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Article
Immunohistochemical Expression of Matrix Metalloproteinase-9 in Jaws and Long Bones Osteosarcomas

Authors: Bashar Hamid Abdullah --- Luay Edward Alkhuri --- Khitam Razzak Alkhafaji --- Salam Nihad Jawad**
Journal: Iraqi Academic Scientific Journal المجلة العراقية للاختصاصات الطبية ISSN: 16088360 Year: 2011 Volume: 10 Issue: 3 Pages: 403-407
Publisher: The Iraqi Borad for Medical Specialization المجلس العراقي للاختصاصات الطبية

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Abstract

ABSTRACT:BACKGROUND:Matrixmetalloproteinases (MMPs) are a class of matrix basement membrane degrading enzymes which were shown to be associated with metastases in several human tumors.OBJECTIVE:This study is aimed to investigate the potential effect of MMP-9 in imparting the frequently reported different behavioral pattern between jaws and long bones osteosarcomas.METHODS:Tissue blocks of ten cases of jaws osteosarcomas and another ten of long bones osteosarcomas were collected and stained immunohistochemically with monoclonal antibodies to MMP-9.RESULTS:The majority of cases (70%) were positive for MMP-9 expression which indicates a role in tumor spread, however; there was no significant difference between the sites.CONCLUSION:The study indicates that MMP-9 is probably not involved in the biologic differences between jaws and long bones osteosarcomas


Article
Assessment of Cysts and Cystic-Like Lesions of the Jaws and Their Effect on Adjacent Structures by Using Cone Beam Computed Tomography (CBCT)

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Abstract

Background: Preoperative radiographical assessment of the maxillofacial lesions is of a great importance in guiding the surgeon during surgical procedure in reducing post-operative complications. This study highlighted the application of CBCT scan in the assessment of maxillofacial cystic and cystic like lesions as a part of advanced radiology Materials and methods: A total of 20 patients (15 males and 5 females) participated in this prospective study. CBCT scan (Kodak 9500 CBCT) with (DICOM) software utilized to perform scanning to all patients in order to assess lesion extension, morphological features and it’s relation to the adjacent vital structures.Results: In this study, the total cystic and cystic like lesions involving the maxilla and mandible were (20) lesions. Statistical analysis of the collected data showed no significant differences between the radiographical records and surgical findings regarding diagnostic accuracy of the lesions.Conclusion: The validity of the CBCT in the assessment of maxillofacial cystic and cystic like lesions was similar to the surgical findings regarding lesion extension, expansion, perforation of buccal/or lingual plates, and relation to the adjacent vital structures.

Keywords

CBCT --- Jaw --- cystic lesion


Article
Beta angle in a sample of Iraqi adults with Class I skeletal and dental relations and its correlation with other craniofacial measurements

Authors: Mohammed Nahidh محمد ناهض --- Sara M. J. Al-Mashhadany سارة محمد جاسم
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2013 Volume: 25 Issue: 4 Pages: 145-150
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: This study aimed to determine the value of Beta angle for a sample of Iraqi adults with class I skeletaland dental relations and to verify the existence of sexual dimorphism and to find out the relation between this angleand other craniofacial measurements.Materials and Methods: Sixty dental students (23 males and 37 females) with an age ranged between 20-31 years oldand having class I skeletal and dental relations were chosen for this study. Each student was subjected to clinicalexamination and digital true lateral cephalometric radiograph. The radiographs were analyzed using AutoCAD 2007computer program to measure the angular and linear variables. Descriptive statistics were obtained for themeasurements for both genders and total sample; independent samples t-test was performed to evaluate thegender difference and Pearson's correlation coefficient test used to detect the relation between the Beta angle andother measurements.Results and Conclusions: The value of Beta angle in this study was 32.63°± 2.57°. When the Beta angle is less than 27°,the case is class II and when it is more than 38°, the case is class III. There is no genders difference regarding the Betaangle and this angle correlated significantly and positively with the mandibular length and articular angle andnegatively with ANB and saddle angles


Article
The relation between W angle and other methods used to assess the sagittal jaw relationship

