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The therapeutic efficacy of clear aligners combined with high-pull headgear J-hook traction in adolescents with skeletal Class II malocclusion

The therapeutic efficacy of clear aligners combined with high-pull headgear J-hook traction in adolescents with skeletal Class II malocclusion

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2500104105
Enrollment
Unknown
Registered
2025-06-11
Start date
2025-07-30
Completion date
Unknown
Last updated
2025-06-16

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

Conditions

skeletal class II malocclusion

Interventions

Clear aligner group:None
High-pull headgear-activator group:None

Sponsors

West China Hospital of Stomatology, Sichuan University?
Lead Sponsor

Eligibility

Sex/Gender
All
Age
9 Years to 14 Years

Inclusion criteria

Inclusion criteria: The adolescent patients aged 9-14 years who completed treatment from 2018 to 2023 were retrospectively diagnosed with bony class II malocclusion (ANB angle>=5°, Wits value>=3mm), vertical growth type (SN-MP>=35°, FMA>=28°), were at the peak of growth and development (annual height growth >=5cm), and the imaging data before and after treatment were complete.

Exclusion criteria

Exclusion criteria: 1.Congenital craniofacial deformities (e.g., cleft lip and palate); 2.History of temporomandibular joint disorders (TMD); 3.Systemic bone metabolism disorders; 4.Previous orthodontic treatment history; 5.Poor treatment compliance (J-hook activator wear time <10 hours/day).

Design outcomes

Primary

MeasureTime frame
ANB angle;—

Countries

China

Contacts

Public ContactXinqi Huang

West China Hospital of Stomatology, Sichuan University?

xinqi_huang@163.com+86 139 8001 0541

Outcome results

None listed

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