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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.


Article
Radiological Assessment of Mandibular Retromolar Canal (MRMC) Using CBCT-Radiographs in a Sample of Iraqi Patients

Authors: Jamal Abid Mohammed جمال عبد محمد --- Zainab H. Al-Ghurabi زينب الغرابي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2016 Volume: 28 Issue: 3 Pages: 99-103
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Because of its clinical and surgical importance and lack of precise information about this rare andimportant anatomical landmark, this study was designed to detect the presence, configurations and length ofMandibular Retromolar Canal (MRMC) with aid of CBCT visualization.Materials and methods: In this retrospective study the data was obtained from Specialist Health Center in AL-Saddercity in Baghdad for (100) patients with 200 inferior dental canal, all of them referred to CBCT scan (Kodak 9500,French origin). The scanning was done with tube voltage 90 kVp, tube current with 10mA and exposure time was 10s., the field of view was measured with 5cm x 3.7cmwith 0.03mm voxel sizeResults: In the present study the prevalence of MRMC was 12% , 2 patients have ( two ) bilateral MRMC and 10patients have a unilateral canal, there was asignificant difference between two sides (left and right), the right sidewas 64.29% and left 35.71%, regarding to gender also there was a significant difference , female 33.3% and male66.7%. In this study there were three types of MRMC and there was a significant difference between them, the meanlength (hight) was 11.78 mm and mean horizontaldistance from canal to distal surface of the second molar was 18.5mm.Conclusions: MRMC also detectedin this study within the global percentage and configurations and should betaken with consideration in oral surgical procedures and radiological interpretations.


Article
An Assessment of Sagittal Condylar Position of TMJ Dysfunction in Centric Occlusion by Using Cone Beam Computed Tomography

Authors: Lamia H. Al-Nakib لمياء حامد النقيب --- Ako Omer Abdullah --- Saeed A.Abd Al-Kareem --- Sangar Hamid Ali
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2016 Volume: 28 Issue: 2 Pages: 58-62
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Temporomandibular joint (TMJ) is a compound articulation formed from the articular surfaces of thetemporal bone and the mandibular condyle.CBCT imaging of TMJ is that it allows accurate measurements of thevolume and surface of the condyle. The aim of the study is to assess the sagittal position of mandibular condyle inpatients with temporomandibulardysfunction using Cone Beam Computed Tomography in centric occlusion.Materials and Methods: CBCT images for all patients were obtained in an upright position using New Tom GianoCBCT with different field of view (11 x 8), (11 x 5), and (8 x 8) and exposure factors was changed accordingly usingNNT version 5.1 software for sagittal reconstruction, anterior, superior and posterior joint spaces was measured.Results: There was a significant change in the anterior, posterior and superior joint spaces when compared to normalfunctioning TMJ. The sagittal position of the condyle in glenoid fossa could be affected by TMJ dysfunction and itwould be positioned centrally but slightly inferior to the normal position according to the results of this study. Therewas no significant difference in the sagittal condylar position in glenoid fossa between sexes. There was significantdifference in the value of anterior, posterior and superior TMJ spaces between right and left sides of the mandible inboth normal cases and TMJD.Conclusion: Sagittal section of Temporomandibular joint revealed that TMJ dysfunction affects the joint spaces insagittal plane. It means significant changes occur in the value of anterior, posterior and superior joint spaces whencompared to normal functioning TMJ


Article
Cone Beam Computed Tomography in an Evaluation and Diagnosis of Anatomical Variations and Pathological Lesions in Maxillary Sinus Prior to Maxillary Sinus Lift Surgery

Author: Zainab H. Al-Ghurabi زينب حسن الغرابي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2016 Volume: 28 Issue: 1 Pages: 99-102
Publisher: Baghdad University جامعة بغداد

