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儿童发育期、如果前牙反(牙合)可引起上颌骨发育不足,这是由于下牙弓妨碍了上牙弓向前发育,同时上颌骨向前发育推动下颌骨更向前发育,使畸形日趋严重,因此前牙反(牙合)早期矫治具有重要意义。据北京医科大学普查前牙反(牙合)发病率为8.69％,临床上通常用上(牙合)垫加舌簧矫治器,下前牙塑料联冠斜面导板等方法矫治前牙反(牙合),因具体适应征不同,本文主要对导弓式功能机械混合性矫治器矫治乳前牙反(牙合)及恒前牙早期反(牙合)进行探讨。
Childhood development, if the anterior crossbite (occlusal) can cause maxillary hypoplasia, which is due to the lower dental arch obstructs the development of the upper arch, while the forward development of the maxilla to promote more forward development of the mandible, the deformity Increasingly serious, so the anterior teeth (OCD) early correction is of great significance. According to the Beijing Medical University census anterior teeth (occlusal) incidence of 8.69%, clinically usually used on the (occlusal) pad plus reed appliance, the lower anterior teeth plastic crown bevel guide plate and other methods to treat anterior teeth ), Due to the different adaptability, the main purpose of this paper is to investigate the effect of guiding bow-type mechanical mixed appliance on the treatment of anterior crossbite and anterior crossbite of anterior deciduous teeth.