Area lock

This function is used to lock the scanned area and avoid the influence of subsequent object changes on the scanning accuracy.

For example, in the tooth preparation area, the cervical margin line is easily affected by the gum and blood, so the cervical margin line can be temporarily exposed with the gingival retraction line, and the blood can be removed, and the cervical margin data can be obtained by scanning in time. After the scanning of the area is completed, the area is locked to prevent the subsequent data from covering the neck margin information.