The effectiveness of non-surgical orthodontic treatment for the treatment of severe class II growth anomalies

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN61138858

Enrollment

480

Registered

2000-10-17

Start date

1997-04-01

Completion date

Unknown

Last updated

2015-01-13

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

Conditions

Dental Oral Health Dental

Interventions

Early treatment with a Twin Block appliance and no treatment. Later treatment with a Herbst appliance or a Twin Block. This trial was continued by ISRCTN26364810 - grant G9901331.

Eligibility

Inclusion criteria

Inclusion criteria: Children with an overjet of greater than 7 mm

Exclusion criteria

Exclusion criteria: Craniofacial syndrome

Design outcomes

Primary

Measure	Time frame
Dental and skeletal change, self esteem and patient preference	—

Secondary

Measure	Time frame
Not provided at time of registration	—

Countries

United Kingdom

Outcome results

None listed

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