Prepare the tooth model and transparent retainer, completely repair the tooth model, complete the pit and remove the redundant place. Put the tooth model on the model table, put the retainer piece between the two clips, turn on the power supply, the temperature rises, and the retainer piece begins to melt. When the retainer melts to a certain extent, it is pressed down to wrap the dental mold, and then it is trimmed and polished. Clean the trimmed fixer and soak it in cold water.

Holder:

Retention is a measure to consolidate the curative effect of orthodontic treatment and keep the teeth in an ideal aesthetic and functional position, which is called retention. At this time, it is called a retainer. After orthodontics, after the appliance is taken out, because the teeth are still unstable in the new position, it is often necessary to wear retainers to keep the new position of the teeth on the alveolar bone and wait for the reconstruction of the alveolar bone.