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J Dent Res 22(6): 495-497, 1943
© 1943 International and American Associations for Dental Research
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FREQUENCY OF OCCURRENCE OF CLEFT PALATES AND HARELIPS

LINWOOD G. GRACE D.D.S.1

1 Dental Division, Department of Health, Commonwealth of Pennsylvania, Harrisburg, Pa.

A study of the birth records of 202,501 children born in Pennsylvania in 1942 showed that 1 in 800 had cleft palate. The county distribution did not suggest any significant pattern nor was study of the birth place of the mother fruitful. The highest percentage of cleft palate infants were born to mothers of the 21-25 age group. Of the 250 cleft palate infants 41.6% were primiparous while 38.6% of Pennsylvania babies (1940) were primiparous. Although 5.6% of the children born were negroes only 3.6% of the cleft palate infants were negroes. This group showed 155 cleft palate boys to 88 girls.






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