Cone Beam Computed Tomography Evaluation of Maxillary Sinus Before and After Sinus Floor Elevation

Abstract

Sinus lift surgery elevation is a procedure that requires radiological maxillary sinus evaluation and procedure planning. The condition of the maxillary sinus before and after sinus lift surgery was assessed. Sixty-five sinuses of 49 patients were included in the study. Preoperative and postoperative cone beam computed tomography (CBCT) scans were performed. The sinuses were analysed radiologically for pathological changes: mucosal thickening, ostia obstruction and accessory opening. The presence of concha bullosa in nasal cavity and septa in the maxillary sinus were recorded. The sinus volume also was measured before and after surgery. Thickened mucosa was found more often in postoperative scans than in preoperative scans (63.1% and 67.7%, respectively). Concha bullosa was found in 30 preoperative scans and in 33 postoperative scans. A correlation between mucosal thickening and ostia obstruction was found. The mean sinus volume decreased after surgery and the changes were statistically significant. In conclusion, changes of the maxillarysinus and nasal cavity can be detected with CBCT. Sinus lift surgery does not excacerebate the existing conditions of the maxillary sinus; however, there is a tendency for pathological features to increase after surgery. Sinus lift surgery is a safe surgery with regard to the maxillary sinus if performed with care.

Evaluation of the effect of direct sinus lift surgery on maxillary sinus volume by Mimics software

“…Neimane et al . [ 26 ] also agreed that changes in maxillary sinus volume after sinus lift surgery were statistically significant ( P value = 0.001), and the mean maxillary sinus volume before surgery was 19.03 ± 6.00 cm 3 . The mean sinus volume after surgery was reported at 16.64 ± 5.70 cm 3 .…”

“…In the past, several attempts have been made by several authors (Uchida, Krennmair, and Yamamichi) to achieve a relationship that can predict the volume and amount of biomaterials required before sinus lift surgery, but due to the complexity and different available methods, there has been no success in providing a standard relationship. [ 8 , 26 - 28 ] For example, Sonoda and colleagues published a study entitled “The relationship between the volume of the material and the rate of elevation of the maxillary sinus floor membrane,” which showed that an initial 0.1 ml of the material could enlarge the maxillary sinus membrane by as much as 3.5 mm. Also, VEH/BPE or VEH/MDE ratios should be less than 0.8 to prevent sinus membrane perforation.…”

“…Neimane et al . [ 26 ] also showed that sinus lift surgery had no significant effect on maxillary sinus thickness in the long run. In addition, Raghoebar et al .…”

An Unusual Maxillary Sinus Foreign Body: A Case Report

“…Another choice in evaluation of the paranasal sinuses is cone beam computed tomography (CBCT). It has advantages over the other imaging modalities in that there is low radiation exposure while still giving good imaging quality and resolution [ 22 ]. However, this imaging modality is not available in our hospital.…”