1. Does orthodontics require tooth extraction?
Whether orthodontic tooth extraction is needed depends on the condition of one's own teeth.
The main purpose of tooth extraction is to relieve crowding and provide enough space for dentition, because crowding is the most common malocclusion symptom, accounting for about 70% of malocclusion. Generally speaking, mild crowding (crowding degree is about 2-4mm) can be achieved by increasing the length or width of dental arch without tooth extraction. Moderate crowdedness (crowdedness is about 5-9mm) should be relieved by tooth extraction in most cases. However, severe crowding (the crowding degree is above 10mm) usually requires orthodontic tooth extraction to make the correction successful.
2. What kind of people need tooth extraction?
1, patients with crowded dentition. The teeth of such patients are deformed because the number of teeth does not match the number of bones. Therefore, a certain number of teeth must be extracted during orthodontics to coordinate the relationship between the number of teeth and the number of bones, relieve the crowding of dentition and reduce the recurrence of deformity.
2. Patients with prominent faces. This kind of patients need to pull out a certain number of teeth to get a gap, to achieve the purpose of retracting the front teeth and moving the back teeth, to alleviate facial protrusion, so as to make the patient's facial profile more beautiful.
3. Patients who need to correct the occlusal relationship. Because of the asymmetry of upper and lower teeth, this kind of patients need to extract teeth to adjust the occlusal relationship.
3. The harm of orthodontic tooth extraction
Effect of 1 on dental pulp
In the initial stage of orthodontic treatment, there is a mild and temporary inflammatory reaction in the dental pulp, which shows that the patient has pain or discomfort in the first few days after exertion, but the experiment proves that the harm of orthodontic treatment has no clinical significance. Through the above introduction to the harm of orthodontics, people can be helped to establish a correct understanding of orthodontic methods. At the same time, the harm of orthodontics also tells people to choose a regular hospital for orthodontic treatment, so as to ensure the effect.
2. Influence on roots
This is a common harm in orthodontics, because the root surface is also undergoing absorption, proliferation and other reconstruction activities during orthodontics. After treatment, the root will return to normal by its own repair ability, but if the treatment force is too large, it will increase the risk of root absorption.
3, the teeth become loose
This situation is also a typical harm of orthodontics. The dentist said: Because under normal circumstances, in order to buffer the chewing pressure and prevent tooth injury, every tooth has a certain physiological activity ability. During orthodontic treatment, tooth mobility increases, which is a normal reaction. Moving teeth needs to rebuild alveolar bone and periodontal ligament, because teeth are fixed in alveolar bone through periodontal ligament, so teeth will become loose. However, after the teeth are corrected to the normal position and stop moving, the teeth can reattach the periodontal ligament through their own repair ability, and become stable without causing permanent damage.
4. How long does it take for orthodontics?
Because the growth and development of adults have been basically completed, the maxillofacial suture has become bony fusion, with low plasticity, slow metabolism and reduced biological reactivity of adults. Therefore, the alveolar bone remodeling is slow, and the tooth movement is also slow, which requires a long treatment time. Therefore, adult orthodontics should be done step by step. If we insist on shortening the time, it will bring bad consequences.
Children's orthodontics generally takes about one year, and adults' orthodontics generally takes about two years.