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

ISRCTN ISRCTN61138858
DOI https://doi.org/10.1186/ISRCTN61138858
Secondary identifying numbers G9410454
Submission date
17/10/2000
Registration date
17/10/2000
Last edited
17/07/2012
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Oral Health
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Not provided at time of registration

Contact information

Professor Kevin O'Brien
Scientific

Department of Dental Medicine and Surgery
University Dental Hospital of Manchester
Higher Cambridge Street
Manchester
M15 6FH
United Kingdom

Study information

Study designRandomised controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Not specified
Study typeNot Specified
Scientific title
Study objectivesTo evaluate the effectiveness of different methods of orthodontic growth modification for the treatment of mandibular deficiency. The methods that are being compared are: (1) Early treatment with a Twin Block appliance and no treatment (2) Later treatment with a Herbst appliance or a Twin Block.

This trial was continued by ISRCTN26364810 - grant G9901331.
Ethics approval(s)Not provided at time of registration
Health condition(s) or problem(s) studiedDental
InterventionEarly 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.
Intervention typeOther
Primary outcome measureDental and skeletal change, self esteem and patient preference
Secondary outcome measuresNot provided at time of registration
Overall study start date01/04/1997
Completion date01/04/2001

Eligibility

Participant type(s)Patient
Age groupChild
SexNot Specified
Target number of participants480 Added 20/08/09: 2 years follow-up
Key inclusion criteriaChildren with an overjet of greater than 7 mm
Key exclusion criteriaCraniofacial syndrome
Date of first enrolment01/04/1997
Date of final enrolment01/04/2001

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

Department of Dental Medicine and Surgery
Manchester
M15 6FH
United Kingdom

Sponsor information

Medical Research Council (MRC) (UK)
Research council

20 Park Crescent
London
W1B 1AL
United Kingdom

Phone +44 (0)20 7636 5422
Email clinical.trial@headoffice.mrc.ac.uk
Website http://www.mrc.ac.uk

Funders

Funder type

Research council

Medical Research Council (MRC) (UK)
Government organisation / National government
Alternative name(s)
Medical Research Council (United Kingdom), UK Medical Research Council, MRC
Location
United Kingdom

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan