Abstract
Objective The aim of this study was to evaluate the relationship between periapical lesion (PL) and maxillary sinus alterations (MSA) using cone beam computed tomography (CBCT). Study Design CBCT images of a dental radiology service were seen from January 2013 to December 2017 by a single previously calibrated examiner. PL was recorded when at least 1 posterior tooth presented radiolucency around the root apex indicating bone destruction. MSA observed were presence of mucous retention cyst, sinus polyp, antrolith, and mucosal thickening above 3 mm. Data were analyzed with descriptive statistics and chi-square test in SPSS 21.0. Results A total of 865 maxillary sinuses of 560 patients (63% females; mean age in years ± SD, 48.9 ± 16.8), were included in the study. It was found at least 1 type of MSA in 62% of the maxillary sinuses and the most common alteration was mucosal thickening above 3 mm (34%). PL was observed in 52% posterior region of the maxilla and in these areas the proportion of present MSA (67%) was significantly higher (P Conclusions The presence of PL showed association with several MSA.
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