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التاثیر البایومیكانیكي للتذریة اللیزریة بواسطة ال (Nd.YAG laser) على الغرسات المصنوعة من التیتانیوم النقي تجاریا : دراسة داخل الجسم == Biomechanical Effect of Nd: YAG Laser Ablation on Commercially Pure Titanium Dental Implant (in vivo)

Author name: نور جمال محمد سعيد الراوي
Supervisor name: باسمة محمد علي حسين
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Baghdad
Language: English
University location: Baghdad
First pages:

تشكيل السطح بالليزر وطلاء غرس التيتانيوم بواسطة البوليمر ايثر كيتون كيتون العالي الاداء : دراسة خارج وداخل الجسم الحي == Laser Surface Structuring and Coating of Titanium Implant with High Performance Poly Ether Ketone Ketone Polymer: (In vitro - In vivo) Study

Author name: اسيل محمد صادق الخفاجي
Supervisor name: ذكرى اسماعيل حمد
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Doctorate
University: University of Baghdad
Language: English
University location: Baghdad
First pages:

تقييم التوافق الحيوي والخواص الميكانيكية لسيليكون الوجه والفكين معزز بجزيئات نيتريد البورون السداسية == Evaluating the Biocompatibility and Mechanical Properties of Maxillofacial Silicone Enhanced by Hexagonal Boron Nitride Particles

Author name: منتظر سلام علي
Supervisor name: فائزة محمد حسين عبد الامير
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Baghdad
Language: English
University location: Baghdad
Key words:
  • Maxillofacial prostheses
  • Maxillofacial silicone
  • Biocompatiblity
  • Mechanical properties
  • Hexagonal boron nitride
First pages:
Abstract: Maxillofacial silicone is the most popular material in the fabrication of maxillofacial prostheses. However, the material did not meet the desired qualities of maxillofacial prosthesis due to mechanical properties limitations. This study aims to evaluate maxillofacial silicone’s biocompatibility after the addition of hexagonal boron nitride (H-BN) particles concerning cytotoxicity and skin irritation, as well as its mechanical properties. Methodology: Eighteen specimens of maxillofacial silicone (VST-50F) incorporated with different percentages of H-BN (0, 0.1, 0.3, 0.5, 0.7, and 1 wt%) were tested for cytotoxicity in vitro by direct contact test. Then, cell viability was determined by cytotoxicity assay. Twelve specimens were applied in vivo to the backs of five rabbits for 4 hours, followed by evaluations of the skin irritation. The experimental groups (control, 0.5 wt%, and 0.7 wt%) were selected after the pilot study. 10 specimens out of 120 specimens were utilized to assess each mechanical property (tear strength, tensile strength, elongation percentage, Shore A hardness, and surface roughness). The specimens were studied using field emission-scanning electron microscope (FE-SEM) with energy dispersive X-ray spectroscopy (EDX) and Fourier transform infrared spectroscopy (FTIR). One-way ANOVA and Tukey’s tests were used to assess the data, with P-value < 0.05 indicating statistical significance. Results: The results revealed a negligible effect of the modified maxillofacial silicone to the cell viability after 72 hours of incubation and there was no skin irritation. The FE-SEM and EDX findings showed evenly dispersed H-BN within the VST-50F silicone. The FTIR revealed no chemical interaction between the silicone and H-BN. Both experimental groups showed a significant increase in tear strength and a significant decrease in Shore A hardness and surface roughness. The 0.5 wt% group showed a non-significant drop in tensile strength and elongation percentage. However, the 0.7 wt% group showed a significant decline. Conclusion and recommendations: This study suggests that maxillofacial silicone is safe up to 1 wt% of H-BN in terms of cytotoxicity and skin irritation. As the percentages of H-BN increased, tear strength improved, whereas tensile strength, elongation percentage, Shore A hardness, and surface roughness were reduced. However, the remaining biocompatibility tests need to be investigated before being used on humans.
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تاثير اضافة اوكسيد اليتريوم النانوي على خصائص مادة السليكون المفلكن بدرجة حرارة الغرفة والمستخدم في تعويضات الوجه والفكين قبل وبعد التعرض لظروف تهريمية == Evaluating the Role of Nano Yttrium Oxide Addition on Room Temperature Vulcanized Maxillofacial Silicone Elastomers Properties Before and After Aging