Author: Sara M. Al-Mashhadany سارة المشهداني
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 2 Pages: 144-149
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: This study aimed to evaluate the mean value for the W angle in Iraqi adults with a Class I, II, and IIIskeletal relations and to verify the existence of sexual dimorphism, also to study the correlation between this anglewith the other methods (ANB, Wits appraisal, BETA angle, YEN angle) used for evaluation of the antero-posterior (AP)jaw relationship.Materials and methods: One hundred and fifty-two cephalometric radiographs of patients between the age of 18and 25 years were selected. They were again subdivided into Classes I, II, and III groups on the basis of Beta angle,Wits appraisal, and ANB angle, traced using AUTO CAD 2007. The W angle was measured between theperpendicular from point M on S–G line and the M–G line. The mean and the standard deviation for the W anglewere calculated. Independent sample t- test, the one-way analysis of variance, LSD and Pearson correlation wereobtained.Results: The results showed that a patient with a W angle between 51 and 56 degrees can be considered to have aClass I skeletal pattern. With an angle less than 51 degrees, patients are considered to have a skeletal Class IIrelationship and with an angle greater than 56 degrees, patients have a skeletal Class III and there is significantdifference in the mean value of W angle among the three skeletal patterns with a no gender difference. The Wangle had a negative significant relation with ANB in all three classes and with WITS appraisal in class III group, while ithad a positive significant relation with BETA and YEN angles in all the three skeletal relations


Article
Establishing A New Anatomical Indicator For Antero-Posterior Jaw Discrepancy

Author: Kasem Ahmed Abeas
Journal: Medical Journal of Babylon مجلة بابل الطبية ISSN: 1812156X 23126760 Year: 2016 Volume: 13 Issue: 4 Pages: 734 -740
Publisher: Babylon University جامعة بابل

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Abstract

To overcome the deficiencies, at least geometric drawbacks, associated with the most commonly available sagittal indicators (ANB, Wits), efforts were done to develop another an accurate and valuable mean for skeletal prediction.To establish the mean value of a new sagittal approach (µ angle) for the assessment of skeletal relationship in its different patterns and whether or not there is a correlation with the other cephalometric indexes.Depending on a predetermined criteria, the total study sample consist of ninety-four pretreatment lateral cephalometric radiograph of Iraqi subjects with a mean age (13.5± 2). Again it have been subdivided into three skeletal relations (I, II, III) according to the combined criteria of both (ANB and Wits appraisal) for each relevant class. µangle measured from A-B line and a perpendicular on Mandibular plane from point A.The mean values of µ angle were (22.16 ± 3.04; 13.56 ± 3.04; 28.84 ± 3.52) for class I; II; III, respectively and no significant gender differences were detected.Regardless sample subgroups, a strong negative significant correlation (P<0.001) was found between µangle and both ANB and Wits indexes. It was concluded that the new µ angle can accurately be utilized in clinical assessment of sagittal jaw relationship where the other skeletal measures such as ANB angle and Wits appraisal fail to accurately assess some of jaw relations due to anatomical and occlusal factors.


Article
Diagnosis of Actinomycosis (Lumpy jaw) in cattle
تشخيص مرض الفك المتضخم (Lumpy jaw) Actinomycosisفي الأبقار

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Abstract

In June 2009 suspected cases of Actinomycosis have been occurred in cattle farm in Abu–Ghraib. Ten 10 pus samples had been collected and isolation of the causative agent had been done as Actinomyces bovis and for the outhers it is isolated but not registered in Iraq

في حزيران عام 2009 حدثت إصابات مرضية في احد حقول الأبقار في منطقة أبو غريب مشكوك بإصابتها بمرض الفك المتضخم وتم جمع نماذج قيحية من عشر حالات منها وعزلت الجرثومة المسببة للمرض على أنها Actinomyces bovis وحسب علم الباحثين أنها معزولة ولكن لم تسجل لحد الآن في العراق


Article
Validity of Hounsfield Units in Skyview Cone Beam Computed Tomography to detect bone densities at different jaw sites during implant insertion

Author: Dr. Amal R.S. Mohammed, B.D.S., H.D.D., M.Sc. Rad. د. امل رؤوف
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2016 Volume: 13 Issue: 1 Pages: 105-111
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

AbstractBackground: The purpose of this study was to evaluate the bone densities byHounsfield Unit at jaw sites in sky view cone beam computed tomography andto compare these values to the optimal bone densities proposed in the literature.Materials and Methods: Thirty-six patients, 15 males and 21 females were assessed;CT data for different jaw sections and regions were compared using (t-test).Results: The means of bone density in all regions are higher in male than female. Themean bone density in the anterior mandible is higher ; the mean bone densitiesin the four jaw regions decreased in the following order in female or male orgeneral ( anterior mandible > anterior maxilla > posterior mandible > posteriormaxilla ) .Conclusion: The bone densities assessed by HU fell into the range of optimal bonedensities proposed in the literature.

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