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Article
Cephalometric analysis of craniofacial deformity of β- thalassemic major by using computed tomography

Authors: Alia T. Thajeel --- Jamal Ali Al-Taei جمال علي الطائي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2013 Volume: 25 Issue: 4 Pages: 39-43
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Thalassemia is a hereditary anemia resulting from defects in hemoglobin production. β- thalassemiacaused by decrease in the production of β- globin chains affect multiple organs and is associated with cranio-orofacialdeformity which include prominent cheek bones and protrusive premaxilla with depression of the nasal bridgeoften referred to as “rodent or chip-munk face” with small mandible and Cl.II skeletal relationship. This study aimed toinvestigate cephalometric craniofacial parameters (skeletal) of β- thalassemic major patients by using computedtomography and to compare findings with a group of healthy patients in the same age group.Subject, Materials and Method: The study included (40) patients with β- thalassemic major (20 female and 20 male)with age 8-15years compared with (40) healthy controls (20 female and 20 male) with the same age, who admittedto spiral computed tomography scan unit in X-ray institute in AL-KARKH general hospital to have computedtomography scan for the brain, paranasal and for orthodontic purpose from October 2011 to June 2012.Cephalometric analysis of the selected four skeletal linear measurements and four skeletal angular measurements,by using direct analysis with software programs in a computer which is part of the computed tomography machine.Results: There was no statistically significant difference between thalassemic males and females in all selectedskeletal linear and angular measurements, Thalassemic patients have a highly significant large ANB angle and cl IIskeletal relationship, significant larger gonial angle, Mandibular base length (Me-Go) is significantly shorter,Retrognathic mandible (SNB) is significantly decreased, highly significant shorter in total anterior facial height (N-Me)and total posterior facial height (S-Go), and also the Ramus height is highly significant decreased.Conclusion: In thalassemic patients, the skeletal morphology is recognizable and mandible is retrognathism and theyhave skeletal cl. II pattern and Computed tomography is useful tool for assessment of the cranio facialmeasurement.


Article
Chronological aِge estimation in adolescent and young adult subjects in relation to mandibular third molar development using digital panoramic image

Authors: Jaafar J. Attar جعفر العطار --- Jamal Ali AL-Taei جمال علي الطائي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 2 Pages: 47-50
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Predicting chronological age in adolescents and young adults can be crucial in Medico legal contextsand the third molar is the only developing tooth during this period that used to determine chronological age.The purpose of this study was to estimate the chronological age based on the stages of mandibular third-molardevelopment following the eight stages (A–H) method of Demirjian et alMaterials and methods: The sample consisted of 436 Iraqi adolescents and young adults subjects have been chosenwith known chronologic age (range, 14–24 years) and sex (162 males and 274 female), digital panoramicradiograph had been taken for each examined subject, Demirjian’s grading has been used to assess third molardevelopmentResults: Statistically significant differences (P _ 0.05) in third-molar development between males and females wererevealed regarding the development stages D,E and F. Third-molar genesis was attained earlier in males than infemales. Statistical analysis showed a strong correlation between age and third-molar development for males (r 2 _0.91) and for females (r 2 _ 0.87).Conclusion: It was concluded that the use of mandibular third molar development stages using Demirjian methodcan be considered as good valuable chronological age indicators in adolescents and young adults


Article
Computed tomographic measurement of maxillary sinus volume and dimension in correlation to the age and gender (comparative study among individuals with dentate and edentulous maxilla)

Authors: Hussein Haleem Jasim حسين حليم جاسم --- Jamal Ali Al-Taei جمال علي الطائي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2013 Volume: 25 Issue: 1 Pages: 87-93
Publisher: Baghdad University جامعة بغداد

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Abstract

Background : Although development and progress in various diagnostic methods, but still identification of remnantsof skeletal and decomposing parts of human is one of the most difficult skills in forensic medicine . Gender and ageestimation is also considering an important problem in the identification of unknown skull.The aims of study: To estimate volume and dimension of maxillary sinus in individuals with dentate and edentulousmaxillae using CT scan, and to correlate the maxillary sinus volume in relation to gender and age.Materials and Methods : This study included 120 patients ranged from (40-69 years), divided into two groups, dentategroup with fully dentate maxilla and edentulous group with complete edentulous maxilla, and each groupcomposed of 60 patients (30 males and 30 females) who admitted to spiral CT scan unit in X-ray Institute inBaghdad to have CT of the brain and paranasal sinuses from October 2011 to June 2012, who had complaints ofheadaches or with suspection of sinusitis but without pathological findings in maxillary sinuses. The maxillary sinusvolumes and dimensions (width, depth, and height) were measured with the help of the computer software in SpiralCT scan system.Results : The statistical analyses of maxillary sinus measurements for dentate and edentulous groups showed that thevolume and dimensions of maxillary sinuses in both groups were larger in males than females and they tend todecrease with the older age, in addition it is found that there was no significant differences in measurements ofmaxillary sinuses between dentate and edentulous groups, but the exception was in height measurements whichwere significantly higher in edentulous than dentate group for both genders.Conclusion: It's found that the volumes and dimensions of the maxillary sinuses were larger in males than in females,in addition to that they tend to be less with the older age, so the Computed Tomography measurements of maxillarysinuses may be useful to support gender and age determination in forensic medicine

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