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Article
Histopathological Effect of Lactobacilli on Murine Spleen

Author: Abed Hassan Baraaj
Journal: Iraqi Academic Scientific Journal المجلة العراقية للاختصاصات الطبية ISSN: 16088360 Year: 2012 Volume: 11 Issue: 2 Pages: 284-288
Publisher: The Iraqi Borad for Medical Specialization المجلس العراقي للاختصاصات الطبية

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Abstract

ABSTRACT:BACKGROUND:Lactobacilli are ubiquitous in the environment and in human body. They widely used as probiotic therapeutic agents. However, several authors reported that this bacteria may cause several serious infections in various parts of human body.OBJECTIVE:This work is aimed to illustrate the histopathological effect of lactobacilli in murine spleen which play a major role in the immune system.MATERIALS AND METHODS:Three Lactobacillus isolates (namely, L. bulgaricus, L. plantarum and L. acidophilus) were isolated form yogurt, vinegar and vagina, respectively. These isolates were injected intraperitoneally in mice in a dose 1.5 X 108 CFU/ml.RESULTS:Several histopathological changes were caused by lactobacilli represented by degeneration, necrosis, presence of haemosidrin and macrophages and lymphoblasts.CONCLUSION:This non-pathogenic bacteria was able to cause severe damage to the spleen of mice.

Keywords

lactobacilli --- spleen --- red pulp --- white pulp


Article
Evaluation of the complications due to delayed management of trauma to anterior teeth

Author: Lubab J. Mohammed لباب محمد
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2005 Volume: 17 Issue: 2 Pages: 93-96
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Trauma to anterior teeth is a serious problem in young aged patients. This study was done to evaluate the complications that occur if treatment to the traumatized anterior teeth (primary or permanent) was delayed.Materials and Methods: Patients who came to the Department of Pedodontics and Preventive Dentistry at the college of dentistry / Baghdad seeking treatment of traumatized anterior teeth for esthetic or symptomatic reason were studied. Dental and medical history was taken, and the injured teeth were examined clinically and radiographically.Results: Most of the patients were late in seeking treatment month or more. Trauma which involves enamel and dentin was seen in (51) cases and pulp necrosis was seen in (43.1%) of these cases. Enamel and dentine fracture with pulp exposure (36 cases) showed a very high frequency of pulp necrosis (72.2%). External and internal root resorption were seen in only (13) cases of the (153) teeth examined.Conclusion: There is a need to educate the parents and the public about the seriousness of dental trauma and urge them to seek dental treatment as soon as possible. In addition a thorough clinical and radiographic examination is essential to identify the complications of dental trauma and treat them


Article
Evaluation of mineral trioxide aggregate MTA as traumatic pulp capping material (An In vitro study)

Author: Neam N. AlYousifany
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2011 Volume: 11 Issue: 3 Pages: 323-329
Publisher: Mosul University جامعة الموصل

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Abstract

Aims of the Study: The purpose of this clinical study was to evaluate the effectiveness of mineral trioxide aggregate MTA as direct pulp capping material in permanent teeth with traumatic exposure. Materials And Methods: twenty four permanent teeth for healthy patients ages between 15-40 accepted direct pulp capping treatment after accidental traumatic exposure during cavity preparation done by graduate students, in Conservative Department , College of Dentistry, University of Mosul. The teeth were treated directly with MTA material over the exposure site then based with Glass Ionomer cement and restored with permanent restoration . clinical , and radiographic examinations were carried out after 1 week then follow up after 6,10,12,24 weeks. Results: six month clinical &radiographic follow up were carried out for all patients . At recall appointments, patients were evaluated for reparative dentin formation, pulpal calcification, continued normal root development and evidence of pathosis. One patient did not return for recall appointments and evaluations after one week , another one failed to return after six weeks interval . The remaining had favorable outcomes on the basis of clinical finding , electrical pulp tester & radiographic appearance . Conclusion : within the limitation period of the present study , MTA can be considered as a reliable pulp capping material for manangment direct pulp exposure in permanent teeth


Article
Hyalinization of dental pulp tissue due to occlusal trauma (Experimental study)

