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Article
Inhibitory Effects of Aqueous Extract of Garlic on Growth and Keratinase Activity of Trichophyton Mentagrophytes

Author: Israa M. Abd AL-Khaliq
Journal: Al-Kindy College Medical Journal مجلة كلية الطب الكندي ISSN: 18109543 Year: 2011 Volume: 7 Issue: 2 Pages: 33-36
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The effect of garlic extracton fungal growth and keratinolytic activity was studied in Trichophytonmentagrophytes as one of the major etiologic agents of human and animal dermatophytosis in Baghdad and other parts of the World. Objective: To investigated an alternative antidermatophyte with minimum side effects which is plant based and biodegradable natural product Methods: Culture conditions for 30 isolates of T. mentagrophytes isolated from human dermatophytosis from both sexes with ages of 5-63 years in Central Medical city for the period July 2009 to October 2009 were cultured on specific solid medium. Results: The aqueous extract of garlic at various concentrations inhibited the growth of T. mentagrophytes. This inhibition reached to a maximum of 100٪ for extract at 10٪concentration. Keratinase synthesis was also inhibited by the extract about 91 ٪at 8 ٪ concentration. Conclusion: Fungal growth and keratinolytic activity are important factors in pathogenesis of the dermatophytes, their inhibition by garlic indicate that this substance may have potential values for treatment of human and animal dermatophytosis.


Article
Effect of Partial Replacement of Sand with Limestone Filler on Some Properties of Normal Concrete
تأثير مسحوقِ حجر الكلس كبديل جزئي من الرمل على بعض خصائص الخرسانة الاعتيادية

Author: Rana Burhan Abdurrahman Alshahwany رنا برهان عبد الرحمن الشهواني
Journal: AL Rafdain Engineering Journal مجلة هندسة الرافدين ISSN: 18130526 Year: 2011 Volume: 19 Issue: 3 Pages: 37-48
Publisher: Mosul University جامعة الموصل

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Abstract

AbstractIn recent years, there is a growing interest in the use of crushed sand obtained from limestone quarries in some countries where river sand is not widely available. Besides, the demand for aggregates to produce concrete is still high while natural resources decrease. The fines content in limestone is usually high (particles with a size of 0.15-0.7 mm) which can affect concrete properties in an either positive or negative way. Studies on aggregate containing fine materials are vitally important. However, little work has been done so far on the effect of fines in crushed sand on the properties of concrete.This paper examines the influence of limestone filler in sand on concrete properties, which include workability of fresh concrete (slump test method), compressive and tensile strength, unit weight, and ultrasonic pulse velocity. Six concrete mixtures containing different ratios of limestone filler (0, 10, 20, 30, 40, 50) % sand replacement were used while maintaining a constant water/cement ratio. The results proved that limestone filler replacing sand up to 20% without adversely affecting concrete strength.

الخلاصةفي السنوات الأخيرة، أصبح هنالك اهتمام متزايد من قبل بعض البلدان لاستخدام مسحوق الرمل الناتج من سحق حجر الكلس حيث الرمل النهري غير متوفرَ بشكل واسع، إضافةً إلى الطلب المستمر والمتزايد بمستوى عالي على الركام لإنْتاج الخرسانة بينما مصادر الطبيعة في تناقص مستمر. عادة ما تكون نسبة المواد الناعمة في مسحوق حجر الكلس عالية (جزيئات يتراوح مقاسها بين 0.15-0.07 ملم) و يمكن أن تؤثر على خصائص الخرسانة بصورة ايجابية أو سلبية.يمكن القول ان الدراسات حول الركام الحاوي على مواد ناعمة إجمالاً مهمة بشكل حيوي ومع ذلك فالقليل من البحوث تناولت تأثير المواد الناعمة في مسحوق الرمل على خصائص الخرسانة. تضمن البحث تأثير مسحوق حجر الكلس في الرمل على خصائص الخرسانة التي تضمنت فحص قابلية التشغيل للخرسانة الطرية (فحص الهطول) ومقاومتي الانضغاط والشد الانشطاري ووحدة الوزن وسرعة الموجات فوق الصوتية من خلال صب ستة مزجات خرسانية ذات نسب مختلفة لمسحوق حجر الكلس تضمنت (0،10،20،30،40،50)% مستبدلة من الرمل مع الحفاظ على نسبة الماء إلى الإسمنت ثابتة. أثبتت النتائج انه يمكن استبدال الرمل بمسحوق حجر الكلس لغاية نسبة 20% وبدون أي تأثير سلبي على المقاومة.


Article
Zygomatic complex fractures: a 5-year retrospective study

Authors: Dr.Jamal A. Mohammed B.D.S., M.Sc.* د.جمال محمد --- Dr. Thair Abdul Lateef B.D.S., H.D.D., F.I.B.M.S .* د. ثائر عبد الطيف
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2011 Volume: 8 Issue: 3 Pages: 304-309
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The aim of this descriptive analytic retrospective study was to evaluate theetiology, clinical features and treatment data of patients with zygomatic complexfractures at our program during a 5-year period.From March 1998 until February 2003. 69 patients presented with zygomaticcomplex fractures were treated by the department of Oral & Maxillofacial Surgery atBaghdad College of Dentistry and private clinic in Iraq. Patient's information wascollected using a specifically designed form.The patient age ranged from 5-68 years with a mean age of 30.5 years, 51 of themwere males and 18 were females. Road traffic accidents (43.5%) was the major causefor fractures (P<0.05). regarding clinical features subconjunctival ecchymosis (61%)and circumorbital ecchymosis (53.6%) were most common observed. The Gilliesapproach (26%) was the commonest method of reduction.This study has shown that road traffic accidents are responsible for mostzygomatic complex fractures in our environment. It also showed a low utilization of technological advances in the imaging and treatment of these fractures.


Article
Urinary Mercury concentrations associated chewing gum in students of Faculty of Dentistry

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Abstract

The aim of this study was to measure the urinary mercury concentration instudents after chewing gum for certain period of time. Sixteen students from facultyof dentistry had used chewing gum for five hours a day for seven days. Urine samplecollected 24 h before and after the experimental time. Total mercury in urine (U-Hg)was determined by means of inductively coupled plasma mass spectrometry (ICPMS).t-test was used for the comparison of mercury before and after chewing gum. Anon significant difference was found after chewing than before chewing gum.


Article
Influence of Closed Sandwich Technique on Marginal Seal of Class II Restorations with Different Substrates using LED Curing

Author: Dr. Shatha Abdullah Salih B. D. S., M. Sc., Lecturer. د.شذى عبد الله
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2011 Volume: 8 Issue: 3 Pages: 248-255
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

This study was done to evaluate the microleakage at the tooth restoration interfacein different substrates when glass ionomer was used as a base which covered by aveneer of resin composite, as closed sandwich technique, with light -emitting diode(LED) curing.Eighty Class II cavities were prepared in mesial and distal of extracted molars,mesial cavities with gingival margins in enamel (E) and distal cavities with gingivalmargins in dentin(D), were divided into four main groups (G)s, each group wassubdivided into GE and GD of ten cavities for each and filled as follows:GI each cavity of GIE & GID was filled with composite and cured with halogenlight curing unit (H), GII each cavity of GIIE & GIID was filled with glass ionomerlining and composite and cured as GI, Group III each cavity of GIIIE & GIIID wasfilled as GI but cured with LED while Group IV, each cavity of GIVE and GIVDfilled as GII and cured as GIII. After restorations, the teeth were thermocycled 300times, soaked in 0.1% methylene blue for 24 hours, sectioned and microleakage fromthe gingival margin scored. Statistical analysis was performed using t-test.There was no significant difference when use sandwich technique in enamel butThere was significant difference in dentin (p≤0.05), while no significant differencewhen the comparison between enamel and dentin, whether LED or H curing was used.With sandwich technique, the marginal adaptation of enamel margins was notdependent on the restorative technique while marginal adaptation in dentin wassignificantly better. The use of LED had no adverse effect on microleakage.


