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  • م.م عمرابراهيم احمد
  • MSc Omar IBrahim Ahmed
  • تدريسي : تقنيات صناعة الاسنان
  • Teaching : Department of Prosthodontics Techniques
  • ماجستير امراض الفم
  • MSc Oral Pathology
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  • okok54321okok@gmail.com
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    المقررات المكلف بها

    المقررات المكلف بها - 3
    القسم المرحلة الفصل رمز المقرر الوحدات توصيف المقرر
    تقنيات صناعة الاسنان المرحلة الثالثة فصل اول OP 2 امراض الفم
    تقنيات صناعة الاسنان المرحلة الاولى فصل اول DA 4 تشريح الاسنان
    تقنيات صناعة الاسنان المرحلة الثانية فصل اول OH 3 انسجة الفم

    المحاضرات الالكترونية

    المحاضرات الالكترونية - 8
    العام المقرر القسم المرحلة المحاضرة
    2024-2025 امراض الفم تقنيات صناعة الاسنان المرحلة الثالثة Oral cancer
    2024-2025 امراض الفم تقنيات صناعة الاسنان المرحلة الثالثة Ulcerative Oral lesion
    2024-2025 امراض الفم تقنيات صناعة الاسنان المرحلة الثالثة Granulomatous diseases
    2024-2025 امراض الفم تقنيات صناعة الاسنان المرحلة الثالثة Periapical pathology
    2024-2025 امراض الفم تقنيات صناعة الاسنان المرحلة الثالثة pulp disease
    2024-2025 امراض الفم تقنيات صناعة الاسنان المرحلة الثالثة Dental Caries
    2024-2025 امراض الفم تقنيات صناعة الاسنان المرحلة الثالثة Oral Biopsy
    2024-2025 امراض الفم تقنيات صناعة الاسنان المرحلة الثالثة Introduction to oral pathology

    البحوث

    2018 Diyala Journal of Medicine
    Correlates Significantly with Histologic Grade in Salivary Mucoepidermoid Carcinoma Omar I Ahmed (BDS)1,Lehadh M Al-Azzawi (PhD)2 and Mustafa G Taher (PhD)3 Abstract Background: Metastasis associated protein-1 (MTA1) has been a recently identified as a unique gene playing important role in tumorigenesis and progression of cancer cells. Objective:To evaluate MTA1 expression and its predictive value in determining histologic grade of salivary mucoepidermoid carcinoma (MEC). Patients and Methods: MTA1 expression was evaluated by immunohistochemistry in paraffin-embedded tumor specimens blocks from 22 patients. Assessment of MTA1 immunostaining was achieved by counting the proportion of positively-stained tumor cells in 5 high power microscopic fields; and staining was analyzed in relation to clinicopathological variables. Results: MTA1 show nuclear and cytoplasmic expression in varying intensity in 95% of cases. No significant correlation was found between MTA1expression and age, gender, site of the tumor (p>0.05). However, statistically significant correlation was found between MTA1expression and clinical stage, nodal involvement (p=0.009 and 0.007; respectively). Regarding histologic grade, high MTA1 level was significantly associated with grade of tumors categorized by Auclair and Brandwein systems (<0.001 and 0.009; respectively). Conclusion:MTA1 expression significantly correlates with tumor grade and progression, and has a potential role in diagnosis and prediction of behavior in salivary MEC. Keywords: Salivary mucoepidermoid carcinoma, MTA1, Tumor grade, Metastasis.

    2020 J Bagh College Dentistry
    ABSTRACT Background: The grading systems of salivary mucoepidermoid carcinoma depend on different histologic and morphologic features. The aim of this study was to compare between Auclair and Brandwein systems according to their histologic criteria, and the type of cell predominant. Materials and Methods: Twenty-one case included hematoxylin-eosin (H&E) stained tissue slides that were diagnosed as MEC, originally categorized into low and high grade type regardless of the grading system, have meticulously undergone histopathologic review. The sample was graded according to criteria owing to Auclair and Brandwein methods. The predominant type of cells was determined by microscopic examination according to grade of tumor. Results: Regarding the Auclair method, 10 cases (47.6%) were low grade tumor, 11 cases (52.2%) were high grade type and none of them were intermediate type. By using Brandwein system for the same sample, 4 cases (19%) were low grade, 13 cases (61%) were a high grade tumor, and 4 cases (19%) were intermediate type. Even though, for both systems more than 35% of cases were predominated with epidermoid cells, and <15% showed mucous and intermediate cell predominance for each, whereas >30% were exhibited a mixed type of tumor cells. However, there was a significant correlation between the grading systems applied and the type of cell predominance (p-value <0.05). Conclusion: The number of cases distributed according to Brandwein system was increased as the level of histologic grade being raised, and the type of cells, which are relatively predominant, may be valuable in determining the histologic grade of

    2019 journal of International Dental and Medical Research
    "Background: Metastasis-associated protein-1 (MTA1) has been recently identified as a unique gene which plays a key role in tumorigenesis and progression of cancer cells. The object behind this study is to evaluate MTA1 immunoexpression and its relationship with predictive value of point- based grading systems in salivary mucoepidermoid carcinoma . Materials and methods: A total of 22 formalin-fixed, paraffin-embedded specimens of mucoepidermoid carcinoma were prepared for immunohistochemical staining with MTA1 antibodies. Assessment of MTA1 immunostaining was achieved by counting the proportion of positively-stained tumor cells in 5 high power fields; and staining was analyzed in relation to tumor grading systems and other clinicopathologic features. Results: MTA1 showed nuclear and cytoplasmic expression in varying intensity in 95% of cases. Non- significant correlation was found between MTA1expression and age, gender, site of the tumor (p>0.05). However, statistically significant correlation was observed between MTA1expression and clinical stage, as well, to nodal involvement (p=0.009 and 0.007; respectively). Regarding histologic grade, high MTA1 level was significantly associated with grade of tumors categorized by Auclair and Brandwein systems (p=0.001 and 0.009; respectively). Conclusion: MTA1 expression significantly correlates with tumor grade and progression, and it has a potential role to predict the prognosis of salivary MEC."




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