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Article
Accuracy of spiral computed tomography in evaluation of maxillary sinus septa among dentate and edentulous Iraqi subjects (Comparative study)

Authors: Farah Abdul Salam Hadi فرح عبد السلام هادي --- Ahlam A. Fatah احلام فتاح
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2014 Volume: 26 Issue: 2 Pages: 64-68
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Presence of maxillary sinus septa has been known to be a complicating factor for sinus elevationprocedure and implant placement in posterior maxilla. The maxillary sinuses septa are thin walls of cortical boneinside the sinus. They vary in number, location, and height. This study aimed to discover the accuracy of SpiralComputed Tomographic Scan in evaluation the maxillary sinus septa (prevalence, location, height) in subjects withdentate, partially edentulous and completely edentulous maxilla.Material and method: This study included (267) subjects ranged from (20-70 years), (132) male and (135) femaledivided into three groups, (97) fully dentate group, (102) partially edentulous group and (68) completely edentulousgroup who admitted to Spiral Computed Tomography Scan in Al-Karkh General Hospital in Baghdad to haveComputed Tomography Scan of the brain and paranasal sinuses for different diagnostic purposes from November2012 to April 2013. The maxillary sinus septa were evaluated in the axial and sagittal views and the data weresubjected to statistical analysis using Statistical Package for Social Sciences version 20.Result: The prevalence rate of septa was 77.3% among fully dentate maxilla sample. Almost the same prevalencerate was obtained in the other two study sample (partially edentulous maxilla 77.5% and completely edentulousmaxilla 76.5%).No important or statistically significant difference in prevalence was observed between the threestudy groups. Age and gender showed no important or statistically significant difference in prevalence rate in eachstudy group, the mean septal height was slightly higher in fully dentate group (7mm) compared to partiallyedentulous maxilla group (6.2 mm) and completely edentulous maxilla group (6.5 mm). The difference in meanbetween the 3 groups however was not significant statistically. The rate of septa at floor position was significantlylowest in fully dentate maxilla group (36.1%) compared to partially edentulous maxilla group (52.1%) and completelyedentulous maxilla group (53.3%).Conclusion: Spiral Computed Tomography is a precise diagnostic tool for the examination of this zone capable forinvestigating their location and height during different maxillary sinus surgical procedures. In the posterior maxilla,regardless of type of ridge (atrophy/edentulous or non-atrophy/dentate), the anatomical variation of sinus septa isdiverse in its prevalence and location


Article
The Relation of Maxillary Posterior Teeth Roots to the Maxillary Sinus Floor Using Panoramic and Computed Tomography Imaging in a Sample of Kurdish People

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Abstract

The relation of maxillary posterior teeth roots to the maxillary sinus floor is important for diagnosing and planning of many surgical procedures. In order to determine of this relation two imaging technique were used in this study.Paired panoramic radiographs and computed tomography images of maxilla from 27 subjects were taken and analyzed in the teaching hospitals of Sulaimani city during the period from Jan to Aug 2009. For both imaging modalities a total of 146 maxillary teeth were grouped according to their topographic relationship to the inferior border of the maxillary sinus followed Kwak et al. classification, were 0 indicated no contact between the root and inferior border of the maxillary sinus); 1 indicated that the root is in contact with the inferior border of the maxillary sinus; 2 indicated that the root is projecting laterally on the maxillary sinus cavity but its apex is outside the sinus boundaries; 3 and 4 indicated that the teeth roots that projected on the maxillary sinus cavity. Then roots were measured according to their projection lengths in the sinus cavity.Results of this study show that there was a high correlation between the two imaging technique for classification 0 and 1 relations. The OPG showed statistically significant (P>0.001) longer root projection in the sinus cavity in comparison with the root protrusion into the sinus measured by using CT images.As conclusion; for the majority of the roots projecting on the sinus cavity in panoramic radiographs, no vertical protrusion into the sinus was observed in CT images. Roots protrude into the sinus in the CT showed shorter projection length in comparison with panoramic radiography. Panoramic radiographs can provide adequate assessment about relation of the maxillary sinus floor. CT is indicated to provide the information about the relation to the maxillary sinus floor when there is protrusion detected in panoramic images.


