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

(1) To determine whether orthodontic and/or orthopaedic treatment in children with anterior open bite is effective at correcting the anterior open bite.
(2) To determine whether any one treatment is more effective than another.
(3) To determine whether treatment:
(a) reduces or cures snoring or sleep apnoea;
(b) reduces signs and symptoms of masticatory and swallowing dysfunction;
(c) changes other dentofacial characteristics ‐ maxillo‐mandibular width, height, length and dental position.