly unilateral (oligo type). Female/ male ratio is about 1 : 1. nearly 50% of patients were having limitation in mouth opening. Most of the patients were having positive family history.The development of psoriatic arthritis in TMJ is related to the duration of the disease. Plaque psoriasis is the most associated type with the psoriatic arthritis in TMJ. Most of patients with psoriatic arthritis show psoriatic nail changes. The most radiographic findings found in patients with psoritic arthritis was erosion in the condylar head. There is association between clinical and radiologic findings for psoriatic arthritis in TMJ.

ضبط الحواف ومقاومة الكسر لاغلفة ال Ceramill Sintron المعدنية المصممة والمصنعة بالحاسوب مكسوة بثلاث انواع مختلفة من الخزف == Marginal Discrepancy And Fracture Resistance of CAD\CAM Ceramill Sintron Metal Copings With Different Porcelain Materials

اسم المؤلف: مصطفى نبيل عبد الغني
اسم المشرف: عمار عطا الله علي السعدي
الموضوع العام: طب الاسنان
السنة: 2014
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: دقة الحواف والقوة، لاي ترميم معوض للاسنان هي صفة مهمة. ويمكن اعتبارعدم تطابق للحواف او قلة القوة سبب مهم يؤدي الى فشل التعويضات الاصطناعية للاسنان.لذلك تم اجراء هذا البحث لغرض تقييم اختلاف ظبط حافات ومقاومة الكسر لتيجان السيراميك المصنعة من اغلفة الC | Marginal fit and strength are important criteria for any restoration; poor marginal fit and low strength may be considered as a source of prosthesis failure. This study was performed to compare the marginal fit changes and facture resistance of metal ceramic crowns constructed from Ceramill Sintron metal coping veneered with three different porcelain veneering materials (Vita Master Koromikos VMK, Willi Geller Creation CC and GC initial MC). Also evaluating the influence of thermocycling on load at fracture value. The method included the use of master brass die which was milled to represent the prepared maxillary central incisor. Sixty metal copings were milled directly using Ceramill Sintron blank, then divided randomly into three groups. Each group consist of twenty metal copings, then veneered with porcelain : VITA for group A, Creation for group B and GC for group C. The marginal gap was measured before and after porcelain veneering for each group using travelling light microscope, then marginal fit changes was calculated. Fracture resistance test was done by Instron®, the master die was duplicated to sixty analogs then each analog was fixed into acrylic base. After that each crown was cemented onto the corresponding die analog using zinc phosphate cement. Ten samples of each group were subjected to compressive loading to fracture and other ten subjected to thermocycling followed by compressive loading to fracture.The result showed that GC group was highly significant different from other tested groups in marginal fit changes, whereas there was no significant different between VITA and Creation group. While there was significant difference among tested group at (P < 0.01) in fracture resistance, and the effect of thermocycling process did not significantly reduce the load at fracture for all groups.This study concluded that GC group present the least marginal fit changes, while the fracture resistance was highest for VITA group follow by Creation then GC. Thermocycling reduce load at fracture but not significantly.
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