This is a protocol for a Cochrane Review (Intervention). The objectives are as follows:

To evaluate the effects of additional aids to dental cleaning in patients undergoing fixed orthodontic treatment, compared with toothbrushing alone, for the prevention and control of:

1. dental plaque;

2. periodontal diseases (gingivitis and periodontitis);

3. white spot lesions (demineralisation); and

4. dental caries.