The views of the effects of cervical headgear (HG) are to some extent obscure, at least when the long-term effects are concerned. Most reports that are based on a short-term follow-up, describe a restricted maxillary anterior growth. During the later growth, it is not clear what is the general association of early orthodontic treatment on crowding, but our earlier results show that in the final outcome there is no significant difference in stability of the treatment if crowding is treated with early headgear or later with fixed appliances only, at least when the long-term effects of the treatment are concerned (Krusinkiene et al., 2008).