Abstract
We studied 150 consecutive patients with cleft lip and palate who presented at the outpatient clinic of the oral surgery department of a university hospital during the past 10 years to analyze recent trends. The results were as follows:
1) The 150 patients consisted of 134 primary cases and 16 secondary cases. The number of the patients decreased gradually over the course of time.
2) The total incidence of cleft lip and/or palate was 134/105,636, estimated to account for 69.7% of all cases in Miyazaki Prefecture.
3) There were 51 cases of cleft lip with cleft palate, 35 of cleft lip, and 45 of cleft palate. There were 29, 11, and 11 cases of left, right, and bilateral cleft lip with cleft palate and 21, 13, and 1 case of left, right, and bilateral cleft lip, respectively.
4) The male:female ratio was 1.6:1 for cleft lip with or without cleft palate, as compared to 1:2 for cleft palate.
