When is the best time to start straightening your teeth? Many parents believe that orthodontics can only be done after the teeth have been replaced, which is a one-sided view. Different malocclusions have different orthodontic timing, so it should be determined according to the specifics of the malocclusion, and cannot be accomplished uniformly after the teeth have been replaced. Generally speaking, patients with simple malocclusion and minor facial bone deformity should start orthodontic treatment after teeth replacement, generally 11-14 years old for boys and 10-13 years old for girls, at this time, the body is in the period of rapid pubertal development, the degree and complexity of malocclusion has been fully realized, which is conducive to the doctor’s diagnosis and orthodontic design; at the same time, this stage of rapid growth, a good response to orthodontic treatment, which is easier to achieve good results. At the same time, this stage of rapid growth, good response to orthodontic treatment, it is easier to achieve good treatment results. However, for some cases that may develop into serious facial bone deformities, early treatment should be provided. For example, bony anticuspension, mandibular retraction, and various bad oral habits should be treated as soon as possible after discovery. Will orthodontic treatment cause loose teeth? Under normal circumstances, teeth have a certain degree of mobility so that they can cushion the pressure of chewing and prevent trauma to the teeth and periodontium. During orthodontic treatment, it is the process of continuous resorption and reconstruction of the alveolar bone. Some patients may experience mild loosening of teeth, acidity and discomfort, and weakness in chewing, which are all normal reactions during the treatment process. When the patient puts on the orthodontic appliances, he/she should strictly follow the doctor’s instructions, during the orthodontic treatment, he/she can’t eat too hard and sticky food; during the orthodontic treatment, he/she must insist on brushing his/her teeth carefully in the morning, evening and after meals; the patient must follow up the consultation on time, so that it won’t cause any damage to the periodontal tissues of the dentition. After the end of orthodontic treatment, these phenomena will disappear and the teeth will return to normal. Why do some people need to have their teeth extracted for orthodontic treatment? In the correction of malocclusion, the main purpose of tooth extraction is to: 1. Uncrowd and align the teeth. 2.Inwardly retract the front teeth to improve the face shape of the overbite. 3.Harmonize the upper and lower dental arches. From the current statistics, about 65% of orthodontic patients need to be extracted for orthodontic treatment. Whether you need to be extracted, how many teeth to be extracted, and which teeth to be extracted will be decided by the doctor based on a comprehensive analysis of the results of clinical examinations, model measurements, and cephalometric measurements. After orthodontic extraction treatment, will the rest of the teeth fall out prematurely? Some people think that orthodontically treated teeth will fall out prematurely due to force and movement, and thus refuse orthodontic treatment. In fact, teeth are firmly grown on the alveolar bone and grow throughout life, and even after adulthood the jawbone undergoes continuous renewal and remodeling, which is an important physiological characteristic of the jawbone. During orthodontic treatment, when the teeth are moved by appropriate biological forces, the alveolar bone in the direction of the force is resorbed, allowing the teeth to move in that direction; at the same time, new alveolar bone is formed in the opposite direction of the tooth root, allowing the teeth to gradually grow in a new position, which is the biological basis of orthodontic treatment. Therefore, there is no scientific basis for the claim that teeth will fall out earlier after orthodontic treatment. Is it true that the “pocket teeth” of the baby teeth will be replaced by normal teeth when the teeth are replaced and therefore do not need to be treated? Anterior anticuspension is a relatively common malocclusion, which is characterized by the lower front teeth wrapping around the outer side of the upper front teeth, and is also known as “pericuspension” and “pocket teeth”. The main causes of malocclusion are odontogenic, functional and skeletal. Odontogenic and functional anterior ankylosis is usually mild and the facial deformity is not obvious. Skeletal factors refer to the growth of the mandible to the front, or the lack of development of the maxilla, the development of the upper and lower jaws are not adjusted to the anterior teeth anticuspension, and some patients with bony anterior teeth anticuspension have a genetic predisposition. Anterior anteflexion in children during the growth period has a greater impact on the development of the child’s jaws. During mandibular movement due to occlusal force may stimulate the overdevelopment of the mandible, while at the same time the development of the maxilla is restricted, which enlarges the incongruity between the upper and lower jaws even more, and evolves into osseous anteflexion gradually. In order to avoid children with anterior ankylosis in the anagenital period from evolving into osseous anterior ankylosis due to untimely treatment, its treatment should be as early as possible, and in general, children in the period of milk teeth can be corrected at the age of 4-5 years old, and most of them can be corrected by wearing simple movable orthodontic appliances. Some patients with osseous factors may need to be treated in stages during the growth period to be corrected eventually, but some severe osseous anterior ankylosis (about 10-15% of the total number of osseous ankylosis) may need to be corrected by combined orthodontic-orthognathic surgery in adults.