Short-term Volumetric and Minimal Area Changes in the Pharyngeal Airway After Use of a Fixed Functional Appliance: A Three-dimensional CBCT Investigation

Objective Functional appliances are used in orthodontics to bring about correction of mandibular retrognathism by forward positioning and eventually remodeling the condyle- glenoid fossa retain this new position. Research has shown that these have a significant effect on pharyngeal airway patients. The aim study was evaluate changes volume minimum constriction area using CBCT imaging after with an Advansync2 Class II corrector. Methods This single-center consisted 20 patients (mean age 14.8 years) who required retrognathism. were treated corrector for average 26 weeks. records taken at T0 (beginning treatment) T1 (end functional phase). segmented into lower nasopharynx, velopharynx oropharynx analyzed partial volume, total software [NewTom 3G TM (Newtom- Cefla S.C., Verona, Italy)]. Results volumes significantly larger than ( p = .003, .001). In addition, also improved each part .005, .022, Conclusion fixed appliance can be requiring improvement their dimensions. However, additional long-term studies recommended confirm findings.