What is the cause before crossbite?

First. Rickets patients, calcium and phosphorus metabolism disorders and abnormal muscle craniofacial power can often lead to more serious jaw protrusion or anterior open deformities. Endocrine disorders, such as the anterior pituitary hyperactivity, can cause mandibular prognathism. Stimulate mandibular advancement due to chronic inflammation of the palatine tonsil or tongue tonsil, over time, can lead to anterior crossbite and mandibular prognathism. Cleft lip and palate patients often appear maxillary hypoplasia, could easily lead to anterior teeth and nearly wrong jaw protrusion relative performance.

Second. Hereditary front teeth before the merger jaw wear sudden, family background, and the mandible and facial deformities abnormalities significantly.

Third. Bad posture lactation, such as inappropriate hanging bottle feeding, the lower jaw to be forward sucking can cause anterior teeth. Bite the upper lip or dental instruments mandibular advancement bad habits that can lead to anterior crossbite and mandibular prognathism.

Fourth. Dentition of the local obstacles. Rujian tooth wear above the arch plane to avoid, the the early contact the jaw Rujian teeth are, the front of the lower jaw will move side to form a pseudo-cross-reactive with anterior crossbite or front teeth jaw prognathism. On permanent incisors congenitally missing, common maxillary lateral incisor congenital absence can cause lack of the Maxillary front development, the formation of the anterior teeth. Can cause individual anterior crossbite or What factors influence fixed denture retention? (III) most of the former crossbite deciduous teeth or early loss. On primary molars early loss of permanent incisors backward, before the formation of crossbite.