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Article
Assessment of Bacterial Contamination of Orthodontic Arch wire

Authors: Suha Saad Hassan --- Nidhal H. Ghaib --- Batool Hassan Al-Ghurabi
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2019 Volume: 31 Issue: 1 Pages: 48-51
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The microorganisms can impend the life of health care professional and particularly the dental practitioners. They can be transmitted by different ways like airborne and droplet transmission. The current study was carried out to identify whether the arch wires that received from the manufactures are free from microbial contamination and to determine the bacterial species attached to the arch wires.Materials and Methods: This study involved eighty samples, consisted of two types of arch wires (nitinol and stainless-steel) from four companies (3M, G&H, Jiscop, OrthoTechnology). These wires inserted in a plane tube that contains 10 -ml of (Tris [tris(hydroxymethyl)aminomethane] and EDTA (ethylenediaminetetraacetic acid) tris-EDTA and brain heart infusion (BHI) broth. A 0.1 ml was withdrawn from the tube and spread on agar plates. The control groups consist of 16 plane tube (8 tubes with tris-EDTA and other 8 tubes with (BHI).Results: Microbial sampling yielded growth from 5 of the 80 arch wires. The predominant bacteria that isolated were Bacillus spp. No growth was recovered from 75 of the samples and from controls. The bacteria were isolated by BHI reagent and no growth was observed by tris-EDTA reagent with statistically significant difference (P<0.05). The Bacillus spp. found only in the G&H and Jiscop companies, however, no statistically significant difference was found among them (P>0.05). With regard to the presence and distribution of bacteria according to the types of wires, the present results clarified that cases of contamination with Bacillus spp. were found in the nitinol arch wires with statistically significant difference (P<0.05).Conclusions: The results of the current study revealed low count of bacterial contamination in the two types of companies (G&H and Jiscop). Not all materials that received from the manufactures are free from contamination and an effective sterilization regimen is needed to avoid cross-contamination.

Keywords

Arch wires --- contamination --- Bacilli


Article
Salivary level of RANKL and OPG in chronic periodontitis

Authors: Batool Hassan Al-Ghurabi بتول حسن الغرابي --- Sara Mohammed Mohssen سارة محمد محسن
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2015 Volume: 27 Issue: 1 Pages: 189-194
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Periodontal diseases are initiated by microbial plaque, which accumulates in the sulcular region andinduces an inflammatory response. The Receptor activator of nuclear factor-kappa B ligand / osteoprotegerin(RANKL/OPG) axis is involved in the regulation of bone metabolism in periodontitis, in which an increase in receptoractivator of nuclear factor-kappa B ligand or a decrease in osteoprotegerin can tip the balance in favor ofosteoclastogenesis and the resorption of alveolar bone that is the hallmark of periodontitis. This study was performedto investigate the role of salivary levels of RANKL and OPG in pathogenesis of chronic periodontitis.Subjects and Methods: Fifty five subjects with chronic periodontitis with ages range from 24-64 years and 25apparently healthy volunteers their ages and sexes were matched with the patients were participated in this study.Periodontal parameters used in this study were plaque index, gingival index, probing pocket depth, clinicalattachment level and bleeding on probing. Saliva samples were collected from all patients and controls. Enzymelinkedimmunosorbent assay was carried out for estimation the salivary level of RANKL and OPG in studied groups.Results: The present data revealed that the median salivary levels of RANKL was elevated in patient as comparedwith control group (P<0.001), whereas the salivary levels of OPG doesn’t show any significant differences betweenthe study groups (p>0.05). In contrast the ratio of RANKL/OPG ratio was significantly higher in patients whencompared with the ratio in control group. Furthermore, negative significant correlation was noticed between RANKLand OPG. Regarding correlation between salivary (RANKL and OPG) and clinical periodontal parameters, RANKLlevels was showed significant positive correlation with each of probing pocket depth and clinical attachment level.Otherwise no association between OPG levels and clinical parameters of periodontitis was found. Moreover; theratio RANKL/OPG was showed significant positive correlation with each of gingival index, probing pocket depth andclinical attachment level.Conclusion: This study demonstrates that salivary levels of RANKL and OPG play a crucial role in pathogenesis ofperiodontitis, and the relative RANKL/ OPG ratio appears to be indicative of disease occurrence