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Abstract

Abstract: Thorough assessment of the maxillary sinus is very important. Recently 3-dimensional image with ConeBeam Computed Tomography (CBCT) is very dependable in Maxillary Sinus diagnosis. The aim of this study is to:shade light on the role of (CBCT) diagnosis of the maxillary sinus anatomical variation and pathological findingamong smokers and nonsmokers prior to maxillary sinus lift techniques.Materials and Method: In this study 60 males with age ranged between 20-50 years old, referred for (CBCT)assessment of maxillary sinus in the Specialist Health Center of Al-Sadder city. The scanning were performed usingKodak 9500 (CBCT), the KV was 90, mA10 and scanning time 10 s. Voxel size 0.3mm with( DICOM ) software on amultiplaner reconstruction window in which the axial, coronal and sagittal plane could be visualized in 0.3 mminterval, 40 were smokers and 20 nonsmokers, both sides were evaluated to assess the presence of septa, maxillarysinus membrane (Schneiderian membrane)thickening, complete opacification and adenoid polyp.Result:The maxillary for nonsmoker patients (20) patients were clean and have no any pathological or anatomicalchanges, among smoker patients, it was found that 7 (17.5%) of them had a clean maxillary sinus, 25 (62.5%)patient from smokers, the mucosal thickening was clear and measured more than 4 mm, 20 (80%) of them bilateralmaxillary sinus were involved and 5 (20%) of them have a unilateral thickening, 6 (15%) of the smoker patient havebilateral involved adenoid with max sinus, and 2(5%) of them have full opacification., no septa was found in thisstudy.Conclusion:Cone Beam Computed Tomography(CBCT)was themost useful technique to diagnose maxillarysinusbefore maxillary sinus augmentation, an evaluation ofCone Beam Computed Tomography(CBCT)scans beforeimplant surgery or sinus augmentation procedures has extreme clinical importance in evaluation of anatomicstructures, such as thickening of the Schneiderian membrane and presence of pathological lesion such as adenoidpolyp.


Article
The Role of Cone Beam Computed Tomography in Determination of the Greater Palatine Foramen Position Among Iraqi Population

Authors: Weaam H. Abdullah --- Ali H. Abbas Alhussaini
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2018 Volume: 30 Issue: 1 Pages: 53-57
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The use of the cone beam computed tomography for analysing the position of the greater palatine foramen in relation to various anatomical landmarks is crucial in dentistry. The aims of the current study, firstly is to determine the greater palatine foramen position in relation to various anatomical landmarks by using cone beam computed tomography and secondly is to make a comparison of the measurements according to side, gender, and age. Materials and methods: This prospective study included 60 Iraqi patients (28males and 32 females) who selected according to availability of Inclusion criteria, which include age range (21 - 60 years), with no dentofacial deformities or pathological lesion at the maxilla. All patients had informed consent of this study. Measurements were taken for the distance from the greater palatine foramen to the pterygoid hamulas of sphenoid bone in sagittal view and from greater palatine foramen to alveolar ridge in the axial view by using cone beam computed tomography.Results: The average distances of the greater palatine foramen to the pterygoid hamulus and alveolar ridge were 9.16 ±1.14 mm and 5.16 ± 0.84 mm respectively, there was no significant difference of distance according to side, gender although the distances higher in male more than female, but there was significant difference according to age.Conclution: The use of cone beam computed tomography could prevent the complications of procedures carried out in the region of greater palatine foramen. The average distances from the greater palatine foramen to the alveolar ridge and pterygoid hamulus were statistically not significantly differ according to side, gender, but there was significant difference according to age


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


Article
Comparison of certain radiomorphometric facial indices in different facial types of Iraqi adults using Cone Beam Computed Tomography

Authors: Zahraa R. Ali --- Abeer B. Mahmood عبير باسم محمود --- Lamia H. Al Nakib لمياء حامد النقيب --- Maisaa Q. Muhamed
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2018 Volume: 30 Issue: 2 Pages: 66-70
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The human face has its special characteristics. It may be categorized into essentially three kinds in horizontal and vertical directions: short or brachyfacial, medium or mesofacial and long or dolichofacial. The aim of this study was to describe several orofacial indices and proportions of adults, according to gender in Iraqi subjects by using cone beam computed tomography .materials and methods: This prospective study included 100 Iraqi patients (males and females) ranging from 20 to 40 years. All subjects attended the Oral and Maxillofacial Radiology Department of Health Specialist Center for Dentistry in AL Sadr city in Baghdad taking cone beam computed tomography scan for different diagnostic purposes from October 2016 to May 2017. The facial index was used for determination of facial type. Subjects were divided according to gender and then by photoshope cs4 programe ,five variables were calculated : inferior face index, superior face index, chin-face proportion, chin proportion and mandibular proportion.Results: The average values obtained from the subjects divided according to genders that presented significant diffe-rences were: inferior face index and superior face index for males and inferior face index, superior face index and mandibular proportion for females. Conclusion: There were variation in some indices and proportions according to genders. In males groupe, inferior face index and superior face index had significant difference between the average of the facial types, while in female group, inferior face index, superior face index and mandibular proportion had significant difference between the average of the facial types


Article
Anatomical Study of Mental Foramen Using Cone Beam Computed Tomography in Selected Adult Dentate Kurdistan Patients

Authors: Khoshee Salih Hameed Al-Mufty --- Ali Sultan Al-Refai --- Faris Muhammed Mahmood
Journal: Medical Journal of Babylon مجلة بابل الطبية ISSN: 1812156X 23126760 Year: 2016 Volume: 13 Issue: 3 Pages: 679 -690
Publisher: Babylon University جامعة بابل