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Abstract

AbstractDental pulp tissue is a highly specialized conneclive tissue contains a formativeand protective cells that can be affected easily by stimuli such as occlusal traumasubjected by occlusal overhang filling.Sixteen albino rats aged range (6-8 months) weight range (0.5-0.75 kg) weresubjected the occlusal overhang filling made for upper first molar for 2 periods, andaccording the periods, rats divided in the 2 groups. Groups I (8rats) subjected forocclusal trauma for 2 weeks duration group II (8rats) subjected for occlusal trauma for8 weeks duration. Histological evaluation have been done for 2.8 weeks usinghematoxyline and eosin stain.Occlusal trauma for 2 weeks in group I showed wide irregular predentin formationwill displacement in odontoblast cell.While in group II for 8 weeks duration, histological feature for pulp tissue showedhyalinization (50-95 μm) in length.Occlusal trauma for long period cause hyalinization of pulp tissue that negativelyinfluence on endodontic treatment in future.


Article
Temperature rise beneath a light–cured materials using two types of curing machines

Authors: Abdul–Haq A Suliman --- Sabah A Ismail
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2006 Volume: 6 Issue: 1 Pages: 20-25
Publisher: Mosul University جامعة الموصل

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Abstract

Aim: To measure the temperature rise induced by a light emitting diode (LED) curing unit and byquartz tungsten halogen (QTH) curing unit using two types of composite resin XRV Herculite andVenus. Materials and Methods: Forty extracted non–carious single canal premolars were cleaned andbisected longitudinally. Class V preparations were cut on the buccal surfaces. The teeth were dividedinto four groups; each of ten. The teeth in the first and second groups were restored with XR–Herculitecomposite resin. The teeth in the third and fourth groups were restored with Venus composite resin.The composite resin in the first and third groups were polymerized using QTH curing unit “Astralis”for 40 seconds; the light intensity was 502 mW/cm2. The distance between the tip of the light and thecomposite was 3 + 1 mm. The composite resin in the second and fourth groups was polymerized usingLEDs “Ultra–Lite 200 E plus” curing unit for 20 seconds; the light intensity was 536 mW/cm2 usingthe same distance as the first and third groups. The temperature rise at the pulpal wall was recorded byplacing a thermocouple on the pulpal wall directly under the restoration. Results: The lowesttemperature rise during LED irradiation with Venus composite resin followed by LED irradiation withXRV Herculite composite resin. Whereas QTH curing units with XRV Herculite composite resinproduced higher values, QTH curing units with Venus composite resin produced the highesttemperature rise. Conclusion: The temperature rise of LED curing units and QTH curing units used inthis study was under the limits that affect the integrity of the dental pulp.


Article
The effects of type of tooth and the placement site of electrode on the electrical pulp testing of the anterior teeth

Author: Talal H Al–Salman
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2005 Volume: 5 Issue: 2 Pages: 97-102
Publisher: Mosul University جامعة الموصل

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Abstract

The aim of this study is to evaluate the effect of type ofthe tooth and the placement site of electrode on electrical pulptesting of the anterior teeth. Twenty persons were participatedin this study. The six maxillary and mandibular anteriorteeth were checked to evaluate the response threshold to electricalpulp testing; each tooth was examined at four placementsites on its labial surface, which are the incisal edge, incisalthird, middle third and the cervical third.The results showed that the response threshold of themandibular anterior teeth was lower than that of the maxillaryanteriors. The canines may respond to the electrical stimulusin a highest threshold than the lateral incisors and the centralincisors which had the lowest response threshold. Also, thisstudy showed that the best placement site of electrode was inthe incisal edge of the tooth and the pulp tester reading wasincreased as the electrode moved toward the cervical regionof the tooth.


Article
Prevalence of pulp stone (Orthopantomographic-based)

