Oral Health: Orthodontics Oral Health Orthodontics
Conditions
Interventions
Random allocation of two alternative designs of twin block appliance, one with a Southend clasp on the upper central incisors and one without. The appliances are identical in all other aspects.
Sponsors
Record provided by the NHS Trusts Clinical Trials Register - Department of Health (UK)
Eligibility
Inclusion criteria
Inclusion criteria: 1. Patients aged 11-15 years 2. Added May 2008: with Class II division 1 malocclusion suitable for functional appliance therapy. The overjet had to be greater than 6mm and ANB angle greater than 4°.
Exclusion criteria
Exclusion criteria: Added May 2008: Patients with congenital syndromes, obvious asymmetry and prior appliance therapy were excluded.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Added May 2008: Angulation of the long axis of the upper incisor to the maxillary plane, as measured from a lateral cephalometric radiograph. | — |
Secondary
| Measure | Time frame |
|---|---|
| Added May 2008: 1. Angulation of the long axis of the lower incisor to the mandibular plane 2. Skeletal relationship as measured by angle ANB | — |
Countries
United Kingdom
Outcome results
None listed