Article
Evaluation of enamel surface damage after debonding using three different pliers "An in vitro study"

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Abstract

AbstractThis study aims to compare the effectiveness of three different pliers in debondingstainless steel and ceramic brackets, also to evaluate enamel surface damage and thesite of bond failure after debonding.Sixty premolars, extracted for orthodontic purposes, were divided into 3 groups of20. The enamel surfaces were examined with 10X magnifying lens. Two types ofbracket (stainless steel and ceramic) was bonded and debonded in each group using:conventional debonding pliers, bracket removal pliers, and ligature wire cutter. Afterdebonding, the enamel surfaces were inspected under a stereomicroscope to determinethe predominant site of bond failure. Then stereomicroscope was used to evaluateenamel surface damage after the removal of residual adhesive.The enamel surface damage showed a statistically significant difference in ceramicbracket groups, whereas, it was statistically insignificant in stainless steel bracketgroups. The amount of the adhesive remained on the tooth surface was statisticallyinsignificant in both stainless steel and ceramic bracket groups. The predominantfailure site was within the adhesive itself for both types of brackets.The enamel surface damage that results from debonding of ceramic brackets washigher than that found with the stainless steel brackets especially with the use ofbracket removal pliers "used in this study"


Article
Efficacy of tramadol as analgesic and mixed with ketamine, xylazine as anesthetic in rabbits
كفاءة الترامادول كمسكن للألم وبعد خلطة مع الكيتاين والزايلازين كمخدر في الأرانب

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Abstract

Abstract: This study were performed to evaluate the efficacy of Tramadol as analgesic and efficacy of using Tramadol in combination with other drugs like Ketamine and Xylazine in anesthetic protocols in rabbits. 15 adult New Zealand white rabbits divided to 3 equal groups were anesthetized intramuscularly in one syringe, group 1 with Tramadol 15 mg/kg B.W, group 2 with Tramadol 15mg/Kg B.W and Ketamine 30mg/Kg B.W, group 3 with Tramadol 15mg/Kg B.W and Ketamine 30mg/Kg B.W and Xylazine 5mg/Kg B.W, physiologic parameters were evaluated including : body temperature, heart rate, respiratory rate, muscle relaxation, analgesia and stages of anesthesia ( Induction of anesthesia, surgical anesthesia and recovery time).The most significant changes were reported in G3 (T15K30X5) and this combination is useful regimen clinically for anesthetize rabbits due to the fast of induction anesthesia and the long surgical duration of anesthesia.

الخلاصة: تمت هذه الدراسة لغرض تقييم كفاءة الترامدول كمسكن وكفاءة استخدام الترامدول مع ادوية اخرى مثل الكيتامين والزايلازين كبرامج تخدير في الأرانب. 15 ارنب ناضج سلالة محلية قسمت الى 3 مجاميع متساوية تم تخديرها بالحقن في العضلة في محقنة واحدة, المجموعة الأولى ترامدول 15ملغم/كغم من وزن الجسم, المجموعة الثانية ترامدول 15ملغم/كغم , كيتامين 30ملغم/كغم من وزن الجسم ,المجموعة الثالثة ترامدول 15ملغم/كغم, كيتامين 30ملغم/كغم و زايلازين 5ملغم/كغم من وزن الجسم. تم تقييم المعايير الفسلجية المتضمنة : درجة حرارة الجسم, معدل ضربات القلب, معدل التنفس, درجة الأرتخاء العضلي, درجة التسكين وايظاً تم تسجيل ( وقت احداث التخدير, طول فترة التخدير الجراحي, وقت الأفاقة). معظم التغيرات المعنوية سجلت في المجموعة الثالثة (ترامدول15كيتامين30زايلازين5) ملغم/كغم وهذا المزيج يعتبر نظام مفيد سريرياً لتخدير الأرانب وذلك لسرعة احداث التخدير وطول فترة التخدير الجراحي.


