STATISTICAL ANALYSIS
pain
The evaluated measurements were described according to groups, using means ±
standard deviations, or medians and interquartile ranges, and the values before
expansion were compared between the groups using Student’s t-test or
Mann-Whitney U test. The sex of the patients was described according to groups,
using absolute and relative frequencies; and the association between the groups
was determined using chi-square or Fisher’s exact tests.For the comparison of pain and functional limitation between the groups and
between sexes, the Mann-Whitney U test was used.Spearman’s correlations were calculated between pain and MFIQ and the data
regarding the initial age and midpalatal suture maturation (evaluated by the
method of Angelieri et al.