PurposeTo determine whether odontogenic maxillary sinusitis, either alone (OMSw/oFB) or in combination with fungus ball (OMSwFB), is associated with specific clinical characteristics and treatment outcomes compared to non-odontogenic maxillary sinusitis. Materials and MethodsA retrospective cohort study was performed on patients who underwent surgical treatment for chronic maxillary sinusitis between 2013 and 2021. OMSw/oFB and OMSwFB patients, were selected as the study group, while patients diagnosed with non-odontogenic maxillary sinusitis (non-OMS) were enrolled as the control group. Predictor variables were OMSw/oFB and OMSwFB. Outcomes were clinical presentation, postoperative complications, and treatment outcome. Descriptive, bivariate, and multiple logistic regression statistics were calculated, and the significance level was set at P ≤ 0.05. ResultsThe sample included 200 patients with a mean age of 49.6 ± 20.1 years and 57.5 % were men. Of the 200 patients, 123 (61.5 %) had non-OMS, 55 (27.5 %) had OMSw/oFB, and 22 (11 %) had OMSwFB. Multivariate analysis showed that OMSw/oFB was associated with more successful treatment rates (OR = 8.19, p < 0.01), whereas OMSwFB was associated with a less favorable outcome (OR = 0.27, p = 0.03). Age was associated with an unfavorable outcome in both OMS groups (OR: 0.98, p = 0.03 and p = 0.03, respectively), but no significant associations with other outcomes were found. ConclusionThis study suggests that OMSwFB is a recalcitrant form of OMS associated with a higher risk of persistent symptoms and less favorable outcome. These patients should be informed about the challenging nature of the disease and closely monitored.
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