Article
A prospective study to examine the bleeding tendency of patients receiving regular low-dose aspirin therapy

Author: Dr. Taha Yaseen Hamad . B.D.S. H.D.D M.Sc د.طه ياسين
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2011 Volume: 8 Issue: 1 Pages: 50-54
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The fear of uncontrolled bleeding often prompts medical practitioners to stopaspirin intake for seven to 10 days before any surgical procedure. This study wasinitiated to evaluate the effect of aspirin on bleeding in patients undergoing oralsurgery.The study group consisted of 39 patients who were subjected to undergo dentalextraction. All patients were receiving 100 milligrams of aspirin daily on a regularbasis. Patients were randomly divided into two groups: those who stopped the aspirintherapy before the procedure and those who continued the aspirin therapy. One hourbefore the procedures, all patients underwent a bleeding time test. In addition, theamount of bleeding during the procedure was measured.The mean (± standard deviation) bleeding time was 1.8 ± 0.47 minutes for patientswho stopped aspirin therapy one week before the procedure. For patients whocontinued aspirin therapy, the bleeding time was 3.1 ± 0.65 minutes. The differencewas statistically significant (P = .004). However, both groups were within the normalbleeding time range, and in both groups, a local hemostatic method was sufficient tocontrol bleeding. No episodes of uncontrolled intraoperative or postoperative bleedingwere noted.Stopping of low-dose aspirin therapy is not a must before oral surgery. Localhemostasis is sufficient to control bleeding.


Article
Nickel & Chromium Ions Release from Fixed Orthodontic Appliances in Iraqi patients

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Abstract

Nickel and chromium can cause hypersensitivity in some people , this study wasconducted to investigate the alteration in the nickel and chromium concentrations insaliva of patients with fixed orthodontic appliance.The investigation is comprised of 45 orthodontic patients .The selected sampledivided into 3 groups. The first group consisted of 15 patients with fixed appliancesin their upper & lower arches. The second group consisted of 15 patients with a fixedappliance placed only in the upper arch. The control group consisted of 15 patientswho were not undergoing orthodontic treatment.Nickel and chromium release was quantified with the use of an atomic absorptionspectrophotometr. The analysis of variance was used to determine if differencesexisted between the nickel and chromium release according to time interval. Foursamples of stimulated saliva were collected from each patient before insertion of fixedappliance, 1 week , 1month , and 2month after insertion of the appliance.A considerable variation in the concentrations of both nickel and chromium wasobserved. Significant differences were found between the no-appliance samples andthe samples obtained after insertion of the appliance.Nickel and chromium concentrations of saliva are significantly affected by fixedorthodontic appliances during the first 2 month of treatment.


Article
Assessment of facial proportions in a sample of Iraqi adults with normal occlusion

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Abstract

This study aimed to evaluate the facial proportion in a sample of Iraqi adults usingPeck and Peck analysis and to verify the presence of genders differences.60 Arab adult subjects (30 males and 30 females) having normal skeletal anddental relation and acceptable facial profile were chosen for this study. Eachindividual was subjected to clinical examination and digital true lateral cephalometricradiograph in the natural head position. The radiographs were analyzed usingAutoCAD 2007. Descriptive statistics was obtained for the variables for both genders;independent samples t-test was performed to evaluate the genders difference.The mean values of the facial, maxillo-facial, naso-maxillary, maxillary and totalvertical angles are nearly similar in both genders with a non-significant difference.There is slight increase in the nasal angle in females and mandibular angle in maleswith a significant and highly significant genders difference respectively.Both genders showed proportional faces, although there is slight increase in thenasal angle in females and mandibular angle in males.

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