Keywords

chronic periodontitis --- RANKL --- OPG


Article
The Association of HLA-A Gene Polymorphisms with Chronic Periodontitis in Iraqi patients
الارتباط بين تعدد الأشكال الجينيHLA-A مع مرض النساغ المزمن في المرضى العراقيين

Authors: Enas Razzoqi Naaom م.د.ايناس رزوقي نعوم --- Seta A. Sarkis د.سيتا سركيس --- Batool Hassan Al-Ghurabi د.بتول حسن الغرابي
Journal: Diyala Journal of Medicine مجلة ديالى الطبية ISSN: 97642219 Year: 2017 Volume: 12 Issue: 1 Pages: 45-53
Publisher: Diyala University جامعة ديالى

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Abstract

Background: There is growing evidence that genetic aspects play a role in the onset and severity of periodontitis. However, numerous studies have pointed to the contribution of the human leukocyte antigens (HLA) alleles as a potential genetic factor in aetiopathogenesis of periodontitis.Objective: To investigate the association of human leukocyte antigens class I genotype (HLA-A) and the susceptibility and severity of chronic periodontitis in Iraqi patients. Patients and Methods: The study groups included 50 patients with chronic periodontitis and 20 healthy controls with clinically healthy periodontium. Periodontal parameters used in this study were plaque index (PI), gingival index (GI), probing pocket depth (PPD), clinical attachment level (CAL) and bleeding on probing (BOP). Five ml of venous blood were collected from each participant. DNA was extracted from blood samples, and HLA-A genotyping was performed by polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSO).Results: The present data revealed that the frequencies of HLA-A*33 was significantly higher in patients than in healthy controls (P= 0.0268).Conclusion: This study suggests that HLA-A*33allele may contribute to the increased susceptibility to chronic periodontitis.

خلفية الدراسة: هناك أدلة متزايدة على أن الجوانب الوراثية تلعب دورا في ظهور وشدة التهاب اللثة. ومع ذلك، فقد أشارت العديد من الدراسات إلى مساهمة أليلات مستضدات الخلايا البشرية (HLA) كعامل وراثي محتمل فيأسباب أمراض اللثة. اهداف الدراسة : أنجزت هذه الدراسة لبحث الارتباط بين مستضدات الخلايا البشرية الصنف الاول Aوالتعرض للاصابة لمرض النساغ المزمن في المرضى العراقيين وعما إذا كان هناك ارتباط موجود بين شدة التهاب اللثة وتعدد الأشكال الجيني.المرضى والطرائق : شملت مجموعات الدراسة 50 مريض لديهم التهاب اللثة المزمن و 20 الاصحاء معلثة صحية سريريا. اما فيما يخص مؤشراتماحولالاسنان التي تم قياسها في هذه الدراسة هي (مؤشرالصفيحةا لجرثومية, مؤشرالتهاب اللثة , عمق جيوب اللثة, مستوى الانسجة الرابطة سريريا و مؤشرالنزف عند التسبير). تم جمع خمسة مل من الدم الوريدي من جميع المرضى والضوابط. تم استخراج الحمض النووي (DNA) من عينات الدم، وبعد ذلك تم إجراء HLA-A التنميط الجيني عن طريق تفاعل البلمرة المتسلسل (PCR-SSO).النتائج: اظهرت الدراسة الحالية ان تكرارالاليل (HLA-A*33)كان معنويا نسبة عاليا في المرضى مقارنة بالأصحاء (P= 0.0268).الاستنتاجات: تقترح هذه الدراسة أن HLA-A*33 أليل يمكن أن تسهم في زيادة القابلية لمرض النساغ المزمن.