Authors: Zainab H. Al-Ghurabi زينب الغرابي --- Areej A. Najm اريج نجم
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 2 Pages: 80-84
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Pulp stones (denticles) are discrete calcified aggregates that occur most frequently in the dental pulp.It was found in healthy, diseased and sometimes in erupted teeth. Its number appears to increase with increasingage. It is usually detected during radiographic examination as radiopaque masses of variable size and shape. Theaims of this study were to calculate the prevalence of pulp stones in young Iraqi adults by using digitalorthopantomgraph, and to report any associations between occurrence of pulp stones with, gender, tooth type,and dental arch.Subject, Material and Method: A total of 390 digital panoramic radiographs were collected from oral diagnosisdepartment /College of Dentistry for Iraqi sample, University of Baghdad and Al-Karkh General Hospital. The samplecomposed of 169 male and 221 female with mean age (26.9 years). About 10510 teeth were evaluated; pulp stonesscored as present or absent, number of stone and associations with, gender, tooth type and dental arch wererecordedResult: From 390 (OPG) total of 3758 teeth were examined, 136 patients have pulp stone present in (276) teeth.According to gender, 75 female with 143 teeth (51.8%) and 61 male with 133 teeth (48.1), that is mean there was nosignificant difference of ( pulp stone occurrence) found between female and male. Their presence were seldomfound in the premolars 18 teeth (7%) but was much higher in the molars 258 teeth (93%) and the difference isstatistically significant. Pulp stone occurrence was significantly more common in the first molars than in the secondmolars and in the first premolars than in the second premolars in each dental arch. No difference between the twoarches could be identified.Conclusion: Pulp stones are not only incidental radiographic findings of the pulp tissue but may also be an indicatorof some serious underlying disease. On the other hand, they may provide useful information to predict about thesusceptibility of patients for other dystrophic soft tissue calcifications such as urinary calculi and calcified atheromas


Article
Biogas Production by Anaerobic Digestion of Date PalmPulp Waste
انتاج الغاز الحيوي من الهضم اللاهوائي لمخلفات لب التمر

Author: Khalidah A. Jaafar خالدة عبد الخالق جعفر
Journal: Al-Khwarizmi Engineering Journal مجلة الخوارزمي الهندسية ISSN: 18181171 23120789 Year: 2010 Volume: 6 Issue: 3 Pages: 14-20
Publisher: Baghdad University جامعة بغداد

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Abstract

The purpose of this preliminary study is to verify the possibility of using Iraqi Zahdi date palm biomass as a resource for biogas production, methane in particular using thermophilic anaerobic digestion with waste water treatment activated sludge. Moreover, is to investigate the influence of extra nutrients addition to the digestion mixture. Biogas was captured in sealed jars with remote sensing modules connected to computer with integrated program to record the gas pressure continuously. A total gas pressure with 67% Methane was produced from date pulp waste fermentation with a yield of 0.57 Lit for each gram volatile solid of substrate. Addition of 1% yeast extract solution as nutrient increased Methane yield in liters by 5.9%. This is the first time in literature to record biogas production data from Iraqi date palm biomass.

الهدف من هذه الدراسة الاولية هو تبيان احتمالية استخدام مخلفات لب تمر الزهدي العراقي كمصدر لانتاج الغاز الحيوي، الميثان خصوصا باستخدام الهضم اللاهوائي الحراري مع الفضلات المحفزة لوحدة معالجة مياه المجاري. بالاضافة الى ذلك دراسة تأثير اضافة مغذيات خارجية الى مزيج الهضم. تم جمع الغاز الحيوي بواسطة علب زجاجية محكمة الغلق بواسطة متحسسات الكترونية يتم التحكم بها عن بعد من خلال برنامج الحاسوب لتسجيل ضغط الغاز الناتج باستمرار. الغاز الحيوي الناتج احتوى على نسبة 67% غاز الميثان بناتج مقداره 0.57 لتر غاز لكل غم مواد صلبة طيارة من المادة الاولية. ان اضافة محلول خلاصة الخميرة بنسبة 1% قد حسن من ناتج الميثان بنسبة 5%. وهي المرة الاولى في الابحاث العلمية حيث تنشر نتائج انتاج الغاز الحيوي من فضلات لب التمر العراقي.


Article
Coagulation-Flocculation process to treat Pulp and Paper Mill Wastewater by Fenugreek Mucilage Coupled with Alum and Polyaluminum Chloride
دراسة أداء كل من الشب والبولي ألمنيوم كلورايد مع دبق الحلبة في معالجةمخلفات المياه الناجمة عن معامل الورق

Authors: Mervit M. Janbi ميرفت مهدي حنوص --- Suhama E. Salah سهامة عيسى صالح --- Kadhum M. Shabe كاظم مطر شبيب
Journal: Al-Khwarizmi Engineering Journal مجلة الخوارزمي الهندسية ISSN: 18181171 23120789 Year: 2011 Volume: 7 Issue: 3 Pages: 39-47
Publisher: Baghdad University جامعة بغداد

