Presentation Category
Research
Introduction/Context/Diagnosis
Objectives: To analyze condylar resorption, remodeling, and positional changes in Surgery First Approach (SFA) patients and assess correlations with cephalometric changes. The null hypothesis is that there are no significant differences in condylar changes between fixed orthodontics and Invisalign therapy post-SFA. Methods: In this retrospective observational longitudinal study, all patients were Class III and underwent SFA with mandibular setback and maxillary advancement. CBCTs were analyzed at initial (T1), post-surgery (T2), and final orthodontic treatment (T3) using 3D landmark identification. Twenty-eight patients received fixed orthodontic appliance treatment, and eighteen received Invisalign treatment. Regional superimposition analyzed condylar resorption, remodeling, and positional changes. Results: The Frankfort Mandibular Plane (MP-FH) increased in the fixed group and decreased in the Invisalign group. No significant dental changes were observed between the groups. Mandibular body length (Gonion to Pogonion) decreased more in the fixed group. No significant condylar changes were noted between the groups based on cephalometric values. Conclusion: Most skeletal variables showed no statistically significant differences between the groups post-surgery and after treatment completion. No condylar changes were observed in the SFA between the fixed and Invisalign groups. The null hypothesis is accepted, indicating no significant differences in condylar changes between the two treatment modalities. Acknowledgment: American Association of Orthodontists Foundation.
Location
Arthur A Dugoni School of Dentistry, 155 5th St, San Francisco, CA 94103, USA
Format
Presentation
Three-Dimensional Condylar Changes in the Surgery First Approach: A Comparison of Fixed Orthodontics vs. Invisalign Therapy
Arthur A Dugoni School of Dentistry, 155 5th St, San Francisco, CA 94103, USA
Objectives: To analyze condylar resorption, remodeling, and positional changes in Surgery First Approach (SFA) patients and assess correlations with cephalometric changes. The null hypothesis is that there are no significant differences in condylar changes between fixed orthodontics and Invisalign therapy post-SFA. Methods: In this retrospective observational longitudinal study, all patients were Class III and underwent SFA with mandibular setback and maxillary advancement. CBCTs were analyzed at initial (T1), post-surgery (T2), and final orthodontic treatment (T3) using 3D landmark identification. Twenty-eight patients received fixed orthodontic appliance treatment, and eighteen received Invisalign treatment. Regional superimposition analyzed condylar resorption, remodeling, and positional changes. Results: The Frankfort Mandibular Plane (MP-FH) increased in the fixed group and decreased in the Invisalign group. No significant dental changes were observed between the groups. Mandibular body length (Gonion to Pogonion) decreased more in the fixed group. No significant condylar changes were noted between the groups based on cephalometric values. Conclusion: Most skeletal variables showed no statistically significant differences between the groups post-surgery and after treatment completion. No condylar changes were observed in the SFA between the fixed and Invisalign groups. The null hypothesis is accepted, indicating no significant differences in condylar changes between the two treatment modalities. Acknowledgment: American Association of Orthodontists Foundation.
Comments/Acknowledgements
Presentation Category: Research