Monday, June 22, 2020

Knowledge: Why should I wear a retainer after orthodontics?

During the growth and development of the maxillofacial surface, due to various reasons, it can cause dental and maxillofacial deformities, such as crowded teeth (unaligned teeth), excessive tooth gap, and misalignment of the upper and lower occlusal relations such as maxillary protrusion and mandibular protrusion (ground Bao Tian) and abnormalities such as the position or size of the upper and lower jaws, orthodontic correction treatment has brought these patients improved function and restored facial appearance. After "long" orthodontic treatment, orthodontic specialists often require patients to wear retainers. After orthodontic correction, there is a possibility of recurrence due to various reasons. This is also a problem that many patients and their parents worry about. After orthodontic treatment arranges the teeth neatly, the orthodontic specialist will make it according to the specific situation of the patient Personalized retainer to maintain good orthodontic effect obtained by orthodontic treatment.

The main reasons for maintenance after completion of orthodontic treatment are:

1. The reconstruction of the bones around the teeth and the reconstruction of the adjacent soft and hard tissues takes a certain amount of time: during the growth and development of the maxillofacial surface, the muscle fiber tissue of the muscular system produces a muscle dynamic balance system that adapts to the deformed shape. After the correction of the deformed shape, the function and power of the dental system are often lagging, so the new dental shape may also be affected by the original dynamic balance system, which is unstable. After orthodontic correction, it may be because of these reasons And cause a relapse.

2. The balance of the new occlusion has not been established: the bite relationship of the teeth after correction is established in the new position of the teeth. If a good bite relationship can be achieved, it is a powerful factor for the stability of the jaw shape. However, the new occlusal state requires long-term habitual adjustment or adaptation of the cusp lock of the tooth or artificial jaw adjustment and grinding in order to achieve a good contact relationship between the cusps of the tooth tip. In the process of self-adjustment, the deformity of the dentition and jaws has a tendency or tendency to recur.

3. Bad oral habits are not broken: During the growth and development of the maxillofacial region, bad oral habits occupy an important position in the cause of the deformity of the maxillofacial region. During the formation of dental and maxillofacial deformities, bad oral habits will cause abnormal muscle dynamic balance system. After orthodontic correction is completed, if the original bad oral habits are not completely corrected or not completely eliminated, it may cause recurrence of dental and maxillofacial deformity.

4. The correction of dental and maxillofacial deformities during growth and development, different individuals have their specific growth trends and periods. If the patient is corrected early in the growth and development of permanent teeth, at the end of the orthodontic correction treatment, the dentition is effectively corrected, but the patient is still in the growth and development period, and the jaws will still grow according to the original The method continues to develop, and the results of this growth and development will continue to cause instability in the correction results, thereby causing the recurrence of dental and maxillofacial deformities.

5. The emergence of the third permanent molar: The last tooth of the upper and lower jaws is called the third molar, also known as the wisdom tooth. If the wisdom tooth erupts forward or is impacted horizontally, it will produce a force that pushes the front tooth forward. This can cause crowding or misalignment of the anterior teeth, leading to recurrence of dental and maxillofacial deformities.

So, how to wear the retainer? After the orthodontic treatment is completed, the orthodontic specialist will take the model of the tooth according to the specific conditions of each patient and develop a personalized maintenance plan, requiring the patient to wear a retainer. In general, the retainer usually needs to be worn for more than 2 years. In the first year, it should be worn during the day and night. It should only be removed during eating, brushing teeth or important social activities. From the second year on, it is only required to sleep every night. It is worn at the time, and in the next 3 to 6 months, it is changed to the next night until the teeth are stable in the new position. During the period when the patient wears the retainer, the orthodontist usually asks the patient to come back every three months or so, and the doctor will make appropriate adjustments or give personalized suggestions according to the specific conditions of each patient. Therefore, it is important to wear proper retainers after the orthodontic treatment is completed.

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