The effect of Twin-Block orthopedic treatment on the morphology of facial soft tissue

Status

Recruiting

Phases

Early Phase 1

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR2100046334

Enrollment

Unknown

Registered

2021-05-14

Start date

2021-05-31

Completion date

Unknown

Last updated

2021-12-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

malocclusion

Interventions

Twin-Block treatment group:Twin-Block orthopedic treatment

Eligibility

Sex/Gender

All

Age

7 Years to 14 Years

Inclusion criteria

Inclusion criteria: 1. Angle Class II division I, mixed dentition or the early permanent teeth, the cervical spine staging of the lateral cranial radiograph is CV MS I-CV MS III, both male and female; 2. Distal molar relationship , Skeletal class II (ANB >= 4.5 degree); 3. profile mandibular retraction,improved profile after mandibular extension; 4. Coben analysis shows mandibular deficiency or an underdeveloped mandible relative to maxilla.

Exclusion criteria

Exclusion criteria: Obvious symptoms of temporomandibular joint disease, obvious facial deviation, facial syndrome, systemic congenital systemic disease, orthodontic treatment.

Design outcomes

Primary

Measure	Time frame
mark point displacement;angle change;distance change;	—

Countries

China

Contacts

Public ContactHu Min

Hospital of Stomatology, Jilin University

humin@jlu.edu.cn+86 13944938198

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026