Three dimensional comparison of maxillary sinus volume in patients with and without posterior crossbite Maxillary sinus volume

Background: To compare the maxillary sinus (MS) volumes of the patients’ with and without posterior crossbite (PCB). Method: The CBCT scans of 2 groups were studied: (1) 50 patients (mean age: 14.39±1.32 years)without posterior crossbite (NCB); (2) 24 patients (mean age: 14.15±1.53 years) with PCB. After the volume calculation with using Dolphin 11.0 (Dolphin Imaging, Chatsworth, Calif, USA) software, paired sample t test was used to compare the differences between the right and left maxillary sinus volume of each group. Independent sample t test was used to identify the left, right and mean maxillary sinus volume differences between groups. There were 372 individuals included in the study, ranging from ages 12-79, who were divided into seven groups according to age: 12-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79. CPITN values in each group were included. In addition, the level of education, frequency of brushing, and the oral appliances used in dental care were recorded. Results: No significant differences were observed between right and left maxillary sinus volume for each group (p> .05). Right, left and mean maxillary sinus volume calculated from PCB group was found significantly lower than those calculated from NCB group (p< .01). Conclusion: Right, left and mean MS volumes of PCB patients’ were significantly lower than NCB individuals.