In the early weeks of development, long before a child is born, the right and left sides of the lip and the roof of the mouth normally grow together. Occasionally, however, in about one of every 800 babies, those sections don't quite meet. A child born with a separation in the upper lip is said to have a cleft lip. A similar birth defect in the roof of the mouth, or palate, is called a cleft palate. Since the lip and the palate develop separately, it is possible for a child
A cleft lip can range in severity from a slight notch in the red part of the upper lip to a complete separation of the lip extending into the nose. Clefts can occur on one or both sides of the upper lip. Surgery is generally done when the child is about 10 weeks old.
To repair a cleft lip, the surgeon will make an incision on either side of the cleft from the mouth into the nostril. He or she will then turn the dark pink outer portion of the cleft down and pull the muscle and the skin of the lip together to close the separation. Muscle function and the normal "cupid's bow" shape of the mouth are restored. The nostril deformity often associated with cleft lip may also be improved at the time of lip repair or in a later surgery
