1.Why are teeth not straight? There are many reasons, mainly including genetic factors and environmental factors. Environmental factors include congenital and acquired factors. Congenital factors refer to the various influences on the fetus during its growth and development in the mother’s womb, which may be nutritional metabolic disorders of the mother or fetus, rubella or viral infections of the mother, traumatic injuries of the mother during pregnancy or birth injuries caused during labor and delivery. Acquired factors are influences that occur after birth during growth and development. (1) Diseases: certain acute infectious diseases, certain chronic wasting diseases may affect the development of teeth and jaws. Endocrine dysfunction or malnutrition especially vitamin deficiency may affect the development of teeth and jaws. (2) Abnormal respiratory and swallowing functions may affect the development of teeth and jaws. (3) Bad habits such as finger biting, upper or lower lip biting habits, tongue sticking or tongue spitting habits. (4) Problems that occur during the period of milk teeth or replacement teeth. Including premature loss of milk teeth, milk teeth late, premature loss of permanent teeth, permanent teeth eruption order disorders (these two are the main reasons), and so on will cause uneven teeth. 2, uneven teeth have any harm? First: affect the facial appearance of the second: teeth are not aligned easily lead to brush brush not clean, so easy to grow caries and tartar, affecting the teeth and periodontal health. Third: because the upper and lower bite relationship is not good, it will affect eating, chewing function decline, aggravate the burden of gastrointestinal, thus affecting physical health. Fourth: Sometimes it also affects pronunciation. Fifth: Some children and teenagers are ridiculed by their classmates or peers because of their poor teeth, which makes them have low self-esteem and affects their mental health. So you see that uneven teeth have so many hazards, I hope that all children’s parents can pay attention to the child’s teeth, regular checkups, to give the child a set of neat, beautiful, healthy teeth, but also gives the child confidence. 3, uneven teeth have any way to treat? Teeth are not straight can be corrected. Many people think that the teeth look like that, is given by parents, can not change it. Times have developed, this old concept should be changed. Orthodontics is a discipline called orthodontics. It has more than 100 years of history. 4, only teenagers can straighten teeth? Can adults do orthodontics? Like teenagers and children, adults can also do orthodontics. So believe in science, you also have the right to pursue beauty. 5.Do children need orthodontic treatment when they are changing teeth? Children do not need orthodontic treatment during the period of tooth replacement, except for the following cases. (1) serious maxillary or mandibular skeletal deformities, such as excessive protrusion of the front teeth, lips protruding pocket teeth (2) bad habits seriously affect the development of teeth and jaws. Such as the habit of biting the lower lip, the habit of eating fingers, the habit of mouth breathing, the habit of tongue spitting. (3) Serious misalignment of individual teeth, such as twisted teeth; individual teeth anti-collision (upper teeth bite inside the lower teeth). There are also some temporary misalignments during tooth replacement, these include: mild crowding, gaps between incisors, and deep bites. Parents should not be concerned when they see these conditions. With the gradual growth of the child, these misalignments will gradually disappear or ease, so there is no need for orthodontic treatment. 6.When is the best time for orthodontic treatment? Generally speaking, it is best for girls to have orthodontic treatment at the age of 10-12 years old and boys at the age of 11-13 years old. At this time, the milk teeth have just been replaced. However, for children with bone deformities, especially children with “pocket teeth”, doctors recommend that early orthodontic treatment should be carried out during the period of tooth replacement. Early orthodontic treatment can help to take advantage of the child’s growth spurt to stop the abnormal growth trend and direct it to normal. 7.What are the methods of orthodontic treatment? Active orthodontic appliances: generally used for the correction of simple errors and malformations during the period of milk teeth and replacement teeth, or with fixed orthodontic appliances. The patient can take off and wear it by himself. Fixed orthodontic appliance: the most commonly used orthodontic appliance. The patient cannot remove it by himself/herself. Functional Coupe: It is mainly used for children who are in the peak growth and development period during the period of tooth replacement or just after the tooth replacement, and the functional orthodontic appliance can be used to correct the bony errors and deformities. Orthognathic surgery: serious dental and maxillofacial deformities, such as maxillary protrusion, maxillary retraction, mandibular protrusion, mandibular retrusion, simple orthodontics can not be solved, it is necessary to pass the surgery and orthodontic joint orthodontic methods. 