1, occlusal adjustment and bite method of deciduous teeth: It is suitable for anterior crossbite caused by insufficient abrasion of deciduous teeth or individual occlusion interference, and usually the anterior crossbite will correct itself after occlusion interference is eliminated.

2. Get rid of bad habits: The common bad oral habits that cause deciduous teeth are stretching the lower jaw and biting the upper lip.

3, mandibular crown inclined guide plate: patients with deep recurrent occlusion of deciduous teeth can use mandibular crown inclined guide plate appliance.

4. Maxillary tongue spring movable appliance: it is to move the upper anterior teeth or individual teeth with tongue inclination, relieve occlusal interference and relieve anterior crossbite. Be sure to wear it when eating.

5. Local fixed appliance: malocclusion of individual anterior teeth may lead to occlusal trauma in the early stage of tooth replacement. Local fixed appliance can be used to tilt the front teeth with lips and move the lower front teeth with tongue to eliminate occlusal interference and relieve the malocclusion of the front teeth.

6. Maxillary anterior traction device: suitable for children with maxillary hypoplasia before the peak of growth and development.