Clinical practice and medical research show that there are great differences between China people and westerners in terms of skeleton, dental arch and tooth shape. At present, all kinds of straight wire arch correction techniques popular in the world are developed by American and European and American scholars according to the occlusion characteristics of white people and the clinical experience in treating white patients. But in fact, there are many differences in occlusal surface structural characteristics between orientals and Caucasians. If we don't pay attention to the differences in occlusal surface characteristics between orientals and Caucasians, we will choose a straight wire appliance popular in Europe and America for treatment, which will often lead to unsatisfactory final treatment effect and need to be orthodontic again.
In order to make the final result more ideal, it is necessary to adjust the orthodontic method frequently and bend various monson on the arch wire to achieve the ideal occlusion relationship of the orientals. Therefore, it is of great significance to find and study straight wire appliance and orthodontic method suitable for the aesthetic characteristics and orthodontic mechanical characteristics of oriental occlusal surface in our Asian orthodontic clinic. The OPA-K straight wire appliance developed by Tokyo University of Medical Dentistry, the highest institution in Japan, is an appliance developed based on the occlusal data of normal teeth in Japan, which is suitable for the oriental population and the most suitable orthodontic system for Asian teeth at present.
The straight wire arch self-locking orthodontic technique is different from the general orthodontic operation. This technology has an additional device, just like adding a door to the bracket, which can directly lock the orthodontic wire in the groove of the bracket, avoiding the bondage of ligating wire or rubber band to the orthodontic wire, making the orthodontic operation comfortable and efficient.
Compared with traditional brackets, self-locking brackets have many advantages:
1, extending the follow-up interval:
There is no need to tie a knot, and it is fixed with a special spring piece, so the aging strength of the rubber band is not attenuated, and the interval of follow-up visit is extended, so it can be done once every two months;
2, small size, more sanitary:
Self-locking brackets are smaller because there are no attachments such as ligatures. Adults can choose ceramic self-locking brackets with higher aesthetics, which is more conducive to oral cleaning, periodontal tissue health protection and more stable orthodontic effect than traditional orthodontic brackets.
3, bracket locking, higher efficiency:
Traditional brackets need to overcome the friction resistance between steel wire and brackets because of orthodontic treatment of moving teeth. The greater the friction, the greater the correction force, the slower the moving speed and the longer the correction time. However, the degree of freedom of arch wire in self-locking bracket increases, which reduces the friction force, makes patients feel more comfortable and is beneficial to correct tooth movement, so it can shorten the course of treatment and complete orthodontic treatment ahead of schedule.
4, feel comfortable, less adverse reactions:
The straight wire arch self-locking orthodontic technology is to realize the horizontal movement of teeth under soft light water, so that patients are not easy to feel pain and discomfort, so that patients can complete the treatment in a relaxed and happy situation. In addition, the OPA-K straight wire arch self-locking correction technique cancels the traditional bracket ligation and force application, and there are fewer wire changes in the middle. The reaction after applying force is very light, which is far less than the pain reaction of traditional bracket correction.