8.How long does it take to straighten teeth? Generally orthodontic treatment takes about one and a half to two years. Generally children are faster than adults, and extraction treatment takes longer than non-extraction treatment. Complex errors and malformations take longer to treat than simple errors and malformations. Skeletal malformations take longer to correct than simple dental malformations. Everyone’s situation is different and should be analyzed on a case-by-case basis, as well as on the treatment time. After the completion of orthodontic treatment, generally need to wear a retainer for about one and a half years. 9.Will orthodontic treatment cause loose teeth? Will I lose my teeth when I get old? Orthodontics, the teeth will be slightly loose in the process of movement, but after the completion of orthodontics after a period of time to maintain the teeth around the alveolar bone after remodeling, the teeth will become stable again and before the same. So there is no need to worry about whether the teeth will fall out in the old age. 10.Why do I need to have my teeth extracted for orthodontic treatment? About 50% of orthodontic patients need to have their teeth extracted. The purpose of tooth extraction is: (1) to utilize the extraction space to align the crowded teeth. Patients with II-III degrees of crowding are more likely to have extractions. (2) Utilizing the extraction space to retract the front teeth, improve the protrusion of the dental arch, and improve the shape of the face. For example, if some people have protruding lips, the protrusion of the lips will become smaller after extraction and the face will become more beautiful. (3) Use the extraction gap to adjust the occlusal relationship of the back teeth, making the back teeth cusp and fossa staggered, occlusal contact area is the largest, to achieve the best chewing efficiency. 11.Will it be painful to straighten teeth? Generally speaking, in the 3-6 days after putting on the fixed orthodontic appliances and each follow-up consultation, you will feel some pain and weakness in chewing, and you can eat softer food in these days. Generally, the pain will gradually decrease until it disappears. 12.What examination is needed for orthodontic treatment? Orthodontic generally need to do the following checks: (1) bite marks: (i.e., take the model) for the doctor to diagnose and design the error and the situation, and in the future treatment process for comparison checks. (2) Photographs: Before treatment, the doctor will routinely take photos of the patient’s face and dentition for later comparison with the end of treatment. (3) X-rays: Lateral cephalometric films and whole-mouth surface tomograms are routinely taken for each patient. (4) Treatment planning: Based on the model, photographs and X-rays, the doctor measures, calculates and diagnoses the type of malocclusion and formulates a detailed treatment plan. Then the doctor explains the treatment plan to the patient and his/her family and seeks their opinions. After the treatment plan is finalized, the patient or the patient’s family signs the consent form. (5) Specific treatment process. (6) Remove the orthodontic appliances at the end of treatment, wear a retainer. 13.Can misalignment of teeth with periodontal disease be corrected? Many patients with periodontal disease often find that their teeth are slowly misaligned, the gap between the front teeth also appeared, and is getting bigger and bigger, seriously affecting the facial aesthetics, many patients feel distressed about this. In fact, this situation can be solved by orthodontic solutions. After systematic periodontal treatment, periodontal inflammation has been controlled, the patient himself mastered the maintenance of oral hygiene methods, you can wear a fixed orthodontic appliances for treatment. General periodontal disease of the teeth after orthodontic treatment, need to be in the teeth of the lingual side of the fixed wire to keep the teeth position permanently, but also play a role in maintaining periodontal health. 14.Why do I need to wear a retainer after orthodontic treatment? After the completion of orthodontic removal of aligners, teeth become neat and beautiful, but this is only half of the long march, the next must wear retainers. Because the teeth are not yet stable in their new positions, they must be kept in their new positions with the help of retainers and wait for the bone to rebuild, usually for one and a half years. There are two types of retainers: removable and fixed. Fixed retainers, also known as permanent retainers, are commonly used for adult patients.