In maxillofacial congenital defect, such as Cleft Palate with an obscure etiology, has unknown patterns of growth & development. The facial growth can be affected either by a congenital factor or enviromental factor such asinfection & trauma. The surgical repair is the only known enviromental contribution to the subsequent behavior of the structures involved in deformity due to injury of growth center, inappropriate blood supply, scar contracture after surgery.
The prime purpose of this study is to evaluate the possible effect that surgical repair may have on the subsequent growth of the congenitally cleft maxilla-particulary in the anterior-posterior direction, with reference to the state of occlusion of anterior teeth.
Author carried out cephalometry to 64 children of Cleft Palate and velopharyngeal incompetent children following cleft palate surgery who visited St. Mary Hospital in Seoul from June, 1979 to June, 1981.
The results were as follows;
1. There was no significant difference between repaired and unrepaired cleft palate group in all cephalometric measurements.
2. The mean value of SNB(84.4˚±7.03)in repaired Cleft Palate before 4 years old was higher than that (76.68˚±4.03) of repaired Cleft Palate after 4 years old and distance of UI-NB in repaired Cleft Palate before 4 years old was smaller than repaired Cleft Palate after 4 years old.
3. There was a significant sex difference in repaired Cleft Palate. SNB of male was higher than female and lower in distance of UI-NA and LI-NB.
4. There was no significant difference in the type of Cleft Palate except SNA. SNA of complete Cleft Palate was lower than incomplete Cleft Palate.
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