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Abstract

The wastewater arising from pulp and paper mills is highly polluted and has to be treated before discharged into rivers. Coagulation-flocculation process using natural polymers has grown rapidly in wastewater treatment. In this work, the performance of alum and Polyaluminum Chloride (PACl) when used alone and when coupled with Fenugreek mucilage on the treatment of pulp and paper mill wastewater were studied. The experiments were carried out in jar tests with alum, PACl and Fenugreek mucilage dosages range of 50-2000 mg/L, rapid mixing at 200 rpm for 2 min, followed by slow mixing at 40 rpm for 15 min and settling time of 30 min. The effectiveness of Fenugreek mucilage was measured by the reduction of turbidity and Chemical Oxygen Demand (COD). The results show that the combination of PACl and Fenugreek mucilage is more effective than alum, PACl and alum + Fenugreek mucilage. It can achieve greater than 97% of turbidity reduction and greater than 98% of COD reduction at low dosage of PACl (50 mg/L) and Fenugreek mucilage (100 mg/L). The results indicate that lower quantities of PACl are needed to obtain an acceptable reduction in turbidity and COD in the treatment of pulp and paper mill wastewater.

تعتبر مخلفات المياه الناجمة عن معامل الورق من المياه الملوثة بدرجه كبيره مما يتطلب معالجتها قبل تصريفها إلى الأنهار. وتعتبر عملية التخثير والتلبيد باستخدام البوليمرات الطبيعية من الطرق التي تزايد استخدامها في معالجة مخلفات المياه. في هذا البحث تم دراسة أداء كل من الشب والبولي المنيوم كلورايد كل على حده و الشب والبولي المنيوم كلورايد مع دبق الحلبه في معالجة مخلفات المياه الناجمة عن معامل الورق. وقد أجريت التجارب باستخدام اختبار الجره وبجرع مختلفة للشب والبولي المنيوم كلورايد ودبق الحلبة تتراوح بين 50-2000 ملغم/لتر ومزج سريع مقداره 200 دوره في الدقيقه لمدة دقيقتين متبوع بمزج بطئ مقداره 40 دوره في الدقيقة لمدة 15 دقيقه وزمن تركيد مقداره 30 دقيقه. وقد قيست فعالية دبق الحلبة اعتمادا على الانخفاض في العكوره ومتطلب الأوكسجين الكيمياوي. وقد أظهرت النتائج ان استخدام دبق الحلبه مع البولي المنيوم كلورايد يكون أكثر فعالية من استخدام الشب والبولي المنيوم كلورايد من دون إضافة دبق الحلبة والشب مع دبق الحلبه. حيث بلغت نسبة الانخفاض في العكوره اكثر من 97% ونسبة الانخفاض في متطلب الأوكسجين الكيمياوي أكثر من 98% وبجرعه واطئه للبولي المنيوم كلورايد (50 ملغم/لتر) ودبق الحلبه (100 ملغم/لتر). ان النتائج المستحصله تدل على امكانية استخدام كميات قليله من البولي المنيوم كلورايد للحصول على انخفاض مقبول في العكوره ومتطلب الاوكسجين الكيمياوي لمخلفات المياه الناجمة عن معامل الورق.


Article
Evaluation the effect of pulp polyp on periapical area of primary and permanent dentition: Periapical radiographic Iraqi study

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Abstract

Introduction:The pulp polyp (PP), also known as chronic hyperplastic pulpitis orproliferative pulpitis, is a type of inflammatory hyperplasia. It occurs in a vitaltooth with a good blood supply when the pulp has been exposed to caries ortrauma.Objective: The aim of this study to evaluate different radiographic periapical changesof primary and permanent dentition in clinically detected pulp polyp patients.Materials and Methods: Patients who were clinically diagnosed with pulp polypwere subjected to radiographic examination. Digital intraoral periapicalradiographs of 70 patients with pulp polyp were taken. Various periapical changesof primary and permanent dentition in the digital radiographs were recorded . Thedata obtained was subjected to statistical analysis using SPSS version 16.0.Result: All 70 patients showed definite periapical changes. Out of which periodontalligament (PDL) space widening was seen in all 70 cases (100%), lamina duradiscontinuity was observed in 50 cases (71.43%), periapical rarefying osteitis wasnoted in 20 cases (28.57%), condensing osteitis was accounted in ten cases(14.29%), periapical granuloma was observed in six cases (8.57%),hypercementosis was accounted in nine cases (12.86%) , root resorption andperiapical cyst was observed in eight cases each (11.43%).Conclusions: The results of the present study showed that majority of the pulp polyppatients observed at young age group in both gender and the majority of the pulppolyp patients were associated with definite periapical changes that suggestedbeing a periapical lesion.

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