CLINICOSTATISTIC OBSERVATIONS ON THE PATIENTS OF CLEFT LIP AND CLEFT PALATE

Abstract

This time, on the basis of the classification proposed by the Nomenclature Committee of American Cleft Palate Rehabilitation 223 cases of cleft lip and cleft palate seen at our clinic during 10 years from July 1960 to June 1970 were all classified morphologically. In addition, other congenital malformations associated with clefts were also observed statistically. 1. Though slight, the annual change showed a yearly increase and corresponded to 1.4 % on the average against the total of our outpatients. 2. On sex difference, males affected were 116 cases and females 107 cases. The ratio between them was 1.08: 1. 3. With regard to the form of cleft, unlike other reports cleft lip was most frequent and found in 101 cases (45.9%), next cleft palate in 68 cases (30.9%) and cleft lip and palate in 51 cases (23.2%). In accord with foreign reports, cleft lip and cleft lip and palate were more frequent in males, while cleft palate in females. 4. Facial cleft was seen in 3 cases. They were all transverse facial cleft (males 2, females 1). 5. In 152 cases of cleft lip and cleft lip and palate, cases of unilateral occurrence was about 4.5 times as many as those of bilateral one, and that, left unilateral occurrence was more frequent. Both complete and incomplete clefts on either right or left side were more frequent in males. 6. Based on the aforesaid classification, morphological classification was made in details : a) Cleft of lip was found in 30 of 220 cases in all (13.6%). Incomplete unilateral cleft of lip was 14 times as many as incomplete bilateral one . They were both more abundant in males and there was little difference between the right and left sides. b) Cleft of lip and alveolar process was confirmed in 71 cases (32.2 %). It was more frequent in males and very often left unilateral. c) Cleft palate was found in 68 cases (30.9%) and occurred about 2 times more frequently in females. Morphologically, cleft soft palate was most frequent, amounting to 60.3% of the whole, next cleft soft and hard palate, and cleft uvula in order. d) Clefts of prepalate and palate were found in 51 cases (22.3%) and they were about 1.6 times more frequent in males. Cleft palate with unilateral cleft prepalate was found in 32 cases, about 1.6 times more frequent