Evaluation of Upper and Lower Pharyngeal Airway and Hyoid Bone Position in Skeletal Class II Patients Treated with Forsus and Powerscope Appliance: A Prospective Study

Objectives: To assess and compare the change in pharyngeal airway dimensions hyoid bone position also to evaluate skeletal dental effects of Forsus Powerscope appliance Class II malocclusion patients with obstructive sleep apnea subjected 6 months fixed functional therapy. Methods: 30 class having day-time somnolence associated snoring requiring orthodontic treatment were selected randomly divided into groups. Patients treated MBT 0.022-slot aligned till 19x25 SS. Fixed was installed. Digital Lateral cephalograms traced for Skeletal, Dental, Airway Measurements Hyoid at pre-treatment (T1), before start therapy (T2) & end (T3) analysed using Dolphin software. Findings : Skeletal correction achieved same both Powerscope. showed significant improvement sagittal whereas produced dentoalveolar changes. increase Pre Post Whereas Bone moved more mesial superior Change similar dimension however no difference seen between Novelty: The study revealed that mandibular retrusion advancement appliances apnoea increased improved nasal breathing. upper lower significantly. Keywords: Functional Appliance; Forsus; Powerscope; Bone;