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قياس قوة الدفع للخارج لحشوات الجذور GuttaFlow 2 , Thermafil وGuttaCore : دراسة مختبرية == Push Out Bond Strength of Guttaflow 2, Thermafil, And Guttacore Obturation Materials (An In Vitro Study)

Author name: حيدر طالب فاضل
Supervisor name: جمال عزيز مهدي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:
Abstract: اجريت هذه الدراسه المختبرية لقياس قوة ارتباط لثلاثه مواد مختلفة لحشوات قنوات الجذور باستخدام قوة الدفع للخارج.ثلاثون جذر حلقي مستقيم من الاسنان العلوية الخلفية استخدمت في هذه الدراسه وهذه الاسنان تم تحضيرها بتقنيه التاج السفلي باستخدام نظام المبارد الد | This in vitro study was carried out to investigate the push out bond strength of three different obturation materials GuttaFlow 2, Thermafil and GuttaCore at different levels.Thirty extracted upper molars were collected and the platal roots were sectioned at the CEJ of the tooth. The platal roots were instrumented with Hyflex CM rotary files to the size of 40/0.06.The instrumented samples were divided into three groups of ten samples each, the first group were obturated with GuttaFlow 2, the second group were obturated with Thermafil and the third group were obturated with GuttaCore obturating materials.After an incubation period of 7 days, each sample were sectioned into three sections of 2 mm thickness (apical, middle, coronal), each slice then introduced to the push out testing using a universal testing machine at a cross head speed of 0.5 mm/min. The result of this study showed Push - out bond strengths were significantly higher when canals were filled with GuttaCore than those filled with Thermafil and GuttaFlow 2. And Thermafil showed a higher significant difference than the GuttaFlow 2. It also showed that the bond strength values decreased from the coronal to the apical direction.In conclusion, the thermoplasticized gutta - percha appears to achieve higher push out bond strength values than the cold flowable gutta - percha. With GuttaCore showed higher push out bond values than Thermafil.

حدوث وشدة الالم بعد استخدام ثلاثة انظمة مختلفة لتحضير قنوات الجذور == Incidence And Severity of Pain Following The Usage of Three Different Root Canal Instrumentation Systems

Author name: احمد حمد عبيد
Supervisor name: جمال عزيز مهدي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:
Abstract: Postoperative pain after endodontic procedures is an undesirable occurrence for both patients and clinicians. Certain factors may predispose to the development of postoperative pain. Knowledge of the causes and mechanisms behind interappointment pain in endodontics is of utmost importance for the clinician to properly prevent or manage this undesirable condition. The causative factors of interappointment pain encompass mechanical, chemical, and microbial injuries to the pulp or periradicular tissues, which are induced or exacerbated during root canal treatment. Ninety patients were recruited and included in this study out of one hundred and twenty patients, those patients requiring endodontic treatment on their permanent upper or lower molar teeth with asymptomatic irreversible pulpitis preoperatively, access opening and instrumentation was performed at the same visit.Patients ranged in age from 19 to 50 years old, and all were in good health, as determined from a written health history and oral interview.The patients were assigned randomly into three groups of 30 patients each : ? First group (n=30) : Teeth were instrumented using Universal ProTaper System (Full Rotary technique).? Second group (n=30) : Teeth were instrumented using ProTaper Next System (Full Rotary technique).? Third group (n=30) : Teeth were instrumented using WaveOne System (Reciprocating technique).Pain assessment carried out at day 1, 2, 3 & 7 using Verbal Rating Scale (4 - Point Scale). Patients recorded the incidence and severity of pain experienced.Patients were called at 24, 48 and 72 hours to obtain their reports for the first three days. Seven days after treatment their records were reviewed and percussion test was performed. Result showed that all groups induced Post - operative Pain, the difference is some systems cause more Post - Operative pain than other do : group 3 (WaveOne group) showed higher incidence and severity of PostoperativePain, followed by group 1 (Universal ProTaper group) that has shown less incidence and severity of Post - operative Pain than group 3 (WaveOne group), last group which it was group 2 (ProTaper Next group) has shown the lowest incidence and severity of Post - operative Pain. The data obtained were analyzed statistically using Chi Square test, total score for Verbal Rating Scale at day 1, 2, 3, and 7 showed that there was a highly significant differences between ProTaper Next group and other twogroups (P ? 0.001), and non - significant differences between ProTaper group and WaveOne group (P ? 0.05).

تقييم قابلية التنظيف للانظمة OneShape, ProTaper, Reciproc, WaveOne باستخدام التحليل المظهري للصورة الرقمية == Evaluation Of The Cleaning Efficiency Of Oneshape, Waveone, Reciproc And Protaper Systems Using Digital Image Morphometric Analysis

Author name: لمى عباس جسام
Supervisor name: حكمت عبد الرحيم الغراوي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

تقييم كمية الحطام المقذوف قميا خارج الجذر باستخدام انظمة مختلفة لتحضير قناة الجذر == Evaluation Of The Amount Of Apically Extruded Debris Using Different Root Canal Instrumentation Systems

Author name: هاشم معين حسين
Supervisor name: ايمان محمد الزقة
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

اختلال حافات الاغلفه المعدنية المصنعه من معدن الكروم كوبلت باستخدام ثلاث طرق مختلفة == Marginal Discrepancy Of Cobalt Chromium Metal Copings Fabricated With Three Different Techniques

Author name: ايناس اتحاد جليل
Supervisor name: عمار عطا الله علي السعدي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

دراسة مخبرية لمقارنة الختم الذروي لثلاث تقنيات مختلفة من حشوات الاقنية == Comparison Of Apical Sealability Of Three Obturation Techniques : An In Vitro Study

Author name: منتظر سعودي كبة
Supervisor name: جمال عزيز مهدي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

مقارنة التلائم الهامشي التطابق الداخلي والتسرب المايكروي للزولد الزركون الامبريس2 للتيجان الخزفية الكاملة : دراسة مخبرية == Comparison Of Marginal Adaptation, Internal Fitness And Microleakage Of Zolid, Zircon And Empress 2 All - Ceramic Crown Materials : An In Vitro Study

Author name: نصر رفعت سبع
Supervisor name: عمار عطا الله علي السعدي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

دفع الى الخارج القوة الرابطة لمواد مختلفة لحشوات جذور الاسنان == Push - Out Bond Strength Of Different Root Canal Obturation Materials

Author name: سندس حسين ناصر
Supervisor name: ايمان محمد الزقة
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

تقييم انتقال قناة الجذر وقابلية الحفاظ على تمركزها بمستويات مختلفة لقنوات جذور حضرت بواسطة المبرد ذو الضبط الذاتي باستخدام التصوير المقطعي : دراسة مقارنة == An Evaluation Of Canal Transportation And Centering Ability At Different Levels Of Root Canals Prepared By Self Adjusting File Using Computed Tomography : A Comparative Study

Author name: فرح صلاح الدين عباس
Supervisor name: حكمت عبد الرحيم الغراوي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

قدرة البقاء في مركز القناة وانتقال جدران القناة لادوات ProTaper, Mtwo, WaveOne, Reciproc في القنوات المقوسة المقلدة : دراسة مقارنة == Centering Ability And Canal Transportation Of ProTaper, Mtwo, WaveOne & Reciproc Files In Simulated Curved Canals : A Comparative Study

Author name: رفل محمد مريوش
Supervisor name: جمال عزيز مهدي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:
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