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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


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

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