Prevalence of Dehiscence and Fenestration on Incisors after Orthodontic Treatment in High-Angle Patients using Cone Beam Computed Tomography

To assess the prevalence of dehiscence and fenestration based on alveolar bone height (ABH) and alveolar bone thickness (ABT) on upper and lower incisors in malocclusions with high-angleafter orthodontic treatment using Cone Beam Computed Tomography (CBCT).CBCT examinations were performed on twenty-seven skeletal malocclusion high-angle patientsat RSKGM Faculty of Dentistry, Universitas Indonesia, for post orthodontic evaluation. The subjectswere divided into 3 groups based on their malocclusions. ABH and ABT were measured on CBCTcross-sectional images of the upper and lower incisors to determine the presence of dehiscenceand fenestration at labial and lingual aspects.Dehiscence was associated the most in class II malocclusion (24.8%) and fenestration in classI (3.7%) and class II (3.7%) malocclusion. The prevalence of dehiscence that occurred in lowerincisors was higher (39.2%) compared to upper incisors (23.5%). The prevalence of fenestrationoccurred in upper incisors was higher (5.7%) compared to lower incisors (3.4%).The prevalence of dehiscence was highest in lower incisors of class II malocclusion, whereasfenestration in upper incisors of class I and II malocclusion, with labial, was the most frequentlyaffected side