Article
Digital lateral cephalometric assessment of maxillary sinus dimensions in different skeletal classes

Authors: Ayman H. Urabi ايمن عرابي --- Lamia H. Al-Nakib لمياء النقيب
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 1 Pages: 35-38
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Maxillary sinus is the largest of the four paranasl sinus, among the paranasal sinus its plays an importantrole in the formation of facial contours. Therefore, knowledge of the development and size of the maxillary sinus maybe crucial for diagnosing and treating various cases of malocclusion. The purpose of this study is to evaluate theeffect of malocclusion in three skeletal classes on maxillary sinus dimensions.Material and methods: Total of 120 lateral cephalograms were derived from subjects with skeletal Class I, Class II, andClass III malocclusions, classified on the basis of the A-N-B angle. Each malocclusion group consisted of 20 males and20 females ranging in age from 12 to 16 years. Two linear measurements and three area measurements were madeto evaluate maxillary sinus size. The procedure was accomplished by mean of computer and Auto Cad program.Results: it had been found that maxillary sinus dimensions were significantly Larger in male than in females in differentskeletal malocclusion classes, skeletal malocclusion classes has no effect on dimensions of maxillary sinus except inmale class II skeletal malocclusion.Conclusion: Skeletal classes malocclusion has no effect on dimension of maxillary sinus except in male class II skeletalmalocclusion, male showed significantly greater maxillary sinus length, maxillary sinus height, and maxillary sinus areathan that of female in all skeletal classes.


Article
Maxillary Sinus Measurements in Different Age Groups of Human Cadavers

Authors: Mohammad A. Abd-alla --- Abdul-Jabbar J. Mahdi
Journal: Tikrit Journal for Dental Sciences مجلة تكريت لعلوم طب الاسنان ISSN: 20731213 Year: 2014 Volume: 3 Issue: 1 Pages: 107-112
Publisher: Tikrit University جامعة تكريت

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Abstract

The maxillary air sinus is the largest air sinus among the four air paranasal sinuses, which is a cavity in the body of maxilla. It is pyramidal in shape consisting of base, apex and four sides; its base comprises the thin lateral wall of nasal cavity. This study carried out at the Institute of Forensic Medicine in Baghdad and the Forensic Medicine Unit in Tikrit Teaching Hospital during the period from January 2010 to July 2011. A randomized sample of 110 human cadavers that arranged in four different age groups and dissected to study the three dimensions of both maxillary sinuses in both sexes by using a standard flexible tape measure or vernier caliper. The mean value of the maxillary sinus length in males was (36.4 ± 4.6 mm) and in females was (33.9 ± 4.2 mm); from these results, the mean value of males was significantly greater than that of females. On the other side, the mean value of the maxillary sinus width in males was (27.4 ± 4 mm) and in females was (25.3 ± 3.9 mm); therefore, these results demonstrate that the maxillary sinuses were wider in males than females. For males, the mean value of the maxillary sinus height was (35.1 ± 3.9 mm) and for females was (30.8 ± 3.6 mm). From these findings, a higher significant difference between the mean values was found; also there was a high significant difference between the two genders because the mean value of the maxillary sinus height for males was significantly higher than that for females. According to age groups of the present study, group 1 of maxillary sinus found to be still in growing state and not reaching its full size. Group 2 showing an extensive growth in maxillary sinus length and width, especially on the right side. Group 3 might partly showing growth in maxillary sinus length and height, which indicates that at this age the maxillary sinus reaches its full height. Finally, group 4 might partly indicates that the maxillary sinus reaches its full growth if it fails to reach it in group 3. The findings of the present study disagree with that done by Parks (1) who made measurements for the maxillary sinuses on normal Korean adults using computed tomography, since these differences were may be due to ethnic variations. Also due to race differences, this study disagree with Fernandes (2) who studied the maxillary sinus in European and Zulu using computed tomography