Article
Tumor Necrosis Factor-Alpha Gene Polymorphisms in Iraqi patients with Chronic Periodontitis
تعدد الأشكال في جين عامل نخر الورم ألفا ((TNF-α في المرضى العراقيين المصابين بمرض النساغ المزمن

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Abstract

Background: Chronic periodontitis is an inflammatory disease of bacterial etiology that results in the destruction of tooth supporting tissues, tooth mobility, and tooth loss. The inflammatory response of the periodontal tissues to infection is influenced by environmental and genetic factors. The polymorphism of tumor necrosis factor-alpha (TNF-α) has been reported to influence the expression of TNF-α, thereby playing a role in the pathogenesis of periodontitis.Objective: To study the genotyping of tumor necrosis factor-α at position (-308) and to find out whether any associations exist between the severity of periodontitis and the gene polymorphisms.Patients and Methods: The study groups included 50 patients with chronic periodontitis and 20 healthy controls with clinically healthy periodontium with an age range of 25-50. Everyone were analyzed for polymorphism of TNF-α gene at position (-308). Periodontal parameters used in this study were plaque index (PLI), gingival index (GI), probing pocket depth (PPD), clinical attachment level (CAL) and bleeding on probing (BOP). Five ml of venous blood was collected from all patients and controls. DNA was extracted from blood samples, and then the results of electrophoresis of polymerase chain reaction (PCR) products for this cytokine were subjected for sequencing and to locate the positions of possible mutations.Results: The results of sequencing for the tumor necrosis factor-α gene showed higher frequency of mutations in patient samples as compared to healthy control samples. A highly significant difference was found in the frequency of mutations among the six samples (4 patients and 2 controls) p=0.0002.Conclusion: The results of this study indicates that the (-308) polymorphism in TNF-α gene is associated with the susceptibility to chronic periodontitis.

خلفية الدراسة: مرض النساغ المزمن هو مرض التهابي من المسببات البكتيرية التي تؤدي إلى تدمير الأنسجة الداعمة للأسنان ، حركة الأسنان، وفقدان الأسنان. الاستجابة الالتهابية لأنسجة الاسنان الداعمة للاصابة تتأثر بالعوامل البيئية والوراثية.أن تعدد الأشكال لعامل نخر الورم ألفا (TNF-α) له تأثير على التعبير عن TNF-α، وبالتالي تلعب دورا في التسبب في التهاب اللثة.اهداف الدراسة : قد أجريت هذه الدراسة لدراسة التنميط الجيني لعامل نخر الورم α في موضع (-308) ولمعرفة ما إذا كان هناك أي أرتباط موجودة بين شدة التهاب اللثة وتعدد الأشكال الجيني.المرضى والطرائق : شملت مجموعات الدراسة 50 مريض لديهم التهاب اللثة المزمن و 20 الاصحاء مع لثة صحية سريريا وكانت أعمارهم تتراوح ما بين25- 50 سنة. اما فيما يخص مؤشرات ما حول الاسنان التي تم قياسها في هذه الدراسة هي (مؤشر الصفيحة الجرثومية , مؤشر التهاب اللثة , عمق جيوب اللثة , مستوى الانسجة الرابطة سريريا و مؤشر النزف عند التسبير). تم جمع خمسة مل من الدم الوريدي من جميع المرضى والضوابط. تم استخراج الحمض النووي (DNA) من عينات الدم ثم بعد ذلك أُجري الترحيل الكهربائي من منتجات تفاعل البلمرة المتسلسل (PCR) ، وأُرسلت النتائج لمعرفة التتابعات وتحديد اماكن الطفرات المحتملة.النتائج: أظهرت نتائج الكشف عن تسلسلات القواعد النتروجينية لجين عامل نخر الورم ألفا ((TNF-α تردد أعلى من الطفرات في عينات المرضى مقارنة عينات من الأصحاء. تم العثور على اختلاف كبير جدا في تردد الطفرات بين العينات الست (4 مرضى و2 الضوابط) p=0.0002.الاستنتاجات: نتائج هذه الدراسة تشير إلى أن تعدد الأشكال في الجين TNF-α في موضع (-308) يمكن أن تسهم في زيادة القابلية لمرض النساغ المزمن.

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