When is the best time for lip banding surgery?

The position of attachment of labial frenum will change with the eruption of baby's deciduous central incisors. If the upper labial frenum is still attached too low after the replacement of maxillary canine when the child is 11~12 years old, it will lead to too large central incisor space. At this time, surgical treatment is recommended, and temporary observation can be performed at present.