Cleft lip and cleft palate are birth abnormalities of the mouth and lip. These abnormalities affect about one in every 700 births and are more common among Asians and certain groups of American Indians than among Caucasians. They occur less frequently among African-Americans.
Cleft lip and cleft palate occur early in pregnancy when the sides of the lip and the roof of the mouth do not fuse together as they should. A child can have cleft lip, cleft palate, or both. Cleft lip and cleft palate together are more common in boys. It is also important to know that most babies born with a cleft are otherwise healthy with no other birth abnormalities.
Cleft palate occurs when the roof of the mouth does not completely close, leaving an opening that can extend into the nasal cavity. The cleft may involve either side of the palate. It can extend from the front of the mouth (hard palate) to the throat (soft palate). Often the cleft will also include the lip. Cleft palate is not as noticeable as cleft lip because it is inside the mouth. It may be the only abnormality in the child, or it may be associated with cleft lip or other syndromes. In many cases, other family members have also had a cleft palate at birth.
Cleft lip is an abnormality in which the lip does not completely form during fetal development. The degree of the cleft lip can vary greatly, from mild (notching of the lip) to severe (large opening from the lip up through the nose). As a parent, it may be stressful to adjust to the obvious abnormality of the face, as it can be very noticeable. There are different names given to the cleft lip according to its location and how much of the lip is involved. A cleft on one side of the lip that does not extend into the nose is called unilateral incomplete. A cleft on one side of the lip that extends into the nose is called unilateral complete. A cleft that involves both sides of the lip and extends into and involves the nose is called bilateral complete.
Cleft lip and cleft palate may occur together in an infant, or separately. The degree of the abnormality of both cleft lip and cleft palate can vary greatly. The most common early problem associated with these abnormalities is feeding your baby.