Some children who are born with both a cleft lip and a cleft palate also have a problem with the alveolar (al-vee-OLE-ar) bone, which makes up the gum ridge or front portion of the roof of the mouth. The alveolar bone is a thin layer of bone that forms the sockets around the roots of the upper teeth under the gum tissue.
When there is a cleft in the alveolar bone, it means there is a fistula (FIST-yoo-la) or hole from the mouth to the nose. This cleft in the bone and gums prevents teeth from growing properly and the floor of the nose from developing normally. Fixing the cleft to allow for proper tooth development is important to a child’s health because missing teeth can have a negative effect on eating, digestion, facial growth and appearance. In addition, a child’s smile is an important part of his or her personality, and missing or poorly aligned teeth can have a huge negative impact on a child’s self-esteem.
The alveolar bone graft repairs the hole in the gum ridge and stabilizes the bone arch, providing better support for the base of the nose and new bone for the roots of the developing teeth to grow into. The surgery usually is done when the child’s permanent canine teeth are three-quarters formed.
To do the bone graft, a piece of bone usually will be taken from your child’s iliac (ILL-ee-ack) crest, the upper ridge of the hip bone. The doctor will make a 1- to 3-inch incision (in-SIZZ-yun) or cut in the skin just over the hip bone and in the bone itself to remove the inner portion of the bone. This part of the bone, called cancellous (CAN-sell-us) bone, is soft and pasty and can be shaped to form the patch that will close the hole in the alveolar bone. Gum tissue inside your child’s mouth then will be closed around the bone and sutures (SOO-chers) or stitches will hold the tissue in place as it heals.