This study was carried out to provide the important fundamental data in congenital cleft lip and palate. With the data from 118 patients who had been admitted Busan National University Hospital and operated from July 1982 to 1983, the epidemiological characteristics and probable influencing factors in development of this problem were studies and analyzed statistically.
1. The ratio of cleft lip: cleft palate lip & palate was 1.0 : 1.2 : 1.7. There was no sexual difference in cleft palate, but cleft lip and cleft lip and palate were more common in male.
2. The ratio of left side: right side: bilateral type was 2.2 : 1.6 : 1.0.
3. According to the severity, the ratio of comlete type: incomplete type was 1.0 : 1.5 in cleft lip, 9.2 : 1.0 in cleft lip and palate, and 92.7% was incomplete type in cleft palate.
4. There was no statistical significance with seasen of birth, parent’s age at birth, birth order and birth weight.
5. The rate of positive prenatal history during the first trimester of pregnancy was 29.7% of total patients. Upper respiratory tract infection was one of the most frequent history in several types of disease and herb drug and oral pill were most frequent histories in several types of medication.
6. Although the rate of positive family history was 18.6%, there was no significant difference according to the types.
7. The rate that associated with other 13 kinds of congenital anomaly was 25.4%, and tongue tie was one of the most frequent type with the rate of 9.3%.
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