First, deciduous teeth (occlusion) period: deciduous teeth with irregular arrangement or malocclusion (occlusion) should be corrected as soon as possible. The treatment age is about 3 ~ 6 years old. At this time, the child's permanent teeth have not erupted, and the roots of deciduous teeth have not been absorbed and are relatively stable. It can be corrected by wearing an oral appliance. If it is not corrected in time, it may aggravate the deformity in this rapid growth period.
Second, the period of mixed teeth (addition of teeth): about 7 ~ 1 1 year. At this time, new permanent teeth began to erupt, teeth grew rapidly, and occlusion was unstable, which was the frequent period of tooth deformity. The main reason is that deciduous teeth fall off prematurely, which leads to the reduction of dental arch length, which in turn leads to the inability to arrange teeth. Such children should be regarded as gap holders. The deciduous teeth fall off prematurely and close the gap, which leads to insufficient eruption space of permanent teeth and tooth deformity. The gap should be repaired with orthodontic appliances. Tooth deformities caused by bad oral habits or hobbies can be corrected by using movable or fixed appliances or even adding plastic force according to different situations.
Third, the permanent tooth (tooth combination) stage: all the deciduous teeth have been replaced, and the second big tooth and the third big tooth have erupted into another rapid growth stage, generally around 12 ~ 18 years old. At this time, the diagnosis of tooth deformity is relatively clear, and the correction is relatively fast and stable in this rapid growth period.
Can you correct it if you miss the best period of orthodontics? Gao Xiaohui, chief physician of pediatrics department of Beijing Stomatological Hospital, suggested that adult orthodontics should be carried out after 18 years old, so as to establish a good occlusal relationship and relieve tooth crowding and disorder, thus preventing or treating periodontal disease and dental caries. At this time, orthodontics can adjust the axial direction of teeth to facilitate implantation or restoration, restore the functions of chewing, language and temporomandibular joint, and improve facial beauty. For severe deformity, orthognathic surgery can be performed, and the effect is very obvious. Therefore, it is not absolute to determine the best time for orthodontics, and doctors will decide according to different types of tooth deformities and individual growth and development. But for many patients with facial deformities caused by teeth, timely treatment can get twice the result with half the effort.
Dr. Gao Xiaohui suggested that quite a few patients need to have their teeth extracted when their teeth and jaws are deformed. The purpose of tooth extraction is to relieve crowding and arrange dentition; Retract the front teeth to improve the facial morphology of protrusion; Coordinate the upper and lower dental arches. The common dentofacial deformities are irregular teeth and protruding teeth, which often need tooth extraction for correction. As for whether to pull out teeth, how many teeth and which teeth to pull out, doctors need to decide according to clinical examination, X-ray examination and model analysis. In order to ensure the vertical coordination and left-right symmetry of teeth, the most common way to extract teeth is to extract four bicuspids (one on the top, one on the bottom, one on the left and one on the right). After pulling out four bicuspids, the function and health of teeth will not be affected.