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Abstract

Mental foramen is a very important anatomical landmark in dentistry and knowledge about mental foramen is very important because it transfers the mental nerve and vessels. The aim of thisresearch was to study the morphology and morphometry of the mental foramen using cone beam computed tomography in dentate adult Kurdistan patients. Thirty nine cone beam computed tomography were studied to analyze the shape, position, distance, and diameter of mental foramen. It was found that the most common variation of mental foramen was oval shape, and situated in line between 1st and 2nd premolar, and apical to the apex of associated tooth,and these variations showeda nonsignificant differences with the gender and age. The mean distances from mental foramen to the alveolar crest in the right and left side was 13.37±2.41 and13.60±1.96 mm respectively, and the mean distances from mental foramen to the inferior mandibular borderin the right and left side was10.98±1.97 and10.82±1.95mm respectively. Statistical analysis showed no significant differences regarding the gender and side, but significant difference present regarding age group. The mesio-lateralmean distance in the right and left side was 3.87±0.85and 3.68 ±0.78 mm respectively. But the superior-inferior distance in the right and left side was 3.17 ±0.85 and3.25 ±1.00 mm respectively. Statistical analysis showed no significant relation present with the gender, age group, and side.Knowing the exact location of the mental foramens and its variations is very important andcan help toplan surgical procedures properly.


Article
Investigating the Correlation Between Palatal Depth and Width Measurements in Impacted Maxillary Canine Patients by Using Cone Beam Computed Tomography

Authors: Alah Dawood Mahmood --- 1Omar Faruq Mohammed
Journal: Journal of Oral and Dental Research مجلة طب الفم والاسنان ISSN: 23106417 Year: 2018 Volume: 5 Issue: 2 Pages: 32-39
Publisher: Iraqi Association for Oral Research الجمعية العراقية لبحوث طب الفم

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Abstract

Background Cone Beam Computed Tomography system of 3D digital acquisition can be used in various dental sections such as orthodontics, endodontic, implantology, surgery and oral diagnosis. Linear and angular measurements on Cone Beam Computed Tomography images are accurate, precise and can be used to assess the exact position of displaced canines. Objectives It is to investigate with cone beam computed tomography the correlation between the palatal depth, width and the upper canine impaction. Materials and methods The study sample consists of 57 CBCT images of 35 patients referred to Al- Shifaa private hospital with impacted maxillary canines and 22 control patients with fully erupted canines. These were evaluated by volumetric 3D imaging to accurately localize the normal or impacted canines. The palatal depth and width of the impacted canine and control cases were measured and compared.Results The statistical descriptive analysis showed no significant difference in palatal width measurements between the control and impacted canine groups. On the other hand, the LSD test showed a significant difference in the mean of palatal depth between the control cases and impacted canine cases. Conclusions Marked decreased palatal depth in impaction cases could be a factor in causing maxillary canine impaction


Article
Assessment of tempromandibular joint space and condylar position in patients with myofacial pain dysfunction syndromes by using cone beam computed tomography
تقييم مساحة المفصل tempromandibular والموقف اللولبي في المرضى الذين يعانون من متلازمات ضعف الألم الليفي العضلي باستخدام التصوير المقطعي المحوسب شعاع

Authors: Sangar Hamid Ali --- Sarkawt Hamad Ali --- Katayon Nathm Kurshid --- Hassan Ali Mahmood
Journal: Zanco Journal of Medical Sciences مجلة زانكو للعلوم الطبية ISSN: 19955588/19955596 Year: 2015 Volume: 19 Issue: 1 Pages: 929-934
Publisher: Hawler Medical Univeristy جامعة هولير الطبية

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Background and objectives: Joint space assessment and condylar relation in the glenoid fossa is considered as integral component of the clinical assessment of the patient with tempromandibular joint disorder. Any variant from normal tempromandibular joint may affect the diagnosis and management of the case. Methods: Thirty patients with unilateral myofacial pain dysfunction syndrome were included in this study (14 male and 16 female). Joint space analysis was performed by cone beam computed tomography for all patients. Analysis of data for joint spaces (anterior, middle, posterior, medial and lateral) was performed by using t-test. Results: The joint spaces and condyle positions in anterior, superior and posterior regions showed less joint space and statistically significant difference (P <0.05) from same joint space of normal side. No statistically significant differences were found in space value between middle and lateral condylar space of the diseased side and normal side of the patient. The joint spaces in normal sides were between 2 to 3.2 mm. Age and gender variations showed no statistical differences. Conclusion: The use of cone beam computed tomography for examination of tempromandibular joint space in patients with myofacial pain dysfunction syndrome give a good diagnostic criteria for affected side.

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