Article
Intentional penetration of dental implants into the maxillary sinus: a retrospective study
الاختراق المتعمد لزراعة الأسنان في الجيب الفكي العلوي: دراسة بأثر رجعي

Author: Omed Ikram Shihab
Journal: Zanco Journal of Medical Sciences مجلة زانكو للعلوم الطبية ISSN: 19955588/19955596 Year: 2017 Volume: 21 Issue: 1 Pages: 1536-1539
Publisher: Hawler Medical Univeristy جامعة هولير الطبية

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Abstract

Background and objective: Perforation of the maxillary sinus by a dental implant isan issue of concern by many dental implant clinicians. This study aimed to assess thesuccess rate and consequences of dental implants emerging into the maxillary sinus.Methods: The maxillary sinus was intentionally perforated for dental implant placementin 35 patients with reduced posterior maxillary bone height (4 mm or more). A total of 70implants engaged bicortically and emerged into the sinus. Nineteen female and 16 malepatients were involved in the study. The patients were followed up for sinus complicationsand dental implant success.Results: From the total, only two implants were failed; one during gingival formerplacement and the other after loading by one year. No patient presented with sinusitisclinically and radiographically. Three patients developed epistaxis just on the day ofsurgery and became well after on.Conclusion: Within the limits of this study, dental implant emergence into healthymaxillary sinus is considered a safe and successful procedure.


Article
Relationship between permanent maxillary canine and floor of the maxillary sinus through aging

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Abstract

AbstractThe maxillary sinus are pyramidal shaped cavities in the mid-facial aspect of theskull; they are bilateral structures, located beside each nasal fossa. Knowledge of therelationship between the root apex and the inferior wall of the maxillary sinus iscrucial for diagnosis and treating a sinus pathosis as well as in assisting dentalimplantation, endodontic procedures and orthodontic treatment. Thirty patientsattending Al-Ma’amoon dental centre were selected in this study according to aspecial criteria. Four digital periapical x –rays were taken for each patient using dentalx – ray machine two views demonstrated both right and left permanent canines tomeasure the length of each tooth by direct double click technique, the other two viewswere taking with concentration on the apical area of each tooth, to measure the exactdistance between the apex of the tooth and the floor of the maxillary sinus. Results ofthis study found that the distance between the apices of right permanent maxillarycanines and the base of maxillary sinus was greater than that of left side and thedistance between the canine apex and the floor of maxillary sinus increasing with increasing age.


Article
The detection of experimental abnormality on the floor of maxillary sinus using two different radiographic techniques

Author: Dr. Ahlam A. Fattah B.D.S M.Sc.( Ass. Prof.) د. احلام فتاح
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2006 Volume: 3 Issue: 4 Pages: 367-370
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The aim of this study is to confirm the ability of digital panoramic (program 20sinus projections) in detection of maxillary sinus disease.The represented of radiopaque mass at the floor of maxillary sinus of a dry skull wascompared in digitalWater's and panoramic (programs 20 sinus) projections.The mass with a diameter of 10mm situated on the floor of the maxillary sinus.The radiopaque mass was shown better by digital panoramic (program 20 sinusprojection), while the digitalWater's projection was less effective.the digital panoramic (program 20 sinus projections) proved more effective indetection masses on the floor of maxillary sinus than digital Water's projection whereit's not clearly detected due to superimposition of maxillary molar teeth


Article
Localization of foreign body in the maxillary sinus using multi slice CT scan

Author: Omar Basheer Taha Al-tekreeti.
Journal: Tikrit Journal for Dental Sciences مجلة تكريت لعلوم طب الاسنان ISSN: 20731213 Year: 2016 Volume: 4 Issue: 1 Pages: 63-67
Publisher: Tikrit University جامعة تكريت

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Abstract

Foreign body can be defined as any matter that created out of scope of the body but inter the body due to injury, Plain radiograph, computed tomography scan ,magnetic resonance imaging and ultrasonography could be used to assess and localize the foreign body, In this case report we will explain a case of foreign body established in the maxillary sinus and how CT scan was useful in determine the position of this foreign body, the surgeon reported that computed tomography scan was useful in such cases, so it can be concluded that computed tomography scan can assess the size and shape of the precisely and can give the exact position of foreign body but the patient receive higher dose of radiation rather than the dose has been received from dental panoramic tomography.

