Frequency of mucous retention cyst of maxillary sinus in patients need implants using Cone beam computed tomography in Tabriz (2010)

Abstract

Evaluate the maxillary sinus for the presence of the retention cysts in implant patients using Cone Beam Computed Tomography (CBCT). Materials and Methods: CBCT images from 320 patients (168 females and 152 males), who were candidate for implant placement in the maxilla, were evaluated for the presence of the maxillary retention cysts. The single dome shaped image with the soft tissue density on the floor of the maxillary sinus without the cortical boundary was recognized as the retention cyst. The chi square test was used for the statistical analysis. Results: maxillary retention cyst was diagnosed in 31 patients (18 females, 13 males). Also two cases showed the involvement of both sinuses. The incidence was 10.3% only two patients reported the history of sinusitis. Chi square test did not show any difference between the females and males. Conclusion: We found a incidental rate of 10.3% of retention cysts in the implant patients. This rate is higher than the reported rate in the literatures. This difference might be due to imaging modalities which were used. Clinical significance: Ratention cysts of the maxillary sinuses usually are asymptomatic and usually dont need any treatment. However the dentists should be informed about the presence of the cyst and its management to avoid unnecessary interventions. Only in case of complicated cysts, the operation may be necessary.