Changes Of Morphology After Camouflage Therapy Of Skeletal Class Ⅲ Malocclusion Following Buccal Shelf Miniscews

Objective① To study the mechanics of nonsurgical treatment on female adult patients with severe skeletal class Ⅲ malocclusion in the permanent dentition following buccal shelf miniscrews.② To evaluate dental-skeletal and soft-tissue profile changes before/after treatment.Methods10 female patients with severe class Ⅲ malocclusion,diagnosed as indication for surgery,were selected. The average age was 22.16±2.92. All cases were treated with fixed appliances with buccal shelf bone screws and mandibular molar extraction. Traditional cephalometric analysis and pancherz analysis were performed before and after treatment.The data were analyzed with paired sample t-test and Pearson correlation analysis.Results①SNB angle significantly reduced and ANB angle significantly mcreased(P<0.05),lower incisors were significantly retracted(P<0.05)②In Pearson correlation analysis, there were negative correlation between changes of Cm-Sn-UL and ∠U1-NA (P<0.05), also the changes of LLP were positively correlated with the changes of ∠L1-NB(P<0.05).ConclusionA remarkable soft tissue changes were noted after camouflage treatment. Skeletal class Ⅲ malocclusion can be successfully treated with mandibular molar extractions and buccal shelf miniscrews.