Keywords

CT --- X-ray --- foreign body --- maxillary sinus.


Article
Correlation between Time Elapsed after Maxillary Teeth Extraction and Maxillary Sinus Pneumatization

Author: Ali S. Al-Haddad
Journal: Karbala Journal of Medicine مجلة كربلاء الطبية ISSN: 19905483 Year: 2016 Volume: 9 Issue: 1 Pages: 2342-2350
Publisher: Kerbala University جامعة كربلاء

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Abstract

background: Pneumatization is an activity that occur physiologically in all paranasal sinuses during the growing period, causing them to increase in volume. Pneumatization of the sinus after extractions can have various treatment-planning implications, such as reduction of the alveolar bone height available for implants, orthodontic miniscrew or complication in preprosthetic surgery.Aim of the study: To find the correlation between rate of pneumatization of maxillary sinus and time after extraction of the related teeth. Subjects, material and methods: A total of 96 panoramic radiograph used to measure the supero-inferior differences of the sinus floor position by using interorbital line and 2 zygomatic lines as a reference lines after one to more than 10 years of the unilateral extraction of one of the maxillary second premolar, first molar or second molar tooth of 48 experimental subjects to make a comparison with the contralateral 48 control subjects with bilateral present mentioned teeth. Results: 48 control subjects show no statistically significant mean difference between the one side and the adjusted contralateral side. There was statistically significant increase in the side of the missing tooth compared to that of the contralateral side. The site of the missing tooth is associated with an average increase in distance of 2.53mm from the comparable 0.22mm in the control subjects, and this change was statistically significant. There is a moderate strong positive linear correlation coefficient between time interval and maxillary sinus pneumatization r=0.45 P<0.001.Conclusion & discussion: The pneumatization of the maxillary sinus is related to the time interval since extraction. The longer the time interval the more maxillary sinus pneumatization.


Article
Prevalence and localization of the posterior superior alveolar artery in relation to the floor of the maxillary sinus and alveolar crest among sample of Iraqis using computed tomography

Authors: Abdullah Ahmed Ibrahim عبدالله احمد ابراهيم --- Lamia H. Al Nakib لمياء حامد النقيب
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2017 Volume: 29 Issue: 3 Pages: 54-58
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Posterior superior alveolar artery (PSAA) is branch of the maxillary artery. It usually supplies the lateral wall of the sinus and overlying membrane. Evaluation and awareness of the anatomy of maxillary sinus before surgery is crucial to avoid surgical complications. The aim of this study is to examine the prevalence, location of the (PSAA) in relation to the floor of the maxillary sinus and alveolar crest using computerized tomography (CT) scans.Materials and Methods: This study included 180 Iraqi subjects (99 males and 81 females) with age more than 16 years old. CT scans for (right and left) Maxillary sinuses were done for each patient. The information obtained was assessed in a coronal multi planar reconstructions images (MPRs) in order to obtain the following parameters: prevalence rate of PSAA, distance from the lower border of the artery to the: alveolar crest, the floor of the sinus and the medial sinus wall.Results: The prevalence of PSAA on CT images was 73.61% among total sample. Distance from the lower border of the artery to the alveolar crest was (18.42± 4.07) mm, and to the sinus floor was (8.99 ±3.86) mm and to the medial sinus wall was (12.68 ± 2.81) mm.Conclusions: CT scan is valuable tool in evaluation and localization of the PSAA before maxillary sinus surgery

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