Three-dimensional dynamic evaluation of a posed smile in normal occlusion and Class II malocclusion

摘要: Abstract Purpose The purpose of this study was to quantify the three-dimensional movements lips during a posed smile and verify differences in dynamic characteristics among normal occlusion Class II malocclusion. Materials methods subjects included 30 healthy female volunteers with occlusion, 23 dentoalveolar malocclusion, 20 adult patients skeletal measurements were generated using video-based tracking three high-speed cameras. Eight landmarks on used track lip movement. Scheffe method multiple comparisons identify significant both groups. Results lower point moved significantly faster farther backward group compared other upper quarter more medial than vertical cheilion those Conclusion Three-dimensional evaluation smiles showed movement between subjects.