Investigating the Correlation between Freeway Space and Gonial Angle among Patients with Natural Dentition

Calculating the correct vertical relation between mandible and maxilla is  an important factor for success  of removable and fixed partial dentures. This study, , was performed in order to determine the correlation between Freeway Space (FWS) and gonial angle. This cross-sectional, analytical study was condcuted in 2018 on 128 patients. For measurement of correlation between FWS and gonial angle, the vertical dimension at rest (VDR), Vertical dimension of occlusion(VDO) and maximum intercuspation were recorded. The difference between VDR and VDO was reported as FWS. For measuring gonial angle, panoramic radiography was used and in order to find the correlation between FWS and gonial angle, independent t-test and the Pearson correlation test were employed. Significance level of the tests were set as P<0.05. The correlation coefficient between FWS and gonial angle, FWS and age, and gonial angle and age were reported asr=-0.052, 0.137, and -0.102, respectively. Furthermore, the significance level of difference in FWS and gonial angle between men and women was found to be p=0.267 and p=0.6. There was no significant relationship between FWS and gonial angle. Hence, the latter cannot be used for measuring the former.