Abstract
We carried out the clinicostastic study of patients who were first operated in the first Department of Oral Surgery, Faculty of Dentistry, Tokyo Medical and Dental University during a 3 year period from Oct.1st 1977 to Sep.30th 1980.
We exam ined 246 patients in terms of the following factors: distribution of cleft type, sex ratio, right-left differences, frequency in parents, siblings and other relatives and its associated anomalies. Further, comparing with the previous reports (1958 Kobayashi,1964 Ohashi), the characteristic was an increase of cleft palate patients (37.0%) and a decrease of cleft lip alveolus and palate patients (37.4%). In cleft lip patients and cleft lip and alveolus patients, the sex ratio has changed. With regard to the reason, the change in the number of patients that come to our hospital, and that of environmental factors of the person and so on, are considered. But in the future, it requires further examinations.
Associated anomalies of 53 cases were interviewed. Cleft palate was predominant. Cleft lip, cleft lip and alveolus, cleft lip, alveolus, and palate followed equally. Ankylo-glossia, abnormality of costae, mental retardation were comparatively and highly observed. We distinguised all cleft patients from familial occurrences and non-familial occurrences. The former cases had a high probability of associated anomalies.
Frequently, the patients with cleft palate had accompanying ankylo-glossia. Considering post -operative speech therapy, it is an important problem. Abnormality of costae were 11 cases (4.5%) and is predominant in females. Cost. X II defect were 10 cases, Cost. X III was only one case. Acompanying mental retardation was more frequent in cleft palate and cleft lip and palate. It is suggestive that, in several cases, speech retardation has an effect on the speech of cleft patients.
