Malocclusion
Conditions
Interventions
The patients were treated with TPA:The molar anchorage was strengthened with TPA
Control Group:The molar anchorage was strengthened withnot TPA
Sponsors
Tongji Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology
Eligibility
Sex/Gender
All
Age
12 Years to 30 Years
Inclusion criteria
Inclusion criteria: (1)Class I&II malocclusion ?SNA=79°?SNB=84° (2)First premolar extraction treatmen and strong anchorage to reraction base on the clinical diagnosis required. (3)Permanent teeth have erupted. (4)There was no systemic disease of temporomandibular joint affecting orthodontic treatment.
Exclusion criteria
Exclusion criteria: (1)Older than 30 or younger than 12 (2)Class III malocclusion (3)Patients with systemic disease or bone dysplasia (4)Patients with progressive temporomandibular joint disease and severe periodontal disease (5)Poor self-discipline can not consciously wear the retainer as required
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Molar movement; | — |
Secondary
| Measure | Time frame |
|---|---|
| Oral CT data; | — |
Countries
China
Contacts
Public ContactGong SQ
Tongji Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology
Outcome results
None listed