CONE BEAM COMPUTED TOMOGRAPHY (CBCT) ANALYSIS OF OROPHARYNGEAL AIRWAY IN ANGLES CLASS II DIVISION I MALOCCLUSION FOLLOWING FUNCTIONAL APPLIANCE THERAPY

Abstract

Objectives: To evaluate and compare the alterations taking place in the oro-pharyngeal airway space with functional appliance between class I & treated class II division 1 subjects. The st Methods: udy comprised of forty ve participants. Of these, thirty subjects were divided into two groups (Group 1 & 2) who had Angles Class II Division I malocclusion. Subjects with Angles Class I malocclusion formed the control group (Group 3) with 15 subjects. Group 1 received standard twin block therapy and Group 2 received xed functional appliance. The control group received xed mechanotherapy. A full skull CBCT scan was taken pre and post treatment in the two study groups and the control group to check for changes that occurred in the oro-pharyngeal volume. The volume of the oro-pharyngeal airway space was analyzed by student's t test and Tukey's post hoc tests using SPSS Version 22.0. (For Windows) Group 2 and group 3 exhibited a Results: statistically signicant increase in the mean oropharyngeal space volume (p < 0.01) during the post treatment period when compared to the pretreatment. volumes. Increased oro-pharyngeal space was seen in twin block therapy Conclusion: since it brings about both skeletal and dento-alveolar changes while xed functional appliance showed comparatively less changes in the oropharyngeal space.