Author name: ياسر نبيل عبد الرزاق
Supervisor name: فائزة محمد حسين عبد الامير
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Baghdad
Language: English
University location: Baghdad
First pages:

التغير اللوني للصبغات الجافة لمادة تعويضات والفكين المرنه بتاثير الاشعة الفوق البنفسجية == Color Changes In Dry -Pigmented Maxillo- facial Elastomer Effected by Ultra-violet Light

Author name: شهد فاضل بنيان
Supervisor name: اخلاص زيد عون
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: Middle Technical University - College of Health and Medical Technology
Language: English
University location: Baghdad
First pages:

تقييم بعض خواص الميكانيكة والفيزيائية لنوعين من مواد التبطين بعد مزجها بالتركيب المحضر المكون من الزيولايت المحمل بالخارصين والفضة == Evaluation of certain mechanical and physical properties of two types soft lining materials mixed with prepared Silver-Zinc Zeolite composite

Author name: هدى علاء الدين صادق
Supervisor name: اسراء محمد حمودي
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: Middle Technical University - College of Health and Medical Technology
Language: English
University location: Baghdad
First pages:

تاثير طلاء السترونتيوم هيدروكسي ابيتايت النانوي و الفلوراباتيت النانوي على غرسات التيتانيوم التجاري النقي : دراسة بايوميكانيكية ونسيجية == The Effect of Nano Strontium Substituted Hydroxyapatite and Nano Fluorapatite Coating on Commercially Pure Titanium Implants (Biomechanical and Histological Study

Author name: حيدر صبيح حسن
Supervisor name: بيان سليم خلف
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Baghdad
Language: English
University location: Baghdad

بعض خواص مادة قاعدة الطقم الاكريلي المعاملة ضوئيا : دراسة مقارنة == Some Properties of Visible Light-Cured Acrylic Denture Base Materials -A comparative Study-

Author name: الاء عبد الكريم حسين الشيخلي
Supervisor name: سوزه عبد العزيز فرج
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Baghdad
Language: English
University location: Baghdad
First pages:

تحوير پولي مثيل ميثاكريليت باستخدام بعض الاضافات == Modification of Poly Methyl Methacrylate by Using Some Additives

Author name: احمد عاصم سعيد العلي
Supervisor name: طارق ياسين قصاب باشي
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Doctorate
University: University of Al Mosul - Faculty Of Dentistry
Language: English
University location: Mosul
First pages:

تقييم تاثير الاضافات المعدنية النانوية على بعض الخواص الفيزياوية لقاعدة طقم الاسنان المرن == Evaluation the effect of Nano Metallic Additives on physical Properties of Flexible Denture Base Material

Author name: عمار خالد جمال الدين النوري
Supervisor name: نادرة عبد الرضا حاتم | عامر عبد الرحمن طاقة
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Doctorate
University: University of Al Mosul - Faculty Of Dentistry
Language: English
University location: Mosul
First pages:

تقييم تاثير معالجة السطح المختلفة على قوة الربط القصي لنوعين من مواد الاساس مع القشرة الخزفية == Evaluation the effect of different surface treatment on shear bond strength between two types of core materials with veneering ceramic

Author name: مروة حسين عبد الستار
Supervisor name: زهراء نزار الوهاب
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: Middle Technical University - College of Health and Medical Technology
Language: English

مقارنة تقييم تاثير اختلاف اشكال الواصل الشمعي على دقة التطابق وخشونة السطح لسبيكة النيكل كروم == A comparative Evaluation of Different Sprue Shapes on Marginal Fitness and Surface R oughness of Nick el Chromium A lloy

Author name: مريم صبيح حسن
Supervisor name: ايهاب نافع ياسين
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: Middle Technical University - College of Health and Medical Technology
Language: English

