Abstract
A clinico-statistical study was performed on patients with cleft lip and/or palate in the past 26 years at the Department of Oral and Maxillofacial Surgery, Saga Medical School.
The results were as follows:
1. The total number of patients was 502.
2. The patients were 267 males and 235 females, with a male to female ratio of 1.13 : 1.
3. The number of primary cases was 258, and that of secondary cases was 244.
4. Cleft morphology was classified as follows: cleft lip, alveolus and palate in 298 (59.3%), cleft lip and alveolus in 77 (15.3%), cleft lip in 71 (14.1%), and cleft palate in 56 (11.1%).
5. The laterality in cleft lip in 446 cases was unilateral in 357 cases, and bilateral in 89 cases. The left-right ratio of the cleft side in unilateral cleft cases was 1.3 : 1.
6. Most patients (69.4%) were residents of Saga prefecture among primary cases, but patients resident in Fukuoka prefecture accounted for the greatest proportion (65.2%) in secondary cases.
7. The frequency of familial expression was 3.6%.
8. Other congenital anomalies and/or disorders were found to be associated in 113 cases (22.5%), and they were more frequently found in cleft palate patients (41.1%).
9. The total number of surgical operations was 907.
