Dimensions and Growth of the Palate in Infants With Gross Maldevelopment of the Upper Lip and Palate

Abstract

A study of the dimensions and growth of the palate in infants with gross maldevelopment of the lip and palate has previously been reported.1 Included in that report are twenty-eight sets of measurements of twenty\x=req-\ six infants. The present report includes those data and additional measurements, which are given in table 1. The additional measurements were obtained in the manner described in the previous report. The data on the normal palate are the same as in the previous report.The method of analysis is slightly different; that is, regression lines were fitted by the correlation technic instead of by two simultaneous equations, as in the former study.2 In general the results have not been materially changed by including data on twenty-three additional cases. The data for boys and girls are not analyzed separately in this report, since it was demonstrated in the former report that there was no significant sex difference in the relation of measurements of the head to total body length.Regression lines were computed for each of the following measure¬ ments in centimeters on the normal and abnormal palates with crownheel length : height of the palate, length of the alveolar process, actual width of the surface and widest tranverse diameter of the palate. A regression line was also computed for the width of the cleft in the abnormal palates with crown-heel length, in centimeters. All the regres¬ sion lines and a spot diagram of the individual data for each measure¬ ment are given in the figure. The constants for each of the regression lines are given in tables 2 and 3. The results of a comparison of the means and the coefficients of regression are also given in these tables.From the