A CBCT Comparison of Condylar Modifications in Patients Treated with Twin Block Appliance

Abstract

Aims and Objectives- The aim of present research was to investigate condylar alterationsafter twin block functional appliance therapy by CBCT. Methodology- 24 patients treated by Twin Block appliance was used in this research. On 3D images, the
pre-treatment (T0) and post-treatment (T1) condylar volume was measured. Linear and angular measurements were also measured and compared using 3D images. The paired „t' test and Wilcoxon signed rank test were used to evaluate and compare variances between T0 and T1. Results- Increases in Condylar volume, Gonial angle, Lower Facial Height angle, linear measurement respectively, and reductions in angular measurement. Conclusion-Because of the changes in condylar length, growth of condyleoccurs in upward and backward direction, and mandibular rotation in downward direction, Twin Block appliance therapy rises the condylar volume, length of the mandible, size in between the condyles, and CC-Gn, angle of lower
facial height, gonial angle, and height of anterior face by transformationof the glenoid fossa and pushing the mandible forward, the Saddle angle, ANB angle, and Facial Convexity are decreased.