Role of herbst and fixed mechanotherapy in pharyngeal airway volume among class II patients
Anies Ahmed, Amit Khajuria
Aim: To evaluate the role of herbst and fixed mechanotherapy in pharyngeal airway volume among class II patients.Materials and Methods: This comparative study was conducted among sample of 20 Class II patients selected from department OPD; divided into 2 Groups i.e. Group I (10 patients) treated by Herbst appliance; Group II (10 patients) treated by fixed mechanotherapy. Pharyngeal airway volume, length and width evaluation was done using CBCT. Results: Significant increase in nasopharyngeal, velopharyngeal, glossopharyngeal, laryngopharyngeal and total airway volume in Herbst group was observed. Velopharyngeal length, glossopharyngeal length and nasopharyngeal airway width showed significant increase in Herbst group.Conclusion: Herbst therapy induces repositioning of tongue resulting in increased length due to posterior fall of uvula, hence airway volume increases drastically.