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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
Evaluation of maxillary sinus septal type and height in partially edentulous maxilla using spiral computed tomography

Authors: Farah A. Hadi --- Areej A. Najm, --- Mohammed A. Kadhum
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2014 Volume: 26 Issue: 4 Pages: 116-119
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The presence of anatomic variations within the maxillary sinus such as septa has been reported toincrease the risk of sinus membrane perforation during sinus elevation procedure for implant placement. This studyaimed to measure the septal heights and correlate it with different types of septa.Material and methods: Thirty patients (15 males and 15 females) with partially edentulous maxillae and mean age(35) years were enrolled in this study. Sixty sinuses scanned with Spiral multislice Computed Tompgraphy, septalheight measured after evaluation of septal type whether it was primary or secondary.Results: The results showed that 72.5 % of the septa detected were primary and this is statistically significant whencompared with the percentage of secondary type (27.5%). There was a statistically significant difference in theheight of septa between the two types, and the primary septa were higher. There was no significant differencebetween septal type and sex.Conclusions: A sound knowledge of maxillary sinus anatomy and anatomic variations such as septa is essential toprevent complication during surgical interventions involving this region.

الخلاصة: ظھور الاختلافات التشریحیة داخل الجیوب الأنفیة مثل الحاجز تتسبب في زیادة خطورة ثقب غشاء الجیب الانفي خلال عملیة زرع الاسنان. تھدف ھذه الدراسة إلى قیاسارتفاع الحاجز داخل الجیوب الانفیة وربط ذلك المستوى مع الانواع المختلفة للحواجز.المواد والطریقة: ثلاثون مریضا ( 15 ذكور و 15 إناث) ذوي فك ادرد جزئیا ومتوسط عمر 35 سنة خضعوا للدراسة , 60 جیب انفي مسح وفحص باستخدام المفراس الحلزوني, تمقیاس ارتفاع الحاجز داخل الجیب الانفي بعد تحدید نوع الحاجز ان كان اولي او ثانوي.النتائج : 72,5 % من الحواجز التي وجدت كانت من النوع الاولي وكان الفرق ذو دلالة احصائیة عند مقارنتھ مع نسبة النوع الثانوي 27,5 %. . وجدت فروق ذات دلالة احصائیة فيارتفاع الحاجز بین النوعین الاولي والثانوي حیث كان الارتفاع اكبر في النوع الاولي. لم یوجد فرق احصائي بین نوع الحاجز او ارتفاعھ بین الجنسین.الاستنتاج: المعرفة السلیمة بتشریح الجیوب الانفیة والاختلافات التشریحة مثل حاجز الجیب الانفي یعد امر ضروري لمنع المضاعفات اثناء التدخلات الجراحیة في ھذه المنطقة.

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