Effect of head posture on malocclusion: Compensatory curves of neck

Craniocervical system is an integral component of the upper body, basically composed of the head, neck and shoulder girdle. From anatomic and functional aspects, the stomatognathic system and the upper cervical spine are closely interlinked. Together with complex neuromuscular relationships, this gives rise to an important field of cooperation between orthodontics and orthopedics. Any dysfunction, occlusal disorder, postural abnormality or trauma of the upper quarter could likely lead to a problem at adjacent or related components. For that reason, an evaluation of the cervical spine must be carried out. The literature appeals for close interdisciplinary cooperation for patients with syndromes and for those with lordosis, kyphosis and scoliosis. The first step should be aimed at developing closer cooperation in problem-oriented investigations by both disciplines. In patients with underlying orthopedic pathologies such as scoliosis, lordosis and kyphosis, early orthodontic correction of the crossbite observed in most cases should be seen as mandatory. This early intervention with orthodontic appliances seeks to alleviate the orthopedically induced facial asymmetry.