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正畸腭扩展可分为机械力扩展和磁力腭扩展。机械力扩展又分为快速腭扩展和慢速腭扩展,快速腭扩展能达到最大限度的骨性改变,但因为力量大,作用迅速可导致牙根的吸收,扩弓后容易复发;慢速腭扩展更接近牙的生理性移动,力量轻微,作用缓慢,但其牙效应明显大于骨效应;磁力腭扩展以钕铁硼作为载体,可有效控制磁力大小,兼具了快速、慢速腭扩展的优点,并通过磁场的作用促进组织的改建,是一种有潜力的腭扩展方法。
Orthodontic palatal expansion can be divided into mechanical expansion and magnetic palate expansion. Mechanical expansion is divided into rapid palatal expansion and slow palatal expansion, rapid palatal expansion can achieve the maximum bone changes, but because of the strength, rapid action can lead to root resorption, easy to relapse after expansion; slow palate expansion More close to the physiological movement of the teeth, the power of slight, slow, but its tooth effect is significantly greater than the bone effect; magnetic palate expansion to NdFeB as a carrier, can effectively control the size of the magnetic, both fast and slow palate expansion advantages , And through the role of magnetic field to promote tissue remodeling, is a potential method of palatal expansion.