تقييم دقة حافات مادة التاج المؤقتة المصنعة بجهاز التصميم والتصنيع الرقمي باستخدام نوعين من ماسح الاسنان المختبري الضوئي باستخدام نوعين من مادة الداي المختلفة (البيك والمعدن) == Assessment of marginal accuracy of CAD/CAM interim crown material by two different types of dental laboratory scanners on different types of die material (PEEK & Metal)

Author name: صفاء عبد الرحمن حسين
Supervisor name: محمد عبد الحسين حامد
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: Middle Technical University - College of Health and Medical Technology
Language: English

تاثير اضافة وتعزيز الياف الزجاجية والمقارنة بين نسب الباودر والسائل على بعض الخواص الميكانيكية للاكريلك المرن == Evaluation the Effect of Glass Fibers Reinforcement and Alteration of Powder/Liquid ratio on some Mechanical Properties of Flexible Acrylic Resin

Author name: زيد عزت عبد المجيد
Supervisor name: اسراء محمد حمودي
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: Middle Technical University - College of Health and Medical Technology
Language: English

تقييم تاثير العامل الزمني واستخدام محاليل الغمر المختلفة المضادة للفطريات على بعض الصفات السطحية لمادة تبطين الاطقم المؤقتة == Evaluation the effect of thermal aging and immersion in different antifungal solutions on some of surface properties of tissue conditioner material

Author name: شيماء حسن فليح
Supervisor name: امال كاظم محمد
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: Middle Technical University - College of Health and Medical Technology
Language: English

مقارنة ثبوتية حافة تعويضة جسر الاسنان المؤقت ومقاومته للتهشم باستخدام جهاز التصميم والتصنيع الرقمي وطريقع التصنيع التقليدية == Comparison of Marginal Fitting and Fracture Resistance of CAD/CAM Interim Bridge and Conventional Interim Resin Bridge

Author name: علاء حسين جاسم
Supervisor name: لطيف عيسى علوان | اخلاص زيد عبود
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: Middle Technical University - College of Health and Medical Technology
Language: English

تقييم تاثير المواد النانوية المعززة للقوة والمعالجة الحرارية على بعض الخواص الميكانيكية والفزيائية على المادة المبطنة المرنة == Effect of grafting and Spraying with Phosphorous and boron on growth yield of fruits, Seed, oil and its components of medical pumpkin .

Author name: زينب طالب كريم
Supervisor name: ليلى موسى عوده
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: Middle Technical University - College of Health and Medical Technology
Language: English

دور سمك البطانة والعصف الرملي على قوة الشد القصبي ما بين مركز الزركون ومادة السيراميك التجميلي == The Role of Liner Thickness and Sandblasting on Shear Bond Strength between Zirconia Core and Veneer Ceramic Material

Author name: مها كريم جبار
Supervisor name: سهى فاضل دليمي
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: Middle Technical University - College of Health and Medical Technology
Language: English

التقـييـم النفـسـي للمريـض قبـل وبعـد العلاج بالتعويضات الاصطـناعية == Psychological Assessment of the Patient Pre and Post Prosthodontic Treatment

Author name: منية محمد نبيل قنديل
Supervisor name: نادرة عبد الرضا حاتم
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Al Mosul - Faculty Of Dentistry
Language: English
University location: Mosul
First pages:

تقييم بعض الخصائص لنواتج الجبسوم ومادة الراتنج الاكريلي باستخدام بعض المضافات وتقنية الموجات الدقيقة == Evaluation of Some Properties of Gypsum Products and Acrylic Resin by the Use of Some Additives and Microwave Technique

Author name: محمد عبد اللطيف عبد الله
Supervisor name: نادرة عبد الرضا حاتم
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Al Mosul - Faculty Of Dentistry
Language: English
University location: Mosul
First pages:

ثبوتية وحركة وقوى السحب لزرعات الاسنان العظمية نوع لولبي ذات قطر 4 و5‚4 ملم : دراسة مقارنة تجريبية == Stability, Mobility and Pull out Forces of Immediate Loaded Endosteal Screw Typ e Dental Implants of 4 and 4.5mm in Diameter (Comparative Experimental Study)

Author name: لؤي نجم عبود
Supervisor name: منذر نجيب قزانجي | محمد جواد عيسى
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Al Mosul - Faculty Of Dentistry
Language: English
University location: Mosul
First pages:

تقييم تاثير بعض غسول طقم الاسنان على لون مواد قاعدة طقم الاسنان الراتنج اكريلية == Evaluation of the Effect of Some Denture Cleansers on the Colour of Acrylic Resin Denture Base Materials

Author name: زينة محمد احمد العباس
Supervisor name: منذر نجيب قزانجي
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Al Mosul - Faculty Of Dentistry
Language: English
University location: Mosul
First pages:

تقييم قوة ارتباط ثلاثة مواد مبطنه طريه بالقاعده الاكريليه لطقم الاسنان == Evaluation of the Bond Strength of Three Soft Lining Materials to Acrylic Resin Denture Base

Author name: اسماء عبد السلام عبد القادر
Supervisor name: منذر نجيب قزانجي
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Al Mosul - Faculty Of Dentistry
Language: English
University location: Mosul
First pages:

تاثير التجوية الاصطناعية على بعض الخواص الميكانيكية لثنائي اكسيد السيليكون النانوي المضاف الى سيليكون الوجه والفكين == Influence of Artificial Weathering on Some Mechanical Properties of SiO2 Nano Silicone Dioxide Reinforced Maxillofacial Silicone

Author name: جهاد عطا الله علي
Supervisor name: محمد مظفرمحمدعلي
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Baghdad
Language: English
University location: Baghdad
First pages:

تاثير اضافة فلوريد الصوديوم كمطهر على بعض خواص مادة طبعة الالجنيت == Effect of Sodium Fluoride Addition As A Disinfectant On Some Properties of Alginate Impression Material

Author name: علاء مهدي حسين
Supervisor name: رغداء كريم جاسم
General topic: Dentistry
Specific topic: Prosthodontics
Degree: Master
University: University of Baghdad
Language: English
University location: Baghdad
First pages:
Abstract: المقدمة : تلوث طبعات الاسنان مع اللعاب والدم من تجويف الفم يحصل مباشرة في عيادات الاسنان ومختبرات صناعة الاسنان يجعل من طبعات الاسنان الملوثة فقرات يصعب التعامل معها من وجهة نظر انتشار الاخماج. اشارت التقارير السابقة الى امكانية الطبعات الملوثة بتلويث ال | Introduction : Contamination of dental impressions with saliva and blood from the oral cavity occurs readily in dental clinics, direct interaction between dental clinics and dental laboratories makes contaminated dental impressions difficult items to deal with it from the cross contamination point of view. Previous reports indicated that contaminated impressions can cross infect gypsum casts that were poured against them, however immersing or spraying commonly used alginate impression material with disinfectant may adversely affect the accuracy of dies or casts obtained. Objective : The objective was to evaluate the effect of (0.25%,0.5%,1%, 2%, 3%, 4% ) of (NaF) addition on the self - disinfection of alginate impression material and its effect on setting time, tear strength, dimensional change and accuracy of alginate impression materials and to compare this with CHX containing alginate material related to the same properties mentioned above.Materials and methods : A total No. of 800 specimens were prepared in this study, they were divided into five main groups according to the type of the tests used (tear strength test, setting time test, dimensional change test, dimensional accuracy test, and bacteriological tests (Streptococcus mutans and Candida albicans).Six concentrations of NaF from (0.25% to 4%) and 0.1% CHX gluconate were mixed with alginate impression material and compare it with control alginate without disinfectant. Results : The self - disinfecting impression material containing NaF showed a total kill of microorganisms immediately after impressions were made.Tear energies for all experimental impression materials were greater than those of the control products. There were no statistically significant differences between the dimensional change tests and also reproduction of detail test, that contained (NaF) and one that did not. With regard to setting time of the impressions, statistically significant reduction were seen between the control and experimental groups of alginate impression materials. The experimental material that did not contain (NaF) had a considerably longer setting time than all of the other materials tested.Conclusion : the use of (NaF) and CHX disinfection when taking alginate dental impression is a good measure in reduction of contamination and cross infection and have a minute effect on dimensional stability and is recommended as step in protecting dentist and dental laboratories teams.
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