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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
Postoperative assessment of dental implants by using multi-slice computed tomography

Authors: Resha J. Al-Sudani --- Lamia Al-Nakib لمياء حامد النقيب --- Shifaa H. Al-Naimi
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2013 Volume: 25 Issue: 4 Pages: 52-55
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Implantology is a fast growing area in dentistry. One of the most common issues encountered in dentalimplantation procedures is the lack of adequate preoperative planning. Conventional radiography may not be ableto assess the true regional three-dimensional anatomical presentation. Multi Slice Computed Tomography providesdata in 3-dimentional format offering information on craniofacial anatomy for diagnosis; this technology enables thevirtual placement of implant in a 3-Dimensional model of the patient jaw (dental planning).Patients, Material and Methods: The sample consisted of (72) Iraqi patients indicated for dental implant (34 male and38 female), age range between (20-70) years old. They were examined during a time period started from December2012 to April 2013. All the patients who subjected to implant treatment depending on the pre-operative panoramicradiograph were referred Al-Kharkh General hospital, spiral CT scan Department, for postsurgical assessmentevaluate the angulation of fixture in relation to the angulation of bone in coronal and sagittal sections by usingMulti-Detector Computed Tomography.Results: The present study showed that the angulation of implant affected by age, sector, and tooth position in thesame jaw, and not affected by gender.Conclusion: Multi-Slice Computed Tomography provides a great understanding about bone angulation, it necessaryas a diagnostic tool for treatment planning pre and post-operatively


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


Article
The multi-detector computed tomographical analysis of bone density in impacted maxillary canines

Authors: Nidhal H. Ghaib نضال حسين غايب --- Nadia B. Al-Ansari
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2013 Volume: 25 Issue: 3 Pages: 165-167
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Maxillary canines are important aesthetically and functionally, but impacted canines are more difficultand time consuming to treat, the aim of this study is to investigate with multi-detector computed tomography thecorrelation between the bone density and the upper canine impaction.Material and method: A sample of Unilaterally impacted maxillary canines from 24 patients (19 female, 5 male) whowere referred to accurately localize the impacted canines at al- Karkh general hospital were evaluated by avolumetric 3-d images by the multi-detector computed tomography to accurately measure the bone density of themaxillary cortical palate of the maxillary impacted canine side and compare it with the other side of the normallyerupted canine.Results: The statistical descriptive analysis showed that the ratio of the maxillary canine impaction was higher infemales than in males, also the it revealed that the mean bone density of the cortical bone was greater in themaxillary impacted canine side (affected side) than in the control side (the side of the normally erupted canine), theWilcoxon signed ranks test showed a significant difference in the mean bone density between the affected side andthe control side.Conclusions: The increased bone density of the maxillary cortical plate could be an obstructive factor that causemaxillary canine impaction

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