Evaluation of Skeletal and Dentoalveolar Changes in Patients With Class II Div 1 Malocclusion Treated With Twin Block Appliance.

Objective The study was focused on evaluating the change in mandibular morphology following the Twin Block appliance therapy and recording its effect on the maxilla and maxillary dentoalveolar complex. Also, the results of the Twin Block appliance between males and females were compared.  Material and methods In this two-armed retrospective cephalometric study, 30 patients (mean age 12 years) treated with Twin Block appliance for the period of 8-12 months were chosen, and their records were obtained to analyze. These results were compared with 15 control subjects of the same age group chosen from the American Association of Orthodontics Foundation (AAOF) growth legacy collection: Michigan Growth Study Class II subjects. Cephalometric tracing was done, and data was processed for descriptive statistical analysis. Results Paired sample t-test and ANOVA test were performed to evaluate the differences in the pre-treatment (T1) and post-functional (T2) values. ∠ANB showed a mean difference of -4.71°±1.55° for males and 6.22°±6.78° for females, which is significant. The mandibular length (Co-Gn), for male subjects, the mean difference was 5.14±1.74 mm, and for female subjects, it was 6±2mm, which is highly significant; 49.88% of skeletal changes and 50.12% of dentoalveolar changes were reported to bring about Class II correction with Twin Block. Conclusion A successful increase in mandibular length was achieved using a Twin Block as a functional appliance. Also, the significant maxillary restraining effect was recorded. More skeletal changes were observed in males than females.

Class III Malocclusion Treated by Combined Orthodontic and Orthognathic Approach Along with Growth Prediction: A Case Report.

To devise a comprehensive treatment strategy for patients with Class III malocclusion, it is critical to address etiology in the process of differential diagnosis. Growth prediction has always been a part of the deduction science. It is important not only in treatment planning and treatment provision, but it is equally important in the evaluation of prognosis during retention and after retention. The visual treatment objective by Ricketts is a complete analysis and the first of its kind defining every aspect of malocclusion and also assessing where the etiology lies. Here, we present one such case of skeletal Class III in which the growth prediction has played a vital role in the comprehensive treatment planning and treatment outcome.

Treatment of Class II Malocclusion and Impacted Canines with Two-phase Orthodontic Treatment.

Twin Block appliance has been widely used for the treatment of Class II malocclusions in growing subjects, due to its versatility and its highly compliance nature. There are certain clinical indications where functional appliances can be used successfully in Class II malocclusion as in a growing patient. In using these appliances, the main concern is compliance of patients. This appliance simplifies the progression of treatment with fixed orthodontic braces later on. In this case, a 14-year-old adolescent was treated with Twin Block appliance followed by fixed appliances for finishing and detailing. The design and treatment effects are demonstrated in this case report.