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Article
The Usefulness of Mandibular Ramus as an Indicator in Sex Differentiation Using 3D Reconstructed Computed Tomography

Authors: Sahar Sh. Kadhim سحر كاظم --- Ahlam Ahmed Fatah احلام احمد فتاح
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2016 Volume: 28 Issue: 3 Pages: 92-98
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Determination of sex from an unknown human bone is an important role in forensic and anthropologyfield. The mandible is the largest and hardest facial bone, that commonly resist postmortem damage and forms animportant source of information about sexual dimorphism. Mandibular ramus can be used to differentiate betweensexes and it also expresses strong univariate sexual dimorphism. This study was undertaken to assess the usefulness ofmandibular ramus as an aid in sex differentiation using CT scanning among Iraqi population.Materials and methods: 3D reconstructed computed tomography scanning of 140 Iraqi Arab subjects, (7 0 malesand 70 females) were analyzed with their age range from 20-60 years old. The linear measurements were locatedand marked on axial and sagittal sections including right and left sides of the mandible.Results: For the all measurements for sexes the mean value for male were highly significant than female with (P=value < 0.001).A receiver operating characteristic curves was obtained for each variable to observe their overallperformance in sex determination. The area of maximum mandibular ramus height was found to be the bestparameter according to ROC analysis to establish the diagnosis of male (ROC=0.952cm for both unilateral andbilateral measurements). Age showed no statistical difference in the current study.Conclusion: 3D reconstructed computed tomography scanning plays an important role as a diagnostic method foranalyzing the linear measurements of the mandibular ramus in sex differentiation. Sex determination for isolated partof the skull (e.g. mandible) could be achieved, instead of complete skull, and the highest accuracy in sexdetermination can be obtained whether complete or part of mandible is available for examination


Article
Effect of gender, age and tooth loss on the dimensions of incisive canal, and buccal bone anterior to the canal (Computed Tomography study)

Authors: Ryaheen Ghazi Rashid رياحين غازي راشد --- Ahlam Ahmed Fatah احلام احمد فتاح
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2015 Volume: 27 Issue: 2 Pages: 79-85
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The incisive canal is an anatomical structure with an important location in the anterior maxilla,analyzing this canal and its relation to the bone anterior to the canal is necessary during dental implant. Aim of thisstudy is evaluated effect of gender, age and tooth loss in area of maxillary central incisors teeth on the dimensions ofincisive canal and buccal bone anterior to the canal using spiral computed tomography.Materials and Methods: Sample consists of prospective study for 156 subjects for both gender, they divided into twogroups, 120 dentate group (60 male and 60 female) with age ranging from (20-70) and 36 edentate group (withmissing maxillary central incisors) (18 male and 18 female) with age ranging from (50-70). All subjects attended toBaquba teaching general hospital in Diyala for computed tomography scan investigation for different diagnosticpurposes. The following were measured and recorded from sagittal section of CT for analysis 1-diameter and lengthof incisive canal.2- distance and length of buccal bone anterior to canal.Result: Gender had effect on the dimensions of incisive canal and buccal bones anterior to this canal, the meanvalues begin higher in male as compared to female. Dental status had effect on incisive canal length and buccalbone dimensions, mean values is higher in dentate than in edentate group, canal diameter remain unchanged withdental status. Age had no effect on all selected measurements in study sample. Duration of maxillary central incisorsteeth loss had effect on canal length and buccal bone dimensions mean values begin lower in long duration thanthat in short duration while it had weak effect on incisive canal diameter.Conclusion: Gender and dental status are important factors that can affect incisive canal and amount of boneanterior to canal.


Article
Localization of Maxillary Impacted Canine Using Cone Beam Computed Tomography for Assessmentof Angulation, Distance From Occlusal Plane, Alveolar Width and Proximity to Adjacent Teeth

Authors: Vian Fouad Rahman فيان فؤاد رحمان --- Ahlam Ahmed Fatah احلام احمد فتاح
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2017 Volume: 29 Issue: 1 Pages: 70-75
Publisher: Baghdad University جامعة بغداد

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Abstract

Backgrounds: Maxillary canine impaction is complicated and time consuming to treat, for being highly diverse in inclination and location; it may be a companied by root resorption of the neighboring teeth. CBCT has been used for its' diagnostic reliability in localization of impacted canine and revealing its' serious local complications.Objectives: Localization of maxillary impacted canine using cone beam computed tomography for assessment of angulation, distance from occlusal plane, alveolar width and proximity to adjacent teeth.Subjects and Methods: The study sample was 33 subjects 16 females and 17 males attended to Al-Wasitti general hospital in Baghdad city-Oral and maxillofacial radiology department for CBCT scan investigationfrom November/2015 to April/2016. By using theCS 9000 device, 3D images and coronal, axial and sagittal views obtained to perform the selected measurements.Results: Contact of impacted canine to the nearby teeth had a strong effect on their root resorption. Vertical or horizontal angulation measurement in axial view, was not possible for a number of cases.Comparison of the angulation measurement validity between axial and coronal views, had showed an obvious statistical difference in coronal view for vertical angulation, and in the axial view for horizontal angulation calculation. Correlation of the canine localizations found in the study with the measurements, showed a significant statistical difference with age and vertical angulation (coronal view). Age or gender correlation with the measurements wasnon significant statistically, except for age with vertical angulation (coronal view).Conclusion: utilization of CBCT provides a worthy data about the impacted maxillary canine localization, for more explanation and treatment of these cases surgically and by orthodontics.

Keywords

localization --- canine --- maxillary --- CBCT --- impaction


Article
Radiological Evaluation of The Anatomic Characteristic of Lingual Foramina and Their Vascular Canals in The Anterior Region of The Mandible Using Cone Beam Computed Tomography

Authors: Fatima Mohammed Abd Al-khuther --- Ahlam Ahmed Fatah احلام احمد فتاح
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2017 Volume: 29 Issue: 4 Pages: 53-57
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: presence of lingual vascular foramina and canals in the interforaminal regionmay increase the risk ofsurgical complications during implant placement or any surgical procedure in this area.Aim of this study is theradiological evaluation of the anatomic characteristic of the lingual foramina and their vascular canals in the anterior of the mandible using cone beam computed tomography.Materials and Methods: Prospective study including 72 Iraqi subjects (31 male and 41 female) ranging from 20 to 59 years, all subjects attended AL- Sharaa dental clinic in AL-Najaf AL-Ashraf city, scanned with CBCT from September 2016 to February 2017. Using 3dimentional and sagittal cross section to detect lingual foramina and their vascular canals. Their presence, number, diameter, position, and orientation were established.Results: Lingual foramina in the anterior mandible were viewed in whole sample. Number of lingual canals varied from (1-5), the average diameter of the canals was (0.81 mm). The average distance from the foramina to the base of the mandible and to the alveolar crest was (13.78 mm) and (16.05mm), respectively. There was no significant correlation found between age and gender on all selected measurements. There was significant association of diameter of lingual foramen with the count, situation, extent and direction of lingual canal through the mandible width.Conclusion: Cone beam computed tomography is an invaluable system in diagnosis and treatment planning of surgical procedures. It help in detection of various anatomic features of mandible like presence of lingual foramen and canals in the anterior mandible


Article
Assessment of Dental Implant Site Dimensions And Alveolar Bone Density in The Mandible Using Cone Beam Computed Tomography

Authors: Omran Khalaf Karim عمران خلف كريم --- Ahlam Ahmed Fatah احلام احمد فتاح
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2018 Volume: 30 Issue: 2 Pages: 34-40
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The quantity and the quality of available bone, influence the clinical success of dental implants surgery. Cone beam Computed tomography is an established method for acquiring bone images before performing dental implant. Cone beam computed tomography is an essential tool for treatment planning and post-surgical procedure monitoring, by providing highly accurate 3-D images of the patient's anatomy from a single, low-radiation scan which yields high resolution images with favorable accuracy. The aim of study is the Measurement of alveolar bone (height and buccolingual width) and density in the mandible among Iraqi adult subject using CBCT for assessment of dental implant site dimensions.Material and method:The study sample include (60) Iraqi subjects (30 male and 30 females) aged between 20-65 years, sagittal view of Cone beam computed tomography was obtained to measure the height ,width and alveolar bone density of the mandibular anterior area, while coronal view was used to measure the height ,width and alveolar bone density assessment of the mandibular premolar and molar areas. Measurement of mandibular bony height and width was in(mm)and each of the three mandibular areas were represented by seven consecutive measurements for bony height and width and these seven stations were set using an average distance of 2 mm apart while the bone density in Hounsfield unit (HU) with point of measurement represent the mean of density to the area located between the height and buccolingual width.Results:The Statistical analysis of linear measurements of mandibular bone which include the bony height , width and density showed that the mean values of all three measurements are significantly higher in males than females also there was statistically significant difference in the mean bone density of mandibular areas which was highest in anterior area and lowest in the molar area followed by premolar area among both gender, mandibular bony height showed a statistically insignificant very weak negative linear correlation with age in all the three examined mandibular areas while the effect of age on bucolingual width was significantly higher among subjects older than 50 years compared to those younger than 50 years old.Conclusion: The mean bony height was highest in anterior area and lowest in premolar area followed by molar area, while the mean bony width was lowest in anterior area and highest in molar area followed by premolar area , finally the mean bone density was highest in anterior area and lowest in molar area followed by premolar area

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