Evaluation of maxillary sinus anatomical variation and pathologies through cone-beam computed tomography in patients with impacted third molars in the maxilla.

Aim: The aim of this study was to compare between the frequency of anatomical variation and pathology in the maxillary sinuses having the impacted third molars in the maxilla adjacent to the dental arch and the maxillary sinuses adjacent to the dental arch having the erupted third molars. Material and Methods: A total of 284 cone beam computed tomography (CBCT) images of the maxillary sinuses, 141 of which are adjacent to the impacted third molar teeth in the maxilla, and 143 of which are adjacent to the erupted third molar teeth, were retrospectively evaluated. In the CBCT images, the pathology, septa, accessory ostium, overpneumatization, Haller cell and teeth root relation with sinus were evaluated in each maxillary sinus. Results: There were no statistically significant differences in the frequency of pathology (p = 0.402), septa (p = 0.904) and overpneumatization (p = 0.798) between the maxillary sinuses adjacent to the impacted third molar dental arch and the erupted third molar dental arch. However, there was a statistically significant difference in the frequency of accessory ostium (p = 0.032) and Haller cells (p = 0.025) between the maxillary sinuses adjacent to the impacted third molar dental arch and the maxillary sinuses adjacent to the erupted third molar dental arch. Conclusion: In the present study, the frequency of accessory ostium and Haller cells in the maxillary sinuses adjacent to impacted third molar dental arches of the maxilla was found to be lower than in the maxillary sinuses adjacent to erupted third molar dental arches. [ABSTRACT FROM AUTHOR]

Copyright of Annals of Medical of Research is the property of Annals of Medical Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)