malocclusion
Conditions
Sponsors
Peking University Hospital of Stomatology
Eligibility
Sex/Gender
All
Age
14 Years to 35 Years
Inclusion criteria
Inclusion criteria: 1.Han Chinese patients aged 14–35 years at the start of orthodontic treatment; 2.No severe skeletal discrepancy (-1.3° < ANB < 6.7°); 3.Systemically healthy; 4.Body mass index (BMI) within the normal range of 18–24 kg/m²; 5.Availability of pre-treatment large-field CBCT and 3D facial scans with complete and analyzable image data;
Exclusion criteria
Exclusion criteria: 1.Previous orthodontic treatment (excluding early interceptive treatment); 2.Severe facial asymmetry (horizontal deviation of the chin > 3 mm); 3.Congenital craniofacial anomalies or syndromes; 4.History of facial soft-tissue defects or trauma; 5.Dental defects or missing teeth (except for cases in which premolar spaces are closed and regarded as extraction cases);
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Three-dimensional coordinates of facial soft-tissue landmarks;Change in soft tissue volume;Facial protrusion and curvature variation indicators; | — |
Secondary
| Measure | Time frame |
|---|---|
| Symmetry change score; | — |
Countries
China
Contacts
Public ContactWenhsuan Lu
Peking University Hospital of Stomatology
Outcome results
None listed