malocclusion
Conditions
Interventions
Group A:use Damon Q2 brackets
Group B:use Smartclip brackets
Sponsors
Hospital of stomatology, Jilin University
Eligibility
Sex/Gender
All
Age
18 Years to 30 Years
Inclusion criteria
Inclusion criteria: ? High maxillary canine: the cusps were eruptive, and the cusps were 2~6mm in the gingival square of the occlusal plane ? Middle and severe congestion in the anterior segment: the crowding degree >4mm? Adult patients: 18~30 years old (cervical spine stage up to C6) ? For patients with tooth extraction and correction: bilateral maxillary first premolars were extracted after diagnosis and analysis, and mandibular first premolars were not required.
Exclusion criteria
Exclusion criteria: Patients with systemic disease, history of orthodontic treatment, moderate and severe resorption of alveolar bone, impacted teeth or significant anatomical abnormalities in the upper jaw except for the third molar, and other unsuitable inclusion conditions were excluded.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Anterior teeth alignment efficiency;Variation in arch width;Lip inclination of central incisor teeth;Anterior movement of maxillary first molar; | — |
Countries
China
Contacts
Public ContactMin,Hu
Hospital of stomatology, Jilin